Abstract:
An electronic appliance is equipped with: a voice processing unit for executing one voice processing operation selected from plural sorts of voice processing operations; a zapping detecting unit for detecting a zapping condition; and a process switching unit for switching the presently executed voice processing operation to a different voice processing operation in response to a detection result for indicating whether or not the zapping condition is detected. When the zapping detecting unit detects the zapping condition, the process switching unit controls the voice processing unit to switch the presently executed voice processing operation to a voice processing operation which does not contain a sound quality improving function.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    The present invention is related to an electronic appliance whose operation mode is switched to a proper operation mode in response to situations. 
         [0003]    2. Description of the Related Art 
         [0004]    As one of Japanese terrestrial digital broadcasting services (ISDB-T), a so-called “1seg” service has been provided with respect to portable telephones and mobile terminals. In the case that power supplies of broadcast receiving terminals capable of receiving television broadcast programs based upon the above-described “1seg” service are constructed of batteries, it is desirable that power consumption thereof is low in view of drive times of the broadcast receiving terminals. To this end, two voice reproducing modes, namely a normal mode and a power saving mode have been prepared for these broadcast receiving terminals. In the normal mode, the broadcast receiving terminals execute a function (will be referred to as “acoustic additional function” hereinafter) in order to realize superior sound qualities. In the power saving mode, since the broadcast receiving terminals do not execute the acoustic additional function, power consumption thereof is low, although sound qualities are deteriorated, as compared with those of the above-described normal mode. 
         [0005]    In the above-described broadcast receiving terminals, in order to switch the voice reproducing modes, users are required to operate these broadcast receiving terminals. As a result, even under such a situation that the power saving modes are properly available, if the users do not execute the switching operation from the normal mode to the power saving mode, then the voice reproducing mode of the broadcast receiving terminals is still kept in the normal mode. As a consequence, it is desirable that even when voice reproducing modes of broadcast receiving terminals are not operated by users, the voice reproducing modes can be automatically switched. 
       SUMMARY OF THE INVENTION 
       [0006]    An object of the present invention is to provide an electronic appliance capable of switching a voice reproducing mode thereof to a proper mode in response to situations even when the power mode switching operation is not executed by a user. 
         [0007]    The present invention is to provide an electronic appliance comprising: a voice processing unit for executing one voice processing operation selected from plural sorts of voice processing operations; a zapping detecting unit for detecting a zapping condition; and a process switching unit for switching the presently executed voice processing operation to a different voice processing operation in response to a detection result for indicating whether or not the zapping condition is detected; in which when the zapping detecting unit detects the zapping condition, the process switching unit controls the voice processing unit to switch the presently executed voice processing operation to a voice processing operation which does not contain a sound quality improving function. 
         [0008]    The present invention is to provide an electronic appliance comprising: an image processing unit for executing one image processing operation selected from plural sorts of image processing operations; a zapping detecting unit for detecting a zapping condition; and a process switching unit for switching the presently executed image processing operation to a different image processing operation in response to a detection result for indicating whether or not the zapping condition is detected; in which when the zapping detecting unit detects the zapping condition, the process switching unit controls the image processing unit to switch the presently executed image processing operation to an image processing operation which does not contain an image quality improving function. 
         [0009]    The present invention is to provide an electronic appliance comprising: a voice processing unit for executing one voice processing operation selected from plural sorts of voice processing operations; a judging unit for judging whether a signal transmission path defined from the voice processing unit up to a voice output unit corresponds to a wired signal transmission path, or a wireless signal transmission path; and a process switching unit for switching the presently executed voice processing operation to a different voice processing operation in response to a judgement result of the signal transmission path; in which when the signal transmission path is the wired signal transmission path, the process switching unit controls the voice processing unit to switch the presently executed voice processing operation to a voice processing operation which contains a sound quality improving function, whereas when the signal transmission path is the wireless signal transmission path, the process switching unit controls the voice processing unit to switch the presently executed voice processing operation to a voice processing operation which does not contain the sound quality improving function. 
         [0010]    The present invention is to provide an electronic appliance comprising: a voice processing unit for executing one voice processing operation selected from plural sorts of voice processing operations; an information acquiring unit for acquiring genre information about contents which are processed by the voice processing unit; and a process switching unit for switching the presently executed voice processing operation to a different voice processing operation in response to the genre information acquired by the information processing unit; in which the plural sorts of voice processing operations include a voice processing operation which contains a sound quality improving function, and another voice processing operation which does not contain the sound quality improving function. 
         [0011]    The present invention is to provide an electronic appliance comprising: a voice processing unit for executing one voice processing operation selected from plural sorts of voice processing operations; a sound volume measuring unit for measuring a surrounding sound volume; and a process switching unit for switching the presently executed voice processing operation in response to information related to the surrounding sound volume measured by the sound volume measuring unit; in which when the measured surrounding sound volume is lower than a reference value, the process switching unit controls the voice processing unit to switch the presently executed voice processing operation to a voice processing operation which contains a sound quality improving function. 
         [0012]    The present invention is to provide an electronic appliance comprising: an image processing unit for executing one image processing operation selected from plural sorts of image processing operations; a luminance detecting unit for detecting surrounding luminance; and a process switching unit for switching the presently executed image processing operation to a different image processing operation in response to information related to the surrounding luminance detected by the luminance detecting unit; in which when the detected surrounding luminance is lower than a reference value, the process switching unit controls the image processing unit to switch the presently executed image processing operation to an image processing operation which contains an image quality improving function. 
         [0013]    The present invention is to provide an electronic appliance comprising: a key operating unit; an image processing unit for executing one image processing operation selected from plural sorts of image processing operations; a key operation detecting unit for detecting a time interval of key input operations with respect to the key operating unit; and a process switching unit for switching the presently executed image processing operation to a different image processing operation in response to the time interval of the key input operations detected by the key operation detecting unit; in which when the detected time interval of the key input operations is longer than, or equal to a reference value, the process switching unit controls the image processing unit to switch the presently executed image processing operation to an image processing operation which contains an image quality improving function. 
         [0014]    The present invention is to provide an electronic appliance comprising: two housings which can be opened and closed with each other; an image processing unit for executing one image processing operation selected from plural sorts of image processing operations; a condition detecting unit for detecting open/close conditions of the two housings; and a process switching unit for switching the presently executed image processing operation to a different image processing operation in response to a condition detected by the condition detecting unit; in which when the two housings are under open condition, the process switching unit controls the image processing unit to switch the presently executed image processing operation to an image processing operation which contains an image quality improving function. 
         [0015]    The present invention is to provide an electronic appliance comprising: a voice processing unit for executing one voice processing operation selected from plural sorts of voice processing operations; a data broadcast processing unit for executing a processing operation in order to display a data broadcasting content; and a process switching unit for switching the presently executed voice process operation to a different voice process operation in response to a situation for indicating whether or not the data broadcast processing unit performs the digital broadcasting content display processing operation; in which when the data broadcast processing unit does not execute the digital broadcasting content display processing operation, the process switching unit controls the voice processing unit to switch the presently executed voice processing operation to a voice processing operation which contains a sound quality improving function. 
         [0016]    The present invention is to provide an electronic appliance comprising: a receiving unit for receiving a wireless signal; a reception strength detecting unit for detecting an electromagnetic wave reception strength of a wireless signal received by the receiving unit; an image processing unit for executing an image processing operation; a voice processing unit for executing a voice processing operation; and a process switching unit for switching the image processing operation and the sound processing operation in response to an electromagnetic wave reception strength detected by the reception strength detecting unit; in which when the electromagnetic wave reception strength detected by the reception strength detecting unit is larger than, or equal to a reference value, the process switching unit controls both the image processing unit and the voice processing unit so as to execute both the image processing operation and the voice processing operation. 
         [0017]    The present invention is to provide an electronic appliance comprising: an image processing unit for executing one image processing operation selected from plural sorts of image processing operations; a noise detecting unit for detecting a noise strength indicative of a situation of an error occurred when a decoding operation is carried out by the image processing unit; and a process switching unit for switching the presently executed image, process operation to a different image processing operation in response to a noise strength detected by the noise detecting unit; in which when the noise strength detected by the noise detecting unit is smaller than a reference value, the process switching unit controls the image processing unit to switch the presently executed image processing operation to an image processing operation which contains an image quality improving function. 
         [0018]    The present invention is to provide an electronic appliance comprising: a voice communication processing unit for performing a voice communication processing operation by utilizing a wireless signal; a voice processing unit for executing one voice processing operation selected from plural sorts of voice processing operations; and a process switching unit for switching the presently executed voice processing operation to a different voice processing operation in response to a situation for indicating whether or not the voice communication processing unit performs the voice communication processing operation; in which when the voice communication processing unit does not perform the voice communication processing operation, the process switching unit controls the voice processing unit to switch the presently executed voice processing operation to a voice processing operation which contains a sound quality improving function. 
         [0019]    The present invention is to provide a process switching program for causing a computer to function as the respective units comprised in the above-described electronic appliance. 
         [0020]    In accordance with the electronic appliance and the process switching programs, related to the present invention, the optimum power modes can be used in response to the situations, while the power mode switching instructions are not issued from the users. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0021]      FIG. 1  is a block diagram for showing a broadcast receiving terminal of a first embodiment mode of the present invention. 
           [0022]      FIG. 2  is a block diagram for indicating an internal arrangement of the broadcast receiving terminal of the first embodiment mode. 
           [0023]      FIG. 3  is a block diagram for representing a voice processing unit employed in the broadcast receiving terminal of the first embodiment mode. 
           [0024]      FIG. 4  is a block diagram for showing an image processing unit employed in the broadcast receiving terminal of the first embodiment mode. 
           [0025]      FIG. 5  is a flow chart for describing operations of the broadcast receiving terminal of the first embodiment mode. 
           [0026]      FIG. 6  is a flow chart for describing operations of the broadcast receiving terminal of the first embodiment mode. 
           [0027]      FIG. 7  is a block diagram for showing a broadcast receiving terminal of a second embodiment mode according to the present invention. 
           [0028]      FIG. 8  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the second embodiment mode. 
           [0029]      FIG. 9  is a flow chart for describing operations of the broadcast receiving terminal of the second embodiment mode. 
           [0030]      FIG. 10  is a block diagram for showing a broadcast receiving terminal of a third embodiment mode according to the present invention. 
           [0031]      FIG. 11  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the third embodiment mode. 
           [0032]      FIG. 12  is a flow chart for describing operations of the broadcast receiving terminal of the third embodiment mode. 
           [0033]      FIG. 13  is a block diagram for showing a broadcast receiving terminal of a fourth embodiment mode according to the present invention. 
           [0034]      FIG. 14  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the fourth embodiment mode. 
           [0035]      FIG. 15  is a flow chart for describing operations of the broadcast receiving terminal of the fourth embodiment mode. 
           [0036]      FIG. 16  is a block diagram for showing a broadcast receiving terminal of a fifth embodiment mode according to the present invention. 
           [0037]      FIG. 17  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the fifth embodiment mode. 
           [0038]      FIG. 18  is a flow chart for describing operations of the broadcast receiving terminal of the fifth embodiment mode. 
           [0039]      FIG. 19  is a block diagram for showing a broadcast receiving terminal of a sixth embodiment mode according to the present invention. 
           [0040]      FIG. 20  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the sixth embodiment mode. 
           [0041]      FIG. 21  is a flow chart for describing operations of the broadcast receiving terminal of the sixth embodiment mode. 
           [0042]      FIG. 22  is a block diagram for showing a broadcast receiving terminal of a seventh embodiment mode according to the present invention. 
           [0043]      FIG. 23  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the seventh embodiment mode. 
           [0044]      FIG. 24  is a flow chart for describing operations of the broadcast receiving terminal of the seventh embodiment mode. 
           [0045]      FIG. 25  is a block diagram for showing a broadcast receiving terminal of an eighth embodiment mode according to the present invention. 
           [0046]      FIG. 26  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the eighth embodiment mode. 
           [0047]      FIG. 27  is a flow chart for describing operations of the broadcast receiving terminal of the eighth embodiment mode. 
           [0048]      FIG. 28  is a block diagram for showing a broadcast receiving terminal of a ninth embodiment mode according to the present invention. 
           [0049]      FIG. 29  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the ninth embodiment mode. 
           [0050]      FIG. 30  is a flow chart for describing operations of the broadcast receiving terminal of the ninth embodiment mode. 
           [0051]      FIG. 31  is a flow chart for describing operations of a broadcast receiving terminal of a tenth embodiment mode. 
           [0052]      FIG. 32  is a block diagram for showing a broadcast receiving terminal of an eleventh embodiment mode according to the present invention. 
           [0053]      FIG. 33  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the eleventh embodiment mode. 
           [0054]      FIG. 34  is a flow chart for describing operations of the broadcast receiving terminal of the eleventh embodiment mode. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0055]    Referring now to drawings, a description is made of embodiment modes of the present invention. 
       First Embodiment Mode 
       [0056]      FIG. 1  is a block diagram for showing a broadcast receiving terminal according to a first embodiment mode of the present invention. As represented in  FIG. 1 , the broadcast receiving terminal of the first embodiment mode is equipped with an image display unit  301 , an operation unit  302  of a channel selecting operation, and a speaker  303 .  FIG. 2  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the first embodiment mode. As represented in  FIG. 2 , the broadcast receiving terminal of the first embodiment mode is equipped with an antenna  401 , a receiving unit  402 , a separating unit  403 , a voice processing unit  404 , a speaker  405 , an image processing unit  406 , an image display unit  407 , a control unit  409 , and the operation unit  302 . 
         [0057]      FIG. 3  is a block diagram for showing an internal arrangement of the voice processing unit  404  employed in the broadcast receiving terminal of the first embodiment mode. With respect to voice data entered to the voice processing unit  404 , a decoding process operation is carried out in a decoding process unit  101 . Thereafter, a switching operation is carried out in a sound quality switching unit  131  as to whether or not a process operation by a higher sound quality realizing process unit  111  is executed. In the case that the process operation by the higher sound quality realizing process unit  111  is not carried out, power consumption of the broadcast receiving terminal can be suppressed, as compared with power consumption made in such a case that the process operation by the higher sound quality realizing process unit  111  is not executed. Thereafter, the processed voice data is converted into analog data by a D/A converting unit  121 . 
         [0058]      FIG. 4  is a block diagram for showing an internal arrangement of the image processing unit  406  employed in the broadcast receiving terminal of the first embodiment mode. With respect to image data entered to the image processing unit  406 , a decoding process operation is carried out in a decoding process unit  201 . Thereafter, a switching operation is carried out in an image quality switching unit  231  as to whether or not a process operation by a higher image quality realizing process unit  211  is executed. In the case that the process operation by the higher image quality realizing process unit  211  is not carried out, power consumption of the broadcast receiving terminal can be suppressed, as compared with power consumption made in such a case that the process operation by the higher image quality realizing process unit  211  is not executed. Thereafter, the processed image data is converted into analog data by a D/A converting unit  221 . 
         [0059]      FIG. 5  is a flow chart for describing operations of the broadcast receiving terminal of the first embodiment mode. As shown in  FIG. 5 , the control unit  409  detects a time interval of channel switching operations performed by employing the operation unit  302  (step  5 -S 101 ), and then compares the detected channel switching time interval with a reference value (step  5 -S 111 ). In the case that the channel switching time interval is shorter than the reference value, the control unit  409  judges that this condition corresponds to a so-called “zapping condition”, and thus, turns OFF a sound quality improving function (step  5 -S 121 ). On the other hand, in the case that the channel switching time interval is longer than, or equal to the reference value, the control unit  409  judges that this condition does not correspond to the above-described “zapping condition”, and thus, turns ON the sound quality improving function (step  5 -S 122 ). It should be understood that the above-explained process operations executed by the control unit  409  may be alternatively realized by employing software. 
         [0060]      FIG. 6  is a flow chart for describing operations of the broadcast receiving terminal of the first embodiment mode. As shown in  FIG. 6 , the control unit  409  detects a time interval of channel switching operations performed by employing the operation unit  302  (step  6 -S 101 ), and then, compares the detected channel switching time interval with a reference value (step  6 -S 1 ). In the case that the channel switching time interval is shorter than the reference value, the control unit  409  judges that this condition corresponds to the “zapping condition”, and thus, turns OFF: an image quality improving function (step  6 -S 124 ). On the other hand, in the case that the channel switching time interval is longer than, or equal to the reference value, the control unit  409  judges that this condition does not correspond to the above-described “zapping condition”, and thus, turns ON the image quality improving function (step  6 -S 122 ). It should also be understood that the above-explained process operations executed by the control unit  409  may be alternatively realized by employing software. 
         [0061]    It should also be understood that a “zapping” operation implies that a tuning operation of broadcasting programs, or a selecting operation of recorded contents is carried out in a restless manner. In other words, such an operation condition that channels are switched in a continuous manner within a short time, or contents are switched in a continuous manner within a short time corresponds to a so termed “zapping condition.” 
       Second Embodiment Mode 
       [0062]      FIG. 7  is a block diagram for indicating a broadcast receiving terminal according to a second embodiment mode of the present invention. As indicated in  FIG. 7 , the broadcast receiving terminal of the second embodiment mode is equipped with an image display unit  701 , a switch  702 , a speaker  703 , and a wireless type headphone  704 .  FIG. 8  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the second embodiment mode. As shown in  FIG. 8 , the broadcast receiving terminal of the second embodiment mode is equipped with an antenna  801 , a receiving unit  802 , a separating unit  803 , a voice processing unit  804 , a wired/wireless transmission switching unit  805 , a wireless transmitting unit  806 , a wireless receiving unit  807 , a speaker  808 , another speaker  809 , and a control unit  810 . 
         [0063]      FIG. 9  is a flow chart for describing operations of the broadcast receiving terminal of the second embodiment mode. As shown in  FIG. 9 , the control unit  810  judges whether or not a signal transmission path defined from the voice processing unit  804  up to the speaker  808 , or  809  based upon a status of the wired/wireless transmission switching unit  805  (step  9 -S 111 ). In the case that the signal transmission path is the wireless transmission path, the control unit  810  turns OFF the sound quality improving function (step  9 -S 121 ). On the other hand, in the case that the signal transmission path is the wired transmission path, the control unit  810  turns ON the sound quality improving function (step  9 -S 122 ). It should also be understood that the above-explained process operations executed by the control unit  810  may be alternatively realized by employing software. 
       Third Embodiment Mode 
       [0064]      FIG. 10  is a block diagram for indicating a broadcast receiving terminal according to a third embodiment mode of the present invention. As indicated in  FIG. 10 , the broadcast receiving terminal of the third embodiment mode is equipped with an image display unit  1001 , a switch  1002 , and a speaker  1003 .  FIG. 11  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the third embodiment mode. As shown in FIG.  11 , the broadcast receiving terminal of the third embodiment mode is equipped with an antenna  1101 , a receiving unit  1102 , a separating unit  1103 , a voice processing unit  1104 , a speaker  1105 , a program information acquiring unit  1106 , and a control unit  1107 . 
         [0065]      FIG. 12  is a flow chart for describing operations of the broadcast receiving terminal of the third embodiment mode. As shown in  FIG. 12 , the control unit  1107  acquires program information (step  12 -S 101 ), and then, switches the voice processing operations in response to genre of a program which is indicated by this acquired program information (step  12 -S 111 ). In such a genre case that the sound quality thereof is not important, the control unit  1107  turns OFF the sound quality improving function (step  12 -S 121 ). On the other hand, in such a genre case that the sound quality thereof is important, the control unit  1107  turns ON the sound quality improving function (step  12 -S 122 ). It should also be understood that the above-explained process operations executed by the control unit  1107  may be alternatively realized by employing—software. 
       Fourth Embodiment Mode 
       [0066]      FIG. 13  is a block diagram for indicating a broadcast receiving terminal according to a fourth embodiment mode of the present invention. As indicated in  FIG. 13 , the broadcast receiving terminal of the fourth embodiment mode is equipped with an image display unit  1301 , a switch  1302 , a speaker  1303 , and a microphone  1304 .  FIG. 14  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the fourth embodiment mode. As shown in  FIG. 14 , the broadcast receiving terminal of the fourth embodiment mode is equipped with an antenna  1401 , a receiving unit  1402 , a voice processing unit  1403 , a speaker  1104 , a microphone  1405 , a sound volume measuring unit  1406 , and a control unit  1407 . 
         [0067]      FIG. 15  is a flow chart for describing operations of the broadcast receiving terminal of the fourth embodiment mode. As shown in  FIG. 15 , the control unit  1407  acquires information related to a surrounding sound volume measured by the sound volume measuring unit  1406  (step  15 -S 101 ), and then switches voice processing operations in response to the acquired surrounding sound volume (step  15 -S 111 ). In the case that the surrounding sound volume is longer than, or equal to a reference value, the control unit  1107  turns OFF a higher sound volume function (step  15 -S 121 ). On the other hand, in the case that the surrounding sound volume is small than the reference value, the control unit  1107  turns ON the higher sound volume function (step  15 -S 122 ). It should also be understood that the above-explained process operations executed by the control unit  1407  may be alternatively realized by employing software. 
       Fifth Embodiment Mode 
       [0068]      FIG. 16  is a block diagram for indicating a broadcast receiving terminal according to a fifth embodiment mode of the present invention. As indicated in  FIG. 16 , the broadcast receiving terminal of the fifth embodiment mode is equipped with an image display unit  1601 , a switch  1602 , a speaker  1603 , and an optical sensor  1604 .  FIG. 17  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the fifth embodiment mode. As shown in  FIG. 17 , the broadcast receiving terminal of the fifth embodiment mode is equipped with an antenna  1701 , a receiving unit  1702 , a separating unit  1703 , a picture processing unit  1704 , an image display unit  1705 , an optical sensor  1706 , an illuminance measuring unit  1707 , and a control unit  1708 . 
         [0069]      FIG. 18  is a flow chart for describing operations of the broadcast receiving terminal of the fifth embodiment mode. As shown in  FIG. 18 , the control unit  1708  acquires information related to surrounding illuminance detected by the optical sensor  1604  (step  18 -S 101 ), and then switches image filtering process operations in response to the acquired surrounding illuminance (step  18 -S 111 ). In the case that the surrounding illuminance is higher than, or equal to a reference value, the control unit  1708  turns OFF the image filtering process operation (step  18 -S 122 ). On the other hand, in the case that the surrounding illuminance is lower than the reference value, the control unit  1708  turns ON the image filtering process operation (step  18 -S 121 ). It should also be understood that the above-explained process operations executed by the control unit  1708  may be alternatively realized by employing software. 
       Sixth Embodiment Mode 
       [0070]      FIG. 19  is a block diagram for showing a broadcast receiving terminal according to a sixth embodiment mode of the present invention. As represented in  FIG. 19 , the broadcast receiving terminal of the sixth embodiment mode is equipped with an image display unit  1901 , and a key  1902 .  FIG. 20  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the sixth embodiment mode. As represented in  FIG. 20 , the broadcast receiving terminal of the sixth embodiment mode is equipped with an antenna  2001 , a receiving unit  2002 , a separating unit  2003 , an image processing unit  2004 , an image display unit  2005 , a control unit  2007 , and the key  1902 . 
         [0071]      FIG. 21  is a flow chart for describing operations of the broadcast receiving terminal of the sixth embodiment mode. As shown in  FIG. 21 , the control unit  2007  detects a time interval of inputting operations performed by operating the key  1902  (step  21 -S 101 ), and then compares the detected key input time interval with a reference value (step  21 -S 111 ). In the case that the key input time interval is longer than, or equal to the reference value, the control unit  2007  turns ON the higher image quality function (step  21 -S 121 ). On the other hand, in the case that the key input time interval is shorter than the reference value, the control unit  2007  turns OFF the higher image quality function (step  21 -S 122 ). It should also be understood that the above-explained process operations executed by the control unit  2007  may be alternatively realized by employing software. 
       Seventh Embodiment Mode 
       [0072]      FIG. 22  is a block diagram for indicating a broadcast receiving terminal according to a seventh embodiment mode of the present invention. As indicated in  FIG. 22 , the broadcast receiving terminal of the seventh embodiment mode is equipped with a first housing  2201 , a second housing  2202 , a hinge portion  2203  which joins the first housing  2201  to the second housing  2202 , an image display unit  2204 , and a key  2205 .  FIG. 23  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the seventh embodiment mode. As shown in  FIG. 23 , the broadcast receiving terminal of the seventh embodiment mode is equipped with an antenna  2301 , a receiving unit  2302 , an image processing unit  2303 , an image display unit  2304 , and a control unit  2305   
         [0073]      FIG. 24  is a flow chart for describing operations of the broadcast receiving terminal of the seventh embodiment mode. As shown in  FIG. 24 , the control unit  2305  detects open/close conditions of the first/second housings  2201 / 2202  (step  24 -S 101 ), and then switches image processing operations in response to the open/close conditions of the first/second housings  2201 / 2202  (step  24 -S 111 ). In the case that the first/second housings  2201 / 2202  are opened, the control unit  2305  turns ON the higher image quality function (step  24 -S 121 ). On the other hand, in the case that the first/second housings  2201 / 2202  are closed, the control unit  2305  turns OFF the higher image quality function (step  24 -S 122 ). It should also be understood that the above-explained process operations executed by the control unit  2305  may be alternatively realized by employing software. 
       Eighth Embodiment Mode 
       [0074]      FIG. 25  is a block diagram for showing a broadcast receiving terminal according to an eighth embodiment mode of the present invention. As represented in  FIG. 25 , the broadcast receiving terminal of the eighth embodiment mode is equipped with an image display unit  2501 , a key  2502 , and a speaker  2503 .  FIG. 26  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the eighth embodiment mode. As represented in  FIG. 26 , the broadcast receiving terminal of the eighth embodiment mode is equipped with an antenna  2601 , a receiving unit  2602 , an image processing unit  2603 , a data broadcast processing unit  2604 , a display control unit  2605 , an image display unit  2606 , a voice processing unit  2607 , a speaker  2608 , and a control unit  2609 . 
         [0075]      FIG. 27  is a flow chart for describing operations of the broadcast receiving terminal of the eighth embodiment mode. As shown in  FIG. 27 , the control unit  2609  switches image processing operations in response to browsing of data broadcast (step  27 -S 111 ). In such a case that the data broadcast is not browsed, the control unit  2609  turns ON the higher sound quality function, and also, executes the decoding process operation of the image data (step  27 -S 121 ). On the other hand, in such a case that the data broadcast is being browsed, the control unit  2609  turns OFF the higher sound quality function, and also, stops the decoding process operation of the image data (step  27 -S 122 ). It should also be understood that the above-explained process operations executed by the control unit  2609  may be alternatively realized by employing-software. 
       Ninth Embodiment Mode 
       [0076]      FIG. 28  is a block diagram for indicating a broadcast receiving terminal according to a ninth embodiment mode of the present invention. As indicated in  FIG. 28 , the broadcast receiving terminal of the ninth embodiment mode is equipped with an image display unit  2801 , a key  2802 , and a speaker  2803 .  FIG. 29  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the ninth embodiment mode. As shown in  FIG. 29 , the broadcast receiving terminal of the ninth embodiment mode is equipped with an antenna  2901 , a receiving unit  2902 , an image processing unit  2904 , an image display unit  2905 , a separating unit  2906 , a voice processing unit  2907 , a speaker  2908 , and a control unit  2909 . 
         [0077]      FIG. 30  is a flow chart for describing operations of the broadcast receiving terminal of the ninth embodiment mode. As shown in  FIG. 30 , the control unit  2909  detects an electromagnetic wave reception signal strength of a wireless signal which is received by the receiving unit  2902  (step  30 -S 101 ), and then, turns ON, or OFF both an image processing operation and a voice processing operation (both processing operations will be combined to be referred as “data decoding process operation” hereinafter) in response to this detected electromagnetic wave reception signal strength (step  30 -S 111 ). In the case that the electromagnetic reception signal strength is larger than, or equal to a reference value, the control unit  2909  executes the data decoding process operation (step  30 -S 121 ). On the other hand, in the case that the electromagnetic reception signal strength is smaller than the reference value, the control unit  2909  stops the data decoding process operation (step  30 -S 122 ). It should also be understood that the above-explained process operations executed by the control unit  2909  may be alternatively realized by employing software. 
       Tenth Embodiment Mode 
       [0078]    A broadcast receiving terminal according to a tenth embodiment mode of the present invention has the same arrangement as that of the broadcast receiving terminal indicated in  FIG. 28 , or  FIG. 29 .  FIG. 31  is a flow chart for describing operations of the broadcast receiving terminal of the tenth embodiment mode. As shown in  FIG. 31 , the control unit  2909  detects a situation of an error during decoding process operation, namely detects a noise strength (step  31 -S 101 ), and then switches the image process operations in response to this detected noise strength (step  31 -S 111 ). In the case that the noise strength is higher than, or equal to a reference value, the control unit  2909  turns OFF the higher image quality function (step  31 -S 122 ). On the other hand, in the case that the noise strength is lower than the reference value, the control unit  2909  turns ON the higher image quality function (step  31 -S 121 ). It should also be understood that the above-explained process operations executed by the control unit  2909  may be alternatively realized by employing software. 
       Eleventh Embodiment Mode 
       [0079]      FIG. 32  is a block diagram for showing a broadcast receiving terminal according to an eleventh embodiment mode of the present invention. As represented in  FIG. 32  the broadcast receiving terminal of the eleventh embodiment mode is equipped with an image display unit  3201 , a key  3202 , a speaker  3203 , and a microphone  3204 .  FIG. 33  is a block diagram for representing an internal arrangement of the broadcast receiving terminal of the eleventh embodiment mode. As represented in  FIG. 33 , the broadcast receiving terminal of the eleventh embodiment mode is equipped with an antenna  3301 , a receiving unit  3302 , a separating unit  3303 , a voice processing unit  3306 , a speaker  3307 , an image processing unit  3304 , an image display unit  3305 , a control unit  3308 , a microphone  3309 , a voice communication processing unit  3310 , and a telephone communication-purpose antenna  3311 . 
         [0080]      FIG. 34  is a flow chart for describing operations of the broadcast receiving terminal of the eleventh embodiment mode. As shown in  FIG. 34 , the control unit  3408  detects a telephone communication condition (step  34 -S 101 ), and then switches voice processing operations in response to the detected telephone communication condition (step  34 -S 111 ). In such a case that the user is under telephone communication, the control unit  3309  turns OFF the higher sound quality function (step  34 -S 121 ). On the other hand, in such a case that the user is not under telephone communication, the control unit  3309  turns ON the higher sound quality function (step  34 -S 122 ). It should also be understood that the above-explained process operations executed by the control unit  3408  may be alternatively realized by employing software. 
         [0081]    As previously described, in accordance with the above-explained broadcast receiving terminals of the first embodiment mode through the eleventh embodiment mode, such a condition is detected under which the execution effects as to the higher sound quality process operations and the higher image quality process operations are low, and thus, the useless higher sound quality process operation and the useless high image quality process operation can be reduced. As a consequence, even when the switching instruction is not issued from the user, the broadcast receiving terminals can select the optimum operation mode in response to the situations in order that the power consumption thereof can be suppressed. 
         [0082]    It should further be understood that although the present embodiment modes have exemplified such broadcast receiving terminals capable of receiving the television broadcasting programs based upon the “1seg” service, broadcast receiving terminals capable of receiving digital radio programs may be alternatively realized. 
         [0083]    The electronic appliances related to the present invention are useful as broadcast receiving terminals and the like, which automatically perform power control operations.