Patent Publication Number: US-6211795-B1

Title: Receiver having capability of selective storage of received message

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a receiver which receives message information, or a so-called paging receiver (also called a pager). 
     2. Description of the Related Art 
     FIG. 26 is a block diagram showing the electrical configuration of a conventional paging receiver  1 . A signal transmitted from an information service carrier by wireless transmission or the like is received by an antenna  4 , and tuned and detected by an RF unit  5 . The detected signal is demodulated and then supplied to a decoder unit  6 . 
     In the decoder unit  6 , a destination ID code is obtained from a pager format signal of, for example, the POCSAG system, and it is judged whether the ID code coincides with the own ID code stored in an ID-ROM  7  or not. If the codes coincide with each other, message information is obtained from a signal which is subsequently received. Furthermore, an interrupt signal indicative of reception of an effective signal is outputted. 
     In response to the interrupt signal, a control unit  2  activates operation programs which are previously stored in a program memory  3 , such as those for processes of storing and displaying the received message. The received message information is stored in a received message storing unit  8 , and displayed on an LCD (liquid crystal display)  10  which is driven by an LCD driver  9 . 
     When execution of a process such as message deletion is instructed through a key input unit  11 , the process such as deletion is conducted on the received message. A vibration generating unit  12  notifies the user of reception of a message by a vibration, and an alarm/melody sound generating unit  13  acoustically notifies the user of reception. 
     The control unit  2 , the program memory  3 , the decoder unit  6 , the received message storing unit  8 , the LCD driver  9 , the key input unit  11 , the vibration generating unit  12 , and the alarm/melody sound generating unit  13  are electrically connected to each other via a bus line  14 . 
     FIG. 27 shows a message  15  which is transmitted from an information service carrier and received by the paging receiver  1 . FIGS. 28A to  28 C show in stages display screens  16   a  to  16   c  in the case where the message  15  is displayed on the LCD  10 . In the paging receiver  1 , a data indicative of the reception date and time is stored together with the message  15  in the received message storing unit  8 . Therefore, the reception date and time is displayed on the LCD  10  in addition to the message  15 . 
     Since the display capacity of the LCD  10  is limited, the whole of a message is not always displayed. A message number  18 , the message  15 , and the reception date and time  19  are set to be total data to be displayed. A display virtual area  17  which includes these data is assumed. As shown in FIGS. 28A to  28 C, in the actual display screens  16   a  to  16   c  which are smaller than the display virtual area  17 , the data are displayed in a split manner. 
     The display screens  16   a  to  16   c  are switched over by operating a display message downward button  20   a  and a display message upward button  20   b.    
     Another example of a pager of the prior art is disclosed in Japanese Unexamined Patent publication JP-A 7-131840 (1995). The pager is provided with a ROM for classifying received messages in accordance with the contents, so that the stored received messages can be quickly searched. Specifically, messages are classified by the kind of the end of a sentence. For example, a message ended by “KUDASAI (please)” is stored as “Instruction” category, that ended by “SHIMASU (will do)” is stored as “Memo” category, and that ended by “TAI? (would you?)” is stored as “Question” category. 
     In accordance with increasing requests of the user for the variety and amount of information, the paging service is advancing so as to provide a wide variety of and a large amount of information. In a paging receiver, the capacity of a memory for storing received messages is made larger. It is difficult to select a necessary message from such a large amount of received messages. 
     In the pager disclosed in Japanese Unexamined Patent Publication JP-A 7-131840 (1995), all received messages are stored, and it is difficult to select a necessary message as described above, thereby producing problems in that the operability is lowered, and the memory capacity is wastefully used. Moreover, the pager has a further problem in that necessary messages cannot be stored in an increased number. 
     Furthermore, messages are classified only by the kind of the end of a sentence. In order to correctly classify a message, the sender of a message must prepare the message in consideration of this classification system. If such consideration is not sufficiently performed, there arises a disadvantage that the message cannot be classified. Since a ROM is used for classification, the user cannot freely change the classification category. 
     SUMMARY OF THE INVENTION 
     It is an object of the invention to provide a receiver capable of selectively storing a desired message among all received messages. It is another object of the invention to provide a receiver capable of storing among all received messages, a desired message as distinguished from the other messages. 
     The invention provides a receiver which receives a message transmitted from a terminal device and stores the received message in message storing means, comprising: 
     keyword setting means for setting a predetermined keyword; 
     keyword storing means for storing the preset keyword; 
     judging means for, when a message is received, judging whether the received message contains the keyword stored in the keyword storing means or not; and 
     controlling means for storing only a received message which is judged by the judging means to contain the keyword, in the message storing means. 
     According to the invention, among received messages, only a message containing the predetermined keyword is stored. Therefore, only necessary messages can be selectively stored, the operability is improved, and the wasteful use of the memory capacity is reduced. Furthermore, a larger number of necessary received messages can be stored. Since the keyword can be arbitrarily set by the user, the kind of a message to be stored can be freely selected. 
     The invention provides a receiver which receives a message transmitted from a terminal device and stores the received message in message storing means, the receiver comprising: 
     keyword setting means for setting a predetermined keyword; 
     keyword storing means for storing the set keyword; 
     judging means for, when a message is received, judging whether the received message contains the keyword stored in the keyword storing means or not; and 
     controlling means for storing a received message which is judged by the judging means to contain the keyword, in the message storing means as distinguished from other received messages. 
     According to the invention, among received messages, a message containing the predetermined keyword is stored as distinguished from other received messages. Therefore, a received message of high importance can be stored as distinguished from other received messages, thereby improving the operability. Since the keyword can be arbitrarily set by the user, the kind of a message of high importance can be freely selected. 
     The invention is characterized in that: 
     the keyword storing means stores a plurality of keywords, 
     the judging means judges whether the received message contains the keywords stored in the keyword storing means or not, and the controlling means stores only a received message which is judged by the judging means to contain all of the plurality of keywords, in the message storing means. 
     According to the invention, among received messages, only a message containing all of the plurality of predetermined keywords is stored. Therefore, only necessary messages can be selectively stored with the result that the operability is improved and the wasteful use of the memory capacity is reduced. Furthermore, a larger number of necessary received messages can be stored. 
     The invention is characterized in that 
     the keyword storing means stores a plurality of keywords, 
     the judging means judges whether the received message contains the keywords stored in the keyword storing means or not, and 
     the controlling means stores a received message which is judged by the judging means to contain all of the plurality of keywords, in the message storing means as distinguished from other received messages. 
     According to the invention, among received messages, a received message containing all of the plural predetermined keywords is stored as distinguished from other received messages. Therefore, a received message of high importance can be stored as distinguished from other received messages, thereby improving the operability. 
     The invention is characterized in that: 
     the keyword storing means stores a plurality of keywords, 
     the judging means judges whether the received message contains the keywords stored in the keyword storing means or not, and 
     the controlling means stores only a received message which is judged by the judging means to contain at least one of the plurality of keywords, in the message storing means. 
     According to the invention, among received messages, only a message containing at least one of the plurality of predetermined keywords is stored. Therefore, only necessary messages can be selectively stored with the result that the operability is improved and the wasteful use of the memory capacity is reduced. Furthermore, a larger number of necessary received messages can be stored. 
     The invention is characterized in that: 
     the keyword storing means stores a plurality of keywords, 
     the judging means judges whether the received message contains the keywords stored in the keyword storing means or not, and 
     the controlling means stores a received message which is judged by the judging means to contain at least one of the plurality of keywords, in the message storing means as distinguished from other received messages. 
     According to the invention, among received messages, a received message containing at least one of the plurality of predetermined keywords is stored as distinguished from other received messages. Therefore, a received message of high importance can be stored as distinguished from other received messages, thereby improving the operability. 
     The invention is characterized in that: 
     the keyword storing means stores a plurality of keywords which are ordered in accordance with importance, 
     the judging means judges whether the received message contains the keywords stored in the keyword storing means or not, 
     the controlling means stores only a received message which is judged by the judging means to contain at least one of the plurality of keywords, in the message storing means, with classifying the received message according to the keyword, and 
     the message storing means stores: 
     with respect to a first keyword of highest importance, all messages containing the first keyword in an area corresponding to the first keyword, and, 
     with respect to keywords of second and subsequent importance, for a keyword of each importance, a message which is a message other than messages containing keywords of higher importance and contains the keyword of the importance, in areas respectively corresponding to the keywords of second and subsequent importance. 
     According to the invention, among received messages, only a message containing at least one of the plurality of predetermined keywords is stored. Therefore, only necessary messages can be selectively stored with the result that the operability is improved and the wasteful use of the memory capacity is reduced. Furthermore, a larger number of necessary messages can be stored. 
     The plural keywords are ordered in accordance with importance. Received messages are classified for each keyword, and stored according to importance of keyword so as not to be duplicated. As a result, the wasteful use of memory capacity can be reduced. 
     The invention is characterized in that 
     the keyword storing means stores a plurality of keywords which are ordered in accordance with importance, 
     the judging means judges whether the received message contains the keywords stored in the keyword storing means or not, 
     the controlling means classifies a received message which is judged by the judging means to contain at least one of the plurality of keywords, for each keyword, as distinguished from other received messages, and stores the classified received message in the message storing means, and 
     the message storing means stores, 
     with respect to a first keyword of highest importance, all messages containing the first keyword, in an area corresponding to the first keyword, and, 
     with respect to keywords of second and subsequent importance, for a keyword of each importance, a message which is one other than messages containing keywords of higher importance and contains the keyword of the importance, in areas respectively corresponding to the keywords of second and subsequent importance. 
     According to the invention, among received messages, a received message containing at least one of the plurality of predetermined keywords is stored as distinguished from other received messages. Therefore, a received message of high importance can be stored as distinguished from other received messages, thereby improving the operability. 
     The plural keywords are ordered in accordance with importance. Received messages are classified for each keyword, and stored according to importance of keyword so as not to be duplicated. As a result, the wasteful use of memory capacity can be reduced. 
     The invention is characterized in that: 
     the keyword storing means stores a plurality of keywords, 
     the judging means judges whether the received message contains the keywords stored in the keyword storing means or not, 
     the controlling means classifies only received messages which are judged by the judging means to contain at least one of the plurality of keywords, for each keyword, and stores the classified received messages in the message storing means, and 
     the message storing means stores all messages containing a keyword, in an area respectively corresponding to the keyword. 
     According to the invention, among received messages, only messages containing at least one of the plurality of predetermined keywords are stored. Therefore, only necessary messages can be selectively stored with the result that the operability is improved and the wasteful use of memory capacity is reduced. Furthermore, a larger number of necessary received messages can be stored. All messages containing a keyword can be stored in an area respectively corresponding to the keyword. 
     The invention is characterized in that 
     the keyword storing means stores a plurality of keywords, 
     the judging means judges whether the received message contains the keywords stored in the keyword storing means or not, 
     the controlling means classifies only received messages which are judged by the judging means to contain at least one of the plurality of keywords, for each keyword, and stores the classified received messages in the message storing means, and 
     the message storing means stores all messages containing any keyword, in an area corresponding to the contained keyword. 
     According to the invention, among received messages, a message containing at least one of the plurality of predetermined keywords is stored as distinguished from other messages. Therefore, a received message of high importance can be stored as distinguished from other received messages, thereby improving the operability. All messages which contain any keyword can be stored in an area corresponding to the contained keyword. 
     The invention is characterized in that the receiver further comprises message displaying means for displaying a keyword of a message stored in the message storing means, with being highlighted by an attribute which is different from attributes for other words. 
     According to the invention, a received message is displayed on the message displaying means. At this time, the key word of the received message is displayed with being highlighted by an attribute which is different from attributtes for the other words. Therefore, the user can visually recognize the keyword. 
     The invention is characterized in that the receiver further comprises second keyword setting means for designating a character string of the received message, and setting the designated character string as a keyword. 
     According to the invention, a designated character string of a received message is set as a keyword. Therefore, the user can designate a keyword from a received message. 
     The invention is characterized in that the receiver further comprises: 
     keyword displaying means for displaying keywords stored in the keyword storing means; 
     keyword selecting means for selecting a predetermined keyword from the keywords displayed on the keyword displaying means; and 
     message displaying means for selecting a message containing the keyword selected by the keyword selecting means, from the messages stored in the message storing means, and displaying the selected message. 
     According to the invention, preset keywords are displayed on the keyword displaying means, a predetermined keyword is selected, and a message containing the selected keyword is displayed on the message displaying means. Therefore, a message desired by the user can be displayed. 
     The invention is characterized in that the keyword displaying means displays the keywords stored in the keyword storing means, together with information indicative of presence or absence, or the number of unread messages which have not been displayed. 
     According to the invention, when the user selects a keyword, the user can know presence or absence, or the number of unread messages which have not been displayed. 
     The invention is characterized in that the receiver further comprises notifying means for notifying that there is an unread message which has not been displayed on the message displaying means. 
     According to the invention, the user can know that there is an unread message. 
     The invention is characterized in that the notifying means notifies that there is an unread message by a sound, a vibration amplitude or a vibration period which is differently set for each keyword. 
     According to the invention, the user can know that there is an unread message, by a sound, a vibration amplitude, or a vibration period which is differently set for each keyword. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     Other and further objects, features, and advantages of the invention will be more explicit from the following detailed description taken with reference to the drawings wherein: 
     FIG. 1 is a block diagram showing the electrical configuration of a paging receiver  21  of a first embodiment of the invention; 
     FIG. 2 is a view showing a keyword storage table  35   a  of a keyword storing unit  35 ; 
     FIG. 3 is a view showing a temporary message storage table  36   a  of a temporary message storage buffer  36 ; 
     FIG. 4 is a view showing a received message storage table  28   a  of a received message storing unit  28 ; 
     FIG. 5 is a flowchart showing an operation of storing a received message in the paging receiver  21 ; 
     FIG. 6 is a flowchart showing an operation of storing a received message in the paging receiver  21  of a second embodiment of the invention; 
     FIG. 7 is a flowchart showing an operation of storing a received message in the paging receiver  21  of a third embodiment of the invention; 
     FIG. 8 is a flowchart showing an operation of storing a received message in the paging receiver  21  of a fourth embodiment of the invention; 
     FIG. 9 is a view showing a temporary message storage table  36   b  of the temporary message storage buffer  36  of the paging receiver  21  of a fifth embodiment of the invention; 
     FIG. 10 is a view showing a received message storage table  28   b  of the received message storing unit  28  of the paging receiver  21  of the fifth embodiment; 
     FIG. 11 is a flowchart showing an operation of storing a received message in the paging receiver  21  of the fifth embodiment; 
     FIG. 12 is a view showing a received message storage table  28   c  of the received message storing unit  28  of the paging receiver  21  of a sixth embodiment of the invention; 
     FIG. 13 is a flowchart showing an operation of storing a received message in the paging receiver  21  of the sixth embodiment; 
     FIG. 14A is a view showing a manner of displaying a received message  46  stored in the received message storage table  28   a  of the received message storing unit  28  of the paging receiver  21  of a seventh embodiment of the invention, on a displaying unit  30 , and FIG. 14B is a view showing a manner of displaying a received message in a conventional paging receiver; 
     FIG. 15 is a flowchart showing an operation of displaying a received message in the paging receiver  21  of the seventh embodiment; 
     FIGS. 16A to  16 C are views respectively showing display screens  61   a  to  61   c  which illustrate in stages a procedure of designating a keyword in the paging receiver  21  of an eighth embodiment of the invention; 
     FIG. 17 is a flowchart showing an operation of designating a keyword in the paging receiver  21  of the eighth embodiment; 
     FIGS. 18A to  18 C are views respectively showing display screens  65   a  to  65   c  which illustrate in stages a procedure of displaying a received message in the paging receiver  21  of a ninth embodiment of the invention; 
     FIG. 19 is a flowchart showing an operation of displaying a received message in the paging receiver  21  of the ninth embodiment; 
     FIG. 20A is a view showing a display screen  71  which indicates whether there is an unread received message which has not been displayed on the displaying unit  30  of the paging receiver  21  of a tenth embodiment of the invention, or not, and FIG. 20B is a view showing a display screen  75  which indicates the number of unread received messages. 
     FIG. 21 is a flowchart showing an operation of displaying information indicating whether there is an unread received message or not; 
     FIG. 22 is a flowchart showing an operation of displaying information indicative of the number of unread received messages; 
     FIG. 23 is a view showing a display screen  76  which illustrates a method of notifying of reception of a message in the paging receiver  21  of an eleventh embodiment of the invention; 
     FIG. 24 is a view showing a notifying method setting table  81 ; 
     FIG. 25 is a flowchart showing operations of displaying a method of notifying of reception of a message and setting the notifying method; 
     FIG. 26 is a block diagram showing the electrical configuration of a paging receiver  1  of the prior art; 
     FIG. 27 is a view showing a message  15  which is transmitted configuration of a conventional paging receiver  1 ; and 
     FIGS. 28A to  28 C are views showing in stages display screens  16   a  to  16   c  in the case where the message  15  is displayed on an LCD  10 . 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Now referring to the drawings, preferred embodiments of the invention are described below. 
     FIG. 1 is a block diagram showing the electrical configuration of a paging receiver  21  of a first embodiment of the invention. The paging receiver  21  comprises a control unit  22 , a program memory  23 , an antenna  24 , an RF unit  25 , a decoder unit  26 , an ID-ROM  27 , a received message storing unit  28 , an LCD driver  29 , a displaying unit  30 , a key/pen touch input unit  31 , a vibration generating unit  32 , an alarm/melody sound generating unit  33 , a bus line  34 , a keyword storing unit  35 , and a temporary message storage buffer  36 . 
     A signal transmitted from an information service carrier by wireless transmission or the like is received by the antenna  24 , and tuned and detected by the RF unit  25 . The detected signal is demodulated and then supplied to the decoder unit  26 . 
     In the decoder unit  26 , a destination ID code is obtained from a pager format signal of, for example, the POCSAG system, and it is judged whether the ID code coincides with the own ID code stored in the ID-ROM  27  or not. If the codes coincide with each other, message information is obtained from a signal which is subsequently received. Furthermore, an interrupt signal indicative of reception of an effective signal is outputted. 
     In response to the interrupt signal, the control unit  22  which is realized by a CPU (central processing unit) or the like activates operation programs which are previously stored in the program memory  23  which is realized by a ROM (read only memory) or the like. The received message information is temporarily stored in the temporary message storage buffer  36  which is realized by a RAM (random access memory) or the like. A received message is selected by using a keyword which is previously stored in the keyword storing unit  35  which is realized by a flash memory, a RAM, or the like, and then stored in the received message storing unit  28  which is realized by a RAM or the like. 
     The received message can be displayed on the displaying unit  30  which is driven by the display driver  29 . The displaying unit  30  is realized by, for example, an LCD (liquid crystal display). 
     The key/pen touch input unit  31  is realized by, for example, a tablet. Various processes such as deletion of a received message can be instructed by an input through an input pen  38  provided on the key/pen touch input unit  31 . Also an input of a keyword can be executed by such an input. The key/pen touch input unit  31  has a key switch  37  for activating a function of registering a keyword which will be described later. 
     The vibration generating unit  32  notifies the user of reception of a message and the like, by a vibration. The alarm/melody sound generating unit  33  acoustically notifies of the reception. 
     The control unit  22 , the program memory  23 , the decoder unit  26 , the received message storing unit  28 , the display driver  29 , the key/pen touch input unit  31 , the vibration generating unit  32 , the alarm/melody sound generating unit  33 , the keyword storing unit  35 , and the temporary message storage buffer  36  are electrically connected to each other via a bus line  34 . 
     FIG. 2 is a view showing a keyword storage table  35   a  of the keyword storing unit  35 . In the keyword storage table  35   a , management numbers  41  are stored in correspondence with keywords  42 . In the embodiment, notifying method code numbers  43  also are correspondingly stored. 
     A plurality of keywords  42  can be set until the stored contents of the keyword storage table  35   a  reaches the maximum memory capacity of the table. As described above, the user can set the keywords  42  by, for example, inputting character strings through the key/pen touch input unit  31 . Alternatively, keywords may be set by another method. The keywords  42  are configured by words  42   a , and an end symbol  42   b  which is placed behind the words  42   a  and which indicates the end of the keyword list. 
     Each notifying method code number  43  indicates the method by which the user is notified when a message containing the corresponding keyword  42  is received. For example, “1” indicates that reception is notified by a high alarm sound, indicates that reception is notified by a first melody sound, “6” indicates that reception is notified by a vibration, and “0” indicates that reception is not notified. 
     FIG. 3 is a view showing a temporary message storage table  36   a  of the temporary message storage buffer  36 . A received message  44  is temporarily stored in the temporary message storage table  36   a.    
     FIG. 4 is a view showing a received message storage table  28   a  of the received message storing unit  28 . In the received message storage table  28   a , management numbers  45  are stored in correspondence with received messages  46 . 
     A plurality of received messages  46  can be stored in accordance with the limit of the memory capacity of the received message storage table  28   a  and the lengths of the messages. The received messages  46  are configured by messages  46   a , and an end symbol  46   b  which is placed behind the messages  46   a  and which indicates the end of the message list. 
     FIG. 5 is a flowchart showing the operation of storing a received message in the paging receiver  21  of the first embodiment. In step a1, the decoder unit  26  detects the destination ID code from the signal which is received by the antenna  24 , tuned and detected by the RF unit  25 , and then demodulated. In step a2, the control unit  22  judges whether the detected ID code coincides with the own ID code stored in the ID-ROM  27  or not. If the codes coincide with each other, the control advances to step a3. If the codes do not coincide with each other, the control returns to step a1. 
     In step a3, the stored contents of the temporary message storage table  36   a  of the temporary message storage buffer  36  are cleared. In step a4, message information is obtained from a signal which is subsequently received, and the information is temporarily stored in the temporary message storage table  36   a . In step a5, a parameter N is set to be 1. 
     In step a6, the control unit  22  judges whether an N-th keyword stored in the keyword storage table  35   a  is the end symbol  42   b  or not. If the keyword is the end symbol  42   b , the operation of storing the received message is ended. If the keyword is not the end symbol  42   b , the control advances to step a7. 
     In step a7, the control unit  22  judges whether the received message stored in the temporary message storage table  36   a  contains the N-th keyword or not. If the keyword is contained, the control advances to step a8. If the keyword is not contained, the control advances to step a9 to set the parameter N to be N+1 and the control then returns to step a6. 
     In step a8, the received message stored in the temporary message storage table  36   a  is additionally stored in the received message storage table  28   a  of the received message storing unit  28 . Then the operation of storing the received message is ended. 
     As described above, according to the first embodiment, only a received message  46  which is the received message  44  temporarily stored in the temporary message storage table  36   a  of the temporary message storage buffer  36  and which contains at least one of the keywords  42  that are previously set by the user is stored in the received message storage table  28   a  of the received message storing unit  28 . 
     Therefore, a necessary received message can be selectively stored, and cumbersome operations of separating unnecessary messages from necessary ones and deleting the unnecessary messages are not required, thereby improving the operability. Furthermore, the wasteful use of the memory capacity of the received message storing unit  28  is reduced, and hence a larger number of necessary received messages can be stored. Since the keywords  42  can be arbitrarily set by the user, the kind of a message to be stored can be freely selected. 
     The following configuration also is in the scope of the invention. A plurality of keywords are ordered in accordance with importance. With respect to a first keyword of highest importance, all received messages containing the first keyword are stored in a predetermined area of the received message storage table  28   a  corresponding to the first keyword. With respect to keywords of second and subsequent importance, for a keyword of each importance, a received message which does not contain a keyword of higher importance and which contains the keyword of the importance is stored in a predetermined area of the received message storage table  28   a  corresponding to the keywords of second and subsequent importance. 
     Specifically, the case where first to third keywords A, B, and C are set in the order of importance of A&gt;B&gt;C will be considered. With respect to the first keyword A, messages of A, A+B, A+C, and A+B+C are stored in a predetermined area. With respect to the second keyword B, messages of B and B+C are stored in a predetermined area. With respect to the third keyword C, only a message C is stored in a predetermined area. According to this configuration, received messages are stored with being classified according to the keyword, and the messages can be stored in accordance with importance of the keyword, so as not be duplicated. As a result, the wasteful use of the memory capacity can be further reduced. 
     Next, a paging receiver of a second embodiment of the invention will be described. In the paging receiver  21  of the first embodiment, only the received message  46  which contains at least one of the plural preset keywords  42  is stored. By contrast, in the paging receiver of the second embodiment, a received message which contains at least one of the plural preset keywords  42 , and other received messages are stored in respective predetermined areas of the received message storage table  28   a  of the received message storing unit  28 . The block diagram of the embodiment is identical with that of FIG.  1 . Therefore, description of the components is omitted and the components are designated by the same reference numerals. 
     FIG. 6 is a flowchart showing an operation of storing a received message in the paging receiver  21  of the second embodiment. The flowchart is configured by deleting step a8 of the flowchart of FIG.  5  and adding steps a10 and a11. The description of the same steps is omitted. 
     In step a6, the control unit  22  judges whether the N-th keyword stored in the keyword storage table  35   a  is the end symbol  42   b  or not. If the keyword is the end symbol  42   b , the control advances to step a11. If the keyword is not the end symbol  42   b , the control advances to step a7. 
     In step a7, the control unit  22  judges whether the received message stored in the temporary message storage table  36   a  contains the N-th keyword or not. If the keyword is contained, the control advances to step a10. If the keyword is not contained, the control advances to step a9 to set the parameter N to be N+1 and the control then returns to step a6. 
     In step a10, the received message stored in the temporary message storage table  36   a  is additionally stored in the first area of the received message storage table  28   a . Then the operation of storing the received message is ended. 
     In step a11, the received message stored in the temporary message storage table  36   a  is additionally stored in a second area of the received message storage table  28   a  which is different from the first area. Then the operation of storing the received message is ended. 
     As described above, according to the second embodiment, the received message  46  which is the received message  44  temporarily stored in the temporary message storage table  36   a  and which contains at least one of the plural keywords  42  that are previously set by the user, and another received message  46  are stored as distinguished from each other, in the received message storage table  28   a  of the received message storing unit  28 . 
     Therefore, a necessary received message can be stored as distinguished from other received messages, and cumbersome operations of separating unnecessary messages from necessary ones and deleting the unnecessary messages are not required, thereby improving the operability. Since the keywords  42  can be arbitrarily set by the user, the kind of a message to be stored can be freely selected. 
     In the same manner as the first embodiment, also the configuration in which a plurality of keywords are ordered in accordance with importance, received messages are stored with being classified according to the keyword, and messages are stored in accordance with importance of the keyword, so as not to be duplicated, thereby reducing a wasteful use of the memory capacity is in the scope of the invention. 
     Next, a paging receiver of a third embodiment of the invention will be described. In the paging receiver  21  of the first embodiment, only the received message  46  which contains at least one of the plural preset keywords  42  is stored. By contrast, in the paging receiver of the third embodiment, only a received message which contains all the plural preset keywords  42  is stored. The block diagram of the embodiment is identical with that of FIG.  1 . Therefore, description of the components is omitted and the components are designated by the same reference numerals. 
     FIG. 7 is a flowchart showing an operation of storing a received message in the paging receiver  21  of the third embodiment. The flowchart is configured by deleting step a8 of the flowchart of FIG.  5  and adding step a12. The description of the same steps is omitted. 
     In step a6, the control unit  22  judges whether the N-th keyword stored in the keyword storage table  35   a  is the end symbol  42   b  or not. If the keyword is the end symbol  42   b , the control advances to step a12. If the keyword is not the end symbol  42   b , the control advances to step a7. 
     In step a7, the control unit  22  judges whether the received message stored in the temporary message storage table  36   a  contains the N-th keyword or not. If the keyword is contained, the control advances to step a9 to set the parameter N to be N+1 and the control then returns to step a6. If the keyword is not contained, the operation of storing the received message is ended. 
     In step a12, the received message stored in the temporary message storage table  36   a  is additionally stored in the received message storage table  28   a  of the received message storing unit  28 . Then the operation of storing the received message is ended. 
     As described above, according to the third embodiment, only the received message  46  which is the received message  44  temporarily stored in the temporary message storage table  36   a  and which contains all the plural keywords  42  that are previously set by the user is stored in the received message storage table  28   a  of the received message storing unit  28 . Therefore, the embodiment can attain the same effects as those of the first embodiment. 
     Next, a paging receiver of a fourth embodiment of the invention will be described. In the paging receiver  21  of the second embodiment, a received message  46  which contains at least one of the plural preset keywords  42 , and other received messages  46  are stored as distinguished from each other. By contrast, in the paging receiver of the fourth embodiment, a received message which contains all the plural preset keywords  42 , and other received messages are stored in respective predetermined areas of the received message storage table  28   a  of the received message storing unit  28 . The block diagram of the embodiment is identical with that of FIG.  1 . Therefore, description of the components is omitted and the components are designated by the same reference numerals. 
     FIG. 8 is a flowchart showing an operation of storing a received message in the paging receiver  21  of the fourth embodiment. The flowchart is configured by deleting step a8 of the flowchart of FIG.  5  and adding steps a13 and a14. The description of the same steps is omitted. 
     In step a6, the control unit  22  judges whether the N-th keyword stored in the keyword storage table  35   a  is the end symbol  42   b  or not. If the keyword is the end symbol  42   b , the control advances to step a13. If the keyword is not the end symbol  42   b , the control advances to step a7. 
     In step a7, the control unit  22  judges whether the received message stored in the temporary message storage table  36   a  contains the N-th keyword or not. If the keyword is contained, the control advances to step a9 to set the parameter N to be N+1 and the control then returns to step a6. If the keyword is not contained, the control advances to step a14. 
     In step a13, the received message stored in the temporary message storage table  36   a  is additionally stored in a first area of the received message storage table  28   a  of the received message storing unit  28 . Then the operation of storing the received message is ended. 
     In step a14, the received message stored in the temporary message storage table  36   a  is additionally stored in a second area of the received message storage table  28   a  which is different from the first area. Then the operation of storing the received message is ended. 
     As described above, according to the fourth embodiment, the received message  46  which is the received message  44  temporarily stored in the temporary message storage table  36   a  and which contains all the plural keywords  42  that are previously set by the user, and other received messages  46  are stored as distinguished from each other, in the received message storage table  28   a  of the received message storing unit  28 . Therefore, the embodiment can attain the same effects as those of the second embodiment. 
     Next, a paging receiver of a fifth embodiment of the invention will be described. In the paging receiver of the fifth embodiment, only a received message which contains at least one of plural preset keywords is stored, and the received message is stored in correspondence with all the corresponding keywords. In order to reduce the memory capacity, each keyword is stored in the form of a keyword management number. 
     Specifically, in the paging receiver of the fifth embodiment, the temporary message storage buffer  36  has a temporary message storage table  36   b  in place of the temporary message storage table  36   a , and the received message storing unit  28  has a received message storage table  28   b  in place of the received message storage table  28   a . The block diagram of the embodiment is identical with that of FIG.  1 . Therefore, description of the components is omitted and the components are designated by the same reference numerals. 
     FIG. 9 is a view showing the temporary message storage table  36   b  of the temporary message storage buffer  36  of the paging receiver  21  of the fifth embodiment. In the temporary message storage table  36   b , the received message  44  is temporarily stored, and keywords contained in the received message  44  are stored as keyword numbers  47  in a correspondence manner. The keyword numbers  47  correspond to the management numbers  41  of the keyword storage table  35   a  shown in FIG.  2 . 
     FIG. 10 is a view showing the received message storage table  28   b  of the received message storing unit  28  of the paging receiver  21  of the fifth embodiment. In the received message storage table  28   b , the management numbers  45  are stored in correspondence with the received messages  46 . Only the received messages  46  which contain at least one of the plural preset keywords are stored. Furthermore, keywords contained in the respective received messages  46  are stored as corresponding keywords  48  in a correspondence manner. The corresponding keywords  48  also correspond to the management numbers  41  of the keyword storage table  35   a  shown in FIG.  2 . 
     FIG. 11 is a flowchart showing an operation of storing a received message in the paging receiver  21  of the fifth embodiment. The flowchart is configured by deleting step a8 of the flowchart of FIG.  5  and adding steps a15 to a18. The description of the same steps is omitted. 
     In step a4, message information is obtained from a signal which is subsequently received, and the information is temporarily stored in the temporary message storage table  36   a  of the temporary storage buffer  36 . The control then advances to step a15 to clear the stored contents of the keyword numbers  47  of the temporary message storage table  36   b . The control then advances to step a5 to set the parameter N to be 1. 
     In step a6, the control unit  22  judges whether the N-th keyword stored In the keyword storage table  35   a  is the end symbol  42   b  or not. If the keyword is the end symbol  42   b , the control advances to step a17. If the keyword is not the end symbol  42   b , the control advances to step a7. 
     In step a7, the control unit  22  judges whether the received message stored in the temporary message storage table  36   b  contains the N-th keyword or not. If the keyword is contained, the control advances to step a16 in which the number of the N-th keyword is additionally stored in the keyword numbers  47  of the temporary message storage table  36   b . The control then advances to step a9. If the keyword is not contained, the control advances to step a9 without conducting any process. In step a9, the parameter N is set to be N+1, and the control then returns to step a6. 
     In step a17, the control unit  22  judges whether the keyword number  47  is empty or null. If the number is not null, the control advances to step a18 in which the received message stored in the temporary message storage table  36   b  is additionally stored in the received message storage table  28   b  of the received message storing unit  28 . Then the operation of storing the received message is ended. At this time, the keyword number  47  also is additionally stored as a corresponding keyword  48 . If the number is null, the operation of storing the received message is ended without conducting any process. 
     As described above, according to the fifth embodiment, only the received message  46  which contains at least one of the plural keywords  42  that are previously set by the user is additionally stored in the received message storage table  28   b , in correspondence with all the corresponding keywords. 
     Specifically, the case where first to third keywords A, B, and C are set will be considered. With respect to the first keyword A, messages of A, A+B, A+C, and A+B+C are stored in a predetermined area. With respect to the second keyword B, messages of B, B+A, B+C, and B+A+C are stored in a predetermined area. With respect to the third keyword C, messages C, C+A, C+B, and C+A+B are stored in a predetermined area. 
     In the embodiment, a keyword is stored according to the management number of the keyword. Therefore, the wasteful use of the memory capacity can be reduced. 
     Next, a paging receiver of a sixth embodiment of the invention will be described. In the paging receiver  21  of the sixth embodiment, a received message which contains at least one of plural preset keywords is stored as distinguished from other received messages, and a received message which contains at least one of plural preset keywords is stored, in correspondence with all the corresponding keywords. In order to reduce the memory capacity, each keyword is stored in the form of a keyword management number in the same manner as the fifth embodiment. 
     Specifically, in the paging receiver of the sixth embodiment, in the same manner as the fifth embodiment, the temporary message storage buffer  36  has the temporary message storage table  36   b , and the received message storing unit  28  has the received message storage table  28   c . The block diagram of the embodiment is identical with that of FIG.  1 . Therefore, description of the components is omitted and the components are designated by the same reference numerals. 
     FIG. 12 is a view showing the received message storage table  28   c  of the received message storing unit  28  of the paging receiver  21  of the sixth embodiment. In the received message storage table  28   c , the management numbers  45  are stored in correspondence with the received messages  46 . The received messages  46  consist of received messages which contain at least one of the plural preset keywords, and other received messages. These received messages are stored as distinguished from each other. Furthermore, keywords contained in the respective received messages  46  are stored as corresponding keywords  48  in a correspondence manner. The corresponding keywords  48  correspond to the management numbers  41  of the keyword storage table  35   a  shown in FIG.  2 . 
     FIG. 13 is a flowchart showing an operation of storing a received message in the paging receiver  21  of the sixth embodiment. The flowchart is configured by deleting step a17 of the flowchart of FIG.  11 . The description of the same steps is omitted. 
     In step a6, the control unit  22  judges whether the N-th keyword stored in the keyword storage table  35   a  is the end symbol  42   b  or not. If the keyword is the end symbol  42   b , the control advances to step a18. If the keyword is not the end symbol  42   b , the control advances to step a7. 
     In step a18, a received message stored in the temporary message storage table  36   b  of the temporary storage buffer  36  is additionally stored in the received message storage table  28   c  of the received message storing unit  28 . Then the operation of storing the received message is ended. At this time, the keyword number  47  also is additionally stored as a corresponding keyword  48 . 
     As described above, according to the sixth embodiment, the received message  46  which contains at least one of the plural keywords  42  that are previously set by the user, and another received message  46  are stored as distinguished from each other, and, in the same manner as the fifth embodiment, additionally stored in the received message storage table  28   c  in correspondence with all the corresponding keywords  48 . At this time, a keyword is stored according to the management number of the keyword. Therefore, the wasteful use of the memory capacity can be reduced. 
     Next, a paging receiver of a seventh embodiment of the invention will be described. The paging receiver of the seventh embodiment is characterized in the display of a received message. An example in which the embodiment is applied to the paging receiver  21  of the first embodiment will be described. 
     FIG. 14A is a view showing a manner of displaying a received message  46  stored in the received message storage table  28   a  of the received message storing unit  28  of the paging receiver  21  of the seventh embodiment, on the displaying unit  30 , and FIG. 14B is a view showing a manner of displaying a received message in a conventional paging receiver. 
     The whole of data to be displayed consists of a message number  52  corresponding to the management number  45 , a message  53  corresponding to the received message  46 , and the reception date and time (not shown). Since the display capacity of the displaying unit  30  is limited, all the data are not always displayed. Therefore, the data are displayed in a split manner on a display screen  51   a  of the displaying unit  30 . The display screen  51   a  is switched over by operating a display message movement button  54 . When the screen is downward scrolled, the subsequent data can be displayed. 
     As shown in FIG. 14A, in the seventh embodiment, the message  53  is displayed in such a manner that the keywords  53   a  are highlighted or displayed in an attribute which is different from that for the other words  53   b . When a monochromatic display is done, for example, the keywords  53   a  are displayed in a reversed manner. The message number  52  also may be displayed in a reversed manner. 
     As shown in FIG. 14B, in the a conventional paging receiver, the message is displayed in such a manner that the keywords and the other words are not distinguished from each other. In the embodiment, the keywords are highlighted, and hence the user can easily visually recognize the keywords. 
     FIG. 15 is a flowchart showing an operation of displaying a received message in the paging receiver  21  of the seventh embodiment. In step b1, the parameter N is set to be 1. In step b2, it is judged whether the N-th keyword  42  stored in the keyword storage table  35   a  is the end symbol  42   b  or not. If the keyword is the end symbol  42   b , the control advances to step b7 to display the received message on the displaying unit  30 , and the operation is then ended. If the keyword is not the end symbol  42   b , the control advances to step b3. 
     In step b3, it is judged whether the received message  46  stored in the received message storage table  28   a  contains the N-th keyword  42  or not. If the keyword is contained, the control advances to step b4. If the keyword is not contained, the control advances to step b6. In step b4, the character string of the N-th keyword  42  is retrieved from the received message  46 . In step b5, a highlight flag is set for each of the characters of the corresponding portion. In step b6, the parameter N is set to be N+1, and the control then returns to step b2. 
     As described above, according to the seventh embodiment, the received message  53  is displayed on the displaying unit  30 , and at this time the keywords  53   a  of the received message are displayed with being highlighted by an attribute which is different from that for the other words  53   b . Therefore, the user can easily visually recognize the keywords. 
     Next, a paging receiver of an eighth embodiment of the invention will be described. The paging receiver of the eighth embodiment is characterized in that a keyword in a received message can be designated. An example in which the embodiment is applied to the paging receiver  21  of the first embodiment will be described. 
     FIGS. 16A to  16 C are views respectively showing display screens  61   a  to  61   c  which illustrate in stages a procedure of designating a keyword in the paging receiver  21  of the eighth embodiment. 
     On the display screen  61   a , the received message  53  is displayed in succession to the message number  52 . First, the execution of the function of registering a keyword is designated through the key switch  37  of the key/pen touch input unit  31 . As shown in FIG. 16A, the initial character  62   a  of a character string which is to be set as a keyword is designated by using the input pen  38  of the key/pen touch input unit  31 . 
     Next, as shown in FIG. 16B, the last character  62   b  of the character string which is to be set as a keyword is designated by using the input pen  38 . When the character string of a keyword is designated in this way, information indicating that the character string designated as a keyword is registered is displayed as shown in FIG.  16 C. 
     FIG. 17 is a flowchart showing an operation of designating a keyword in the paging receiver  21  of the eighth embodiment. In step c1, the received message  53  is displayed on the displaying unit  30 . In step c2, the execution of the function of registering a keyword is designated through the key switch  37 , and the execution of the function is started. 
     In step c3, the initial character  62   a  of a character string which is to be set as a keyword is designated by using the input pen  38 . In step c4, the designated initial character  62   a  is highlighted or displayed in, for example, a reversed manner. In step c5, the last character  62   b  of the character string which is to be set as a keyword is designated by using the input pen  38 . In step c6, the designated character string ranging from the initial character  62   a  to the last character  62   b  is highlighted. 
     In step c7, the designated character string is additionally stored as a new keyword in the keyword storage table  35   a  of the keyword storing unit  35 . In step c8, information indicating that the registration of a keyword is ended is displayed, and the operation is ended. 
     As described above, according to the eighth embodiment, a designated character string which is designated in the received message  53  is set as a keyword. Therefore, the user can easily set a keyword from a received message. 
     Next, a paging receiver of a ninth embodiment of the invention will be described. The paging receiver of the ninth embodiment is characterized in that preset keywords are displayed on the displaying unit  30 , a predetermined keyword can be selected, and a received message which contains the selected keyword can be displayed. An example in which the embodiment is applied to the paging receiver  21  of the first embodiment will be described. 
     FIGS. 18A to  18 C are views respectively showing display screens  65   a  to  65   c  which illustrate in stages a procedure of displaying a received message in the paging receiver  21  of the ninth embodiment. 
     In the initial state, the display screen  65   a  shown in FIG. 18A is displayed in order to designate the execution of one of various modes which are preset in the paging receiver  21 . In this example, the execution of a keyword reception mode  66  for executing the above-mentioned function is designated by using the input pen  38 . 
     The display screen  65   b  shown in FIG. 18B is then displayed to show a list of keywords. When a predetermined keyword  67  is designated by using the input pen  38 , the display screen  65   c  shown in FIG. 18C indicating a received message which contains the keyword  67  is displayed. 
     FIG. 19 is a flowchart showing an operation of displaying a received message in the paging receiver  21  of the ninth embodiment. In step d1, the initial display screen  65   a  is displayed. In step d2, the keyword reception mode  66  is selected to designate the execution of the mode. In step d3, the keywords  42  stored in the keyword storage table  35   a  of the keyword storing unit  35  are displayed in the form of a list on the display screen  65   b.    
     In step d4, an arbitrary keyword is selected, and the number of the keyword is set to be N. In step d5, a parameter i is set to be 1. In step d6, it is judged whether an i-th received message  46  is the end symbol  46   b  or not. If the message is the end symbol  46   b , the control advances to step d11 to display information indicating that there is no corresponding received message, and the operation is then ended. If the message is not the end symbol  46   b , the control advances to step d7. 
     In step d7, it is judged whether the i-th received message  46  contains the N-th keyword  42  or not. If the message contains the keyword, the control advances to step d8 to display the i-th message  46 , and then to step d9. When the display of the next message is instructed, the control advances to step d10. If the message does not contain the keyword, the control advances to step d10 without conducting any process. In step d10, the parameter i is set to be i+1, and the control then returns to step d6. 
     As described above, according to the ninth embodiment, keywords which are preset by the user are displayed, the predetermined keyword  67  is selected, and the received message(s)  53  which contains the selected keyword  67  is displayed on the displaying unit  30 . Therefore, the received message(s)  53  which is desired by the user can be displayed. 
     Next, a paging receiver of a tenth embodiment of the invention will be described. The paging receiver of the tenth embodiment is characterized in that information indicative of presence or absence of or the number of unread messages which have not been displayed on the displaying unit  30  can be displayed. An example in which the embodiment is applied to the paging receiver  21  of the first embodiment will be described. 
     FIG. 20A is a view showing a display screen  71  which indicates whether there is an unread received message which has not been displayed on the displaying unit  30  of the paging receiver  21  of the tenth embodiment, or not. In the tenth embodiment, in the case where the registered keywords are displayed in the form of a list, when there is an unread message for each of keywords  72 , a predetermined symbol  73  is displayed. 
     FIG. 20B is a view showing a display screen  75  which indicates the number of unread received messages which have not been displayed on the displaying unit  30  of the paging receiver  21  of the tenth embodiment. In the tenth embodiment, in the case where the registered keywords are displayed in the form of a list, also the number  74  of unread received messages is displayed for each of the keywords  72 . 
     FIG. 21 is a flowchart showing an operation of displaying information indicating whether there is an unread received message or not. In step e1, the parameter N is set to be 1. In step e2, It is judged whether the N-th keyword  42  is the end symbol  42   b  or not. If the keyword is the end symbol  42   b , the operation is ended. If the keyword is not the end symbol  42   b , the control advances to step e3. 
     In step e3, the display position is set to be the beginning of the next line. In step e4, the parameter i is set to be 1, and, In step e5, a parameter F is set to be 0. 
     In step e6, it is judged whether the i-th received message  46  is the end symbol  46   b  or not. If the message is the end symbol  46   b , the control advances to step e10. If the message is not the end symbol  46   b , the control advances to step e7. 
     In step e7, it is judged whether the i-th received message  46  contains the N-th keyword  42  or not. If the message contains the keyword, the control advances to step e8, and, if the message does not contain the keyword, the control advances to step e9. 
     In step e8, the parameter F is set to be F+1, and the control then advances to step e9. In step e9, the parameter i is set to be i+1, and the control then returns to step e6. 
     In step e10. It is judged whether the parameter F is 0 or not. If the parameter is 0, the control advances to step e12. If the parameter is not 0, the control advances to step e11. In step e11, the predetermined symbol  73  indicating that there is an unread received message is displayed, and the control then advances to step e13. In step e12, a predetermined symbol indicating that there is not an unread received message is displayed, and the control then advances to step e13. Alternatively, the state that there is not an unread received message may be indicated by displaying no symbol. 
     In step e13, the N-th keyword  42  is displayed. In step e14, the parameter N is set to be N+1, and the control then returns to step e2. 
     FIG. 22 is a flowchart showing an operation of displaying information indicative of the number of unread received messages. The flowchart is configured by replacing step e11 of the flowchart of FIG. 21 with step e15. The description of the same steps is omitted. 
     In step e10, it is judged whether the parameter F is 0 or not. If the parameter is 0, the control advances to step e12. If the parameter is not 0, the control advances to step e15. Instep e15, the number of unread received messages, i.e., the value of the parameter F is displayed, and the control then advances to step e13. 
     As described above, according to the tenth embodiment, information indicating that there is an unread received message(s)  46  which has not been displayed on the displaying unit  30 , or the number the unread received message(s) is displayed. Therefore, the user can know presence or absence of or the number of the unread message(s), together with the received message  46 . 
     Next, a paging receiver of an eleventh embodiment of the invention will be described. The paging receiver of the eleventh embodiment is characterized in that a fact that there is an unread message(s) is notified by a vibration, or acoustic means. An example in which the embodiment is applied to the paging receiver  21  of the first embodiment will be described. 
     FIG. 23 is a view showing a display screen  76  which illustrates a method of notifying of reception of a message in the paging receiver  21  of the eleventh embodiment. In the eleventh embodiment, in the case where the registered keywords are displayed in the form of a list, notifying methods  77  which are performed when messages respectively corresponding to keywords  72  are received are displayed for the keywords  72 . 
     FIG. 24 is a view showing a notifying method setting table  81 . In the notifying method setting table  81 , notifying method code numbers  82  are stored in correspondence with various notifying methods  83  and display character strings  84  indicating notifying methods. The table  81  is previously stored in the program memory  23 . When a keyword is to be registered, the method of notifying of reception of a corresponding message can be set. In this way, the notifying method code numbers  43  of the above-mentioned keyword storage table  35   a  can be set. The notifying method code numbers  43  correspond to the notifying method code numbers  82 . 
     In the embodiment, reception can be notified by either of high and low alarm sounds, first to third melody sounds, and vibration. Any of these method can be designated as the notifying method. Alternatively, designation may be performed so that no notification is done. 
     FIG. 25 is a flowchart showing operations of displaying a method of notifying an unread received message and setting the notifying method. In step f1, the parameter N is set to be 1. In step f2, it is judged whether the N-th keyword  42  is the end symbol  42   b  or not. If the keyword is the end symbol  42   b , the control advances to step f7. If the keyword is not the end symbol  42   b , the control advances to step f3. 
     In step f3, the display position is set to be the beginning of the next line. In step f4, the display character string  84  corresponding to the notifying method code number  82  of the N-th keyword  42  is displayed. In step f5, the N-th keyword  42  is displayed. In step f6, the parameter N is set to be N+1, and the control then returns to step f2. 
     In step f7, it is judged whether one of the keywords  72  is designated or not. If a keyword is designated, the control advances to step f8. If no keyword is designated, the operation is ended. In step f8, the number N of the designated keyword  72  is obtained. In step f9, the notifying method code number  82  of the N-th keyword  72  is incremented by one. If the value is equal to the maximum value of a keyword (in the embodiment,  7 ), the number is set to be 0. In step f10, the display character string  84  corresponding to the notifying method code number  82  of the N-th keyword is displayed, and the control then returns to step f7. 
     As described above, according to the eleventh embodiment, since the method of notifying of reception of a message is displayed, the user can know the notifying method which is to be performed when a corresponding message is received. Furthermore, the user can know that a corresponding message is received, by a sound, a vibration amplitude, or a vibration period which is differently set for each keyword. 
     The seventh to eleventh embodiments have been described as the examples in which the embodiments are applied to the first embodiment. Examples in which the embodiments are applied to any one of the second to sixth embodiments are also In the scope of the invention. 
     One paging receiver may be configured so as to selectively execute the functions of the first to sixth embodiments. 
     The invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description and all changes which come within the meaning and the range of equivalency of the claims are therefore intended to be embraced therein.