Patent Publication Number: US-6983484-B2

Title: Control device, control method, electric apparatus, control method of an electric apparatus, electric apparatus system, control method of an electric apparatus system, and transmission medium

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
   This application is a continuation of and claims priority under 35 U.S.C. §120 to U.S. application Ser. No. 09/828,938, filed Apr. 10, 2001 now U.S. Pat. No. 6,882,352, which is a divisional of U.S. application Ser. No. 09/114,390, filed Jul. 13, 1998 now U.S. Pat. No. 6,246,441 and is also based upon and claims priority under 35 U.S.C. §119 from Japanese Patent Application No. P09-193588, filed Jul. 18, 1997, the entire contents of which are incorporated herein by reference. 

   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to a control device, a control method, an electric apparatus, a control method of an electric apparatus, an electric apparatus system, a control method of an electric apparatus system, and a transmission medium, and, more specifically, to those of a kind in which information to which additional information is added is exchanged. 
   2. Description of the Related Art 
   Conventionally, in recording a desired program with a VTR (video tape recorder), it is necessary to input, through a manipulating section of the VTR, a broadcast start time and end time and a broadcast channel number of the intended program by, for instance, referring to a program page of a newspaper, a magazine, or the like. 
   Further, to store useful information included in an advertisement (commercial) message or the like that is received by a television receiver, it is necessary for a user to make notes on a sheet or the like. 
   In each of the above cases, the user needs to temporarily memorize necessary information and then make inputs through the manipulating section of the VTR or make notes on a sheet or the like. This causes problems that he may inadvertently inputs erroneous information and that he may forget useful information. 
   SUMMARY OF THE INVENTION 
   The present invention has been made in view of the above circumstances in the art, and an object of the present invention is therefore to make it possible to control an electric apparatus such as a VTR or a television receiver or to record useful information without requiring a user to temporarily memorize information. 
   According to a first aspect of the invention, there is provided a control device which controls, by transmitting a control signal to it, an electric apparatus that receives information transmitted via a transmission medium, comprising transmitting means for transmitting the control signal to the electric apparatus; receiving means for receiving additional information that has been extracted from the received information and transmitted by the electric apparatus; and output means for outputting the additional information received by the receiving means to display device. 
   There is provided a control method for controlling, by transmitting a control signal to it, an electric apparatus that receives information transmitted via a transmission medium, comprising a transmitting step of transmitting the control signal to the electric apparatus; a receiving step of receiving additional information that has been extracted from the received information and transmitted by the electric apparatus; and an output step of outputting the additional information received in the receiving step to a display device. 
   There is provided a transmission medium for transmitting a computer program that is used in a control device which controls, by transmitting a control signal to it, an electric apparatus that receives information transmitted via a transmission medium, the computer program comprising a transmitting step of transmitting the control signal to the electric apparatus; a receiving step of receiving additional information that has been extracted from the received information and transmitted by the electric apparatus; and an output step of outputting the additional information received in the receiving step to a display device. 
   According to a second aspect of the invention, there is provided an electric apparatus which receives information that is transmitted via a transmission medium and performs an operation in accordance with a control signal that is transmitted from a control device, comprising first receiving means for receiving the control signal transmitted from the control device; control means for performing a control in accordance with the control signal received by the first receiving means; second receiving means for receiving the information transmitted via the transmission medium; extracting means for extracting additional information from the information received by the second receiving means; and transmitting means for transmitting the additional information extracted by the extracting means to the control device. 
   There is provided a control method of an electric apparatus which receives information that is transmitted via a transmission medium and performs an operation in accordance with a control signal that is transmitted from a control device, comprising a first receiving step of receiving the control signal transmitted from the control device; a control step of performing a control in accordance with the control signal received in the first receiving step; a second receiving step of receiving the information transmitted via the transmission medium; an extracting step of extracting additional information from the information received in the second receiving step; and a transmitting step of transmitting the additional information extracted in the extracting step to the control device. 
   There is provided a transmission medium for transmitting a computer program used in an electric apparatus which receives information that is transmitted via a transmission medium and performs an operation in accordance with a control signal that is transmitted from a control device, the computer program comprising a first receiving step of receiving the control signal transmitted from the control device; a control step of performing a control in accordance with the control signal received in the first receiving step; a second receiving step of receiving the information transmitted via the transmission medium; an extracting step of extracting additional information from the information received in the second receiving step; and a transmitting step of transmitting the additional information extracted in the extracting step to the control device. 
   According to a third aspect of the invention, there is provided an electric apparatus system comprising an electric apparatus which receives information that is transmitted via a transmission medium and a control device which controls the electric apparatus by transmitting a control signal to the electric apparatus, the electric apparatus comprising first receiving means for receiving the control signal transmitted from the control device; control means for performing a control in accordance with the control signal received by the first receiving means; second receiving means for receiving the information transmitted via the transmission medium; extracting means for extracting additional information from the information received by the second receiving means; and first transmitting means for transmitting the additional information extracted by the extracting means to the control device, the control device comprising second transmitting means for transmitting the control signal to the electric apparatus; third receiving means for receiving the additional information transmitted from the first transmitting means of the electric apparatus; and output means for outputting the additional information received by the third receiving means to a display device. 
   There is provided a control method of an electric apparatus system comprising an electric apparatus which receives information that is transmitted via a transmission medium and a control device which controls the electric apparatus by transmitting a control signal to the electric apparatus, an electric-apparatus-side part of the control method comprising a first receiving step of receiving the control signal transmitted from the control device; a control step of performing a control in accordance with the control signal received in the first receiving step; a second receiving step of receiving the information transmitted via the transmission medium; an extracting step of extracting additional information from the information received in the second receiving step; and a first transmitting step of transmitting the additional information extracted in the extracting step to the control device, a control-device-side part of the control method comprising a second transmitting step of transmitting the control signal to the electric apparatus; a third receiving step of receiving the additional information transmitted in the first transmitting step of the electric-apparatus-part of the control method; and an output step of outputting the additional information received in the third receiving step to a display device. 
   There is provided a transmission medium for transmitting a computer program used in an electric apparatus system comprising an electric apparatus which receives information that is transmitted via a transmission medium and a control device which controls the electric apparatus by transmitting a control signal to the electric apparatus, an electric-apparatus-side part of the computer program comprising a first receiving step of receiving the control signal transmitted from the control device; a control step of performing a control in accordance with the control signal received in the first receiving step; a second receiving step of receiving the information transmitted via the transmission medium; an extracting step of extracting additional information from the information received in the second receiving step; and a first transmitting step of transmitting the additional information extracted in the extracting step to the control device, a control-device-side part of the computer program comprising a second transmitting step of transmitting the control signal to the electric apparatus; a third receiving step of receiving the additional information transmitted in the first transmitting step of the electric-apparatus-part of the control method; and an output step of outputting the additional information received in the third receiving step to a display device. 
   In the above-described control device, control method, and transmission medium according to the first aspect of the invention, a control signal is transmitted to the electric apparatus, additional information that has been extracted from received information and transmitted by the electric apparatus is received, and the received additional information is output to the display device. For example, a control signal that has been input by a user through an input section is transmitted to the electric apparatus. An EPG as additional information that has been extracted from received information and transmitted by the electric apparatus is received. The received additional information is output to an LCD as the display device. 
   In the above-described electric apparatus, control method of an electric apparatus, and transmission medium according to the second aspect of the invention, a control signal transmitted from the control device is received, a control is performed in accordance with the received control signal, information transmitted via the transmission medium is received, additional information is extracted from the received information, and the extracted additional information is transmitted to the control device. For example, a control signal that has been input by a user and transmitted from the control device is received. The respective sections of the electric apparatus is controlled in accordance with the received control signal. Information such as a television broadcast program transmitted via the transmission medium is received. An EPG as additional information is extracted from the received information. The extracted EPG is transmitted to the control device. 
   In the above-described electric apparatus system, control method of an electric apparatus system, and transmission medium according to the third aspect of the invention, on the electric apparatus side, a control signal transmitted from the control device is received, a control is performed in accordance with the received control signal, information transmitted via the transmission medium is received, additional information is extracted from the received information, and the extracted additional information is transmitted to the control device. On the control device side, a control signal is transmitted to the electric apparatus, additional information transmitted from the electric apparatus is received, and the received additional information is output to the display device. For example, on the electric apparatus side, a control signal that has been input by a user and transmitted from the control device is received. The respective sections of the electric apparatus is controlled in accordance with the received control signal. Information such as a television broadcast program transmitted via the transmission medium is received. An EPG as additional information is extracted from the received information. The extracted EPG is transmitted to the control device. On the control device side, a control signal that has been input by a user through an input section is transmitted to the electric apparatus. An EPG as additional information transmitted from the electric apparatus is received. The received additional information is output to an LCD as the display device. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  shows an example configuration of an embodiment according to the present invention; 
       FIG. 2  shows an appearance of a remote controller  1  shown in  FIG. 1 ; 
       FIG. 3  is a block diagram showing a detailed example configuration of the remote controller  1  shown in  FIG. 1 ; 
       FIG. 4  is a block diagram showing a detailed example configuration of the personal computer  3  shown in  FIG. 1   
       FIG. 5  is a block diagram showing a detailed example configuration of a television receiver  9  shown in  FIG. 1 ; 
       FIG. 6  is a block diagram showing a detailed example configuration of a VTR  13  shown in  FIG. 1 ; 
       FIG. 7  is a flowchart showing an example of operation that is performed by the remote controller  1  of  FIG. 3 ; 
       FIG. 8  shows a data structure of an EPG; 
       FIG. 9  shows an example of a picture displayed on an LCD  1   f  as a result of execution of step S 8  shown in  FIG. 7 ; 
       FIG. 10  is a flowchart of another example of operation that is performed by the remote controller  1  of  FIG. 3 ; 
       FIG. 11  is an example of a picture to be displayed on the LCD  1   f  as a result of execution of step S 31  shown in  FIG. 10 ; 
       FIG. 12  is a flowchart of still another example of operation that is performed by the remote controller  1  of  FIG. 3 ; 
       FIG. 13  show: an example of a picture that is displayed on the LCD  1   f  as a result of execution of step S 53  shown in  FIG. 12 ; and 
       FIG. 14  shows an example of a picture that is displayed on a CRT monitor  4  of the personal computer  3  as a result of execution of step S 57  shown in  FIG. 12 . 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     FIG. 1  is a block diagram showing an example configuration of an embodiment according to the present invention. 
   In  FIG. 1 , a remote controller  1  converts a control signal that is input from a manipulating section (described later) into an infrared signal and transmits it to an electric apparatus (personal computer  3 , television receiver  9 , or VTR  13 ) as a subject of control. Further, the remote controller  1  receives additional information that is transmitted from the electric apparatus. 
   An IC card  2  (storing means) is inserted into the remote controller  1 , and stores advertisement information such as coupon information when it is supplied. 
   The personal computer  3  is connected to a server  8  via a network  7  such as the Internet, and exchanges prescribed information with the server  8 . A CRT monitor  4  displays information generated by the personal computer  3 , information supplied from the server  8  via the network  7 , or other information. 
   A mouse  5  is manipulated by a user when he inputs some information. An infrared transmission/reception section  6  (first receiving means, transmitting means, first transmitting means) transmits/receives a control signal and additional information to/from the remote controller  1  via infrared light. 
   The television receiver  9  receives, with an antenna  11 , radio waves that are transmitted from an antenna  12  of a broadcasting station, extract a signal on a desired channel, and displays it. Further, the television receiver  9  transmits/receives, with an infrared transmission/reception section  10  (first receiving means, transmitting means, first transmitting means), a control signal and additional information to/from the remote controller  1  via infrared light. 
   The VTR  13  records a video signal that is supplied from the television receiver  9  on a video tape (hereinafter abbreviated as “VT”) and reproduces a video signal recorded on the VT. Further, the VTR  13  transmits/receives, with an infrared transmission/reception section  14  (first receiving means, transmitting means, first transmitting means), a control signal and additional information to/from the remote controller  1  via infrared light. 
     FIG. 2  shows an appearance of the remote controller  1  shown in  FIG. 1 . 
   A speaker  1   j  (notifying means) generates beep sound or the like to call the user&#39;s attention. A LCD (liquid crystal display) if displays additional information etc. that are transmitted from the personal computer  3  or the television receiver  9 . 
   A LED (light-emitting diode)  100  is turned on when an information communication is made with the electric apparatus, to prevent an event that the user directs the remote controller  1  to a direction that goes off the electric apparatus (personal computer  3 , television receiver  9 , or VTR  13 ) during the information communication to disable the communication. 
   A power button  101  is manipulated is manipulated to turn on or off the power of the subject electric apparatus by remote control. 
   A transfer button  102  is manipulated in transferring (transmitting) prescribed information to the electric apparatus. An acquire button  103  is manipulated in acquiring (receiving) desired information that is displayed on the display section of the electric apparatus. 
   An erase button  104  is manipulated in erasing information that is recorded on the IC card  2 . Conversely, the store button  105  is manipulated in recording prescribed information on the IC card  2 . 
   A reserve button  108  is manipulated in making a recording reservation on the VTR  13 . A correct button  107  is manipulated in correct information relating to a recording reservation already made. A confirmation button  106  is manipulated in confirming information relating to a recording reservation already made. 
   Numeral buttons  111 – 120  are manipulated in, for example, changing the reception channel of the television receiver  9 . 
   An R-button  109  is manipulated in changing a setting content. An L-button  110  is manipulated to decide about an input command or the like. A cruciform button  121  is manipulated to move the cursor upward, downward, rightward, or leftward. 
     FIG. 3  is a block diagram showing a detailed example configuration of the remote controller  1  shown in  FIG. 1 . 
   In  FIG. 3 , a CPU  1   a  controls the respective sections of the device and performs various operations and the like. A ROM  1   b  stores various programs, data, and the like. A RAM  1   c  (second storing means) temporarily stores interim data, programs, etc. when the CPU  1   a  performs various operations. An interface (IF)  1   d  (output means) converts data in accordance with the data expression form in each of devices (infrared transmission/reception section  1   e  etc.) connected thereto to enable a data exchange between the CPU  1   a  and the device. 
   The infrared transmission/reception section  1   e  (transmitting means, receiving means, second transmitting means, third receiving means) exchanges information with the electric apparatus via infrared light. That is, the infrared transmission/reception section  1   e  transmits infrared light based on data that is supplied from the IF  1   d , and also receives infrared light that has been transmitted from the electric apparatus, converts it into a corresponding electrical signal, and outputs it to the CPU  1   a  via the IF  1   d.    
   The LCD If displays an image signal that is supplied from the IF  1   d . A timer  1   g  keeps date and time. 
   An input section  1   h  (selecting means, second selecting means) is manipulated when the user inputs a prescribed control command or the like, and is specifically the manipulation buttons shown in  FIG. 2 , for instance. An IC card recording/reproduction section  1   i  records information on the IC card  2  and reads out recorded information therefrom. 
     FIG. 4  is a block diagram showing a example configuration of the personal computer  3  shown in  FIG. 1 . 
   In  FIG. 4 , a CPU  3   a  (control means, extracting means) controls the respective sections of the apparatus and performs various operations and the like. A ROM  3   b  stores various programs, data, and the like. A RAM  3   c  temporarily stores interim data, programs, etc. when the CPU  3   a  performs various operations. 
   An interface (IF)  3   e  converts data in accordance with the data expression form in each of devices (CRT monitor  4 , input device  5 , and infrared transmission/reception section  6 ) connected thereto to enable a data exchange between the CPU  3   a  and the device. 
   The CRT monitor  4  displays, as an image, RGB signals that are output from the personal computer  3 . The input device  5  is, for instance, a mouse (or keyboard) shown in  FIG. 1 , and is manipulated when the user inputs some information. 
   The infrared transmission/reception section  6  exchanges information with the remote controller  1  via infrared light. That is, the infrared transmission/reception section  6  transmits infrared light based on data that is supplied from the IF  3   e , and also receives infrared light that has been transmitted from the remote controller  1 , converts it into a corresponding electrical signal, and outputs it to the CPU  3   a  via the IF  3   e.    
     FIG. 5  is a block diagram showing a detailed example configuration of the television receiver  9  shown in  FIG. 1 . 
   In  FIG. 5 , a CPU  9   a  (control means, extracting means) controls the respective sections of the apparatus and performs various operations and the like. A ROM  9   b  stores various programs, data, and the like. A RAM  9   c  temporarily stores interim data, programs, etc. when the CPU  9   a  performs various operations. 
   An interface (IF)  9   d  converts data in accordance with the data expression form in each of devices (TV tuner  9   e , input section  9   g , and infrared transmission/reception section  10 ) connected thereto to enable a data exchange between the CPU  9   a  and the device. 
   The TV tuner  9   e  (second receiving means) extracts a signal of a selected channel from radio waves that have been transmitted from a broadcasting station and received by the antenna  11 , and causes a display section (CRT: cathode-ray tube)  9   f  to display it. Further, the TV tuner  9   e  extracts an EPG (electronic program guide), advertisement information (including coupon information, a URL, or the like), or like information that is included in broadcast waves, and supplies it to the IF  9   d  as text data. A reception channel of the TV tuner  9   e  is selected in accordance with a control signal that is supplied from the CPU  9   a  via the IF  9   d.    
   The input section  9   g  is constituted of, for instance, channel selection buttons, volume buttons (not shown), etc., and is manipulated when the user inputs some information. 
   The infrared transmission/reception section  10  exchanges information with the remote controller  1  via infrared light. That is, the infrared transmission/reception section  10  generates and transmits infrared light based on data that is supplied from the IF  9   d , and also receives infrared light that has been transmitted from the remote controller  1 , converts it into a corresponding electrical signal, and outputs it to the CPU  9   a  via the IF  9   d.    
     FIG. 6  is a block diagram showing a detailed example configuration of the VTR  13  shown in  FIG. 1 . 
   In  FIG. 6 , a CPU  13   a  (control means, extracting means) controls the respective sections of the apparatus and performs various operations and the like. A ROM  13   b  stores various programs, data, and the like. A RAM  13   c  temporarily stores interim data, programs, etc. when the CPU  13   a  performs various operations. 
   An interface (IF)  13   d  converts data in accordance with the data expression form in each of devices (VT recording/playback section  13   e , input section  13   f , timer  13   g , and infrared transmission/reception section  14 ) connected thereto to enable a data exchange between the CPU  13   a  and the device. 
   For example, the VT recording/playback section  13   e  (second receiving means) records a video signal that is supplied from the television receiver  9  on a VT  13   h , and also reproduces a video signal that is recorded on the VT  13   h  and outputs it to the television receiver  9 . 
   The input section  13   f  is constituted of, for instance, a record button, a playback button, a stop button (not shown), etc., and is manipulated when the user inputs some information. 
   The timer  13   g  keeps date and time. 
   The infrared transmission/reception section  14  exchanges information with the remote controller  1  via infrared light. That is, the infrared transmission/reception section  14  generates and transmits infrared light based on data that is supplied from the IF  13   d , and also receives infrared light that has been transmitted from the remote controller  1 , converts it into a corresponding electrical signal, and outputs it to the CPU  13   a  via the IF  13   d.    
   Next, the operation of this embodiment will be described with reference to a flow chart of  FIG. 7 . 
     FIG. 7  is a flowchart showing an example of a process that is executed by the CPU  1   a  of the remote controller  1  in acquiring, with the remote controller  1 , an EPG that has been transmitted from the antenna  12  of a broadcasting station and received by the television receiver  9 . 
   Upon activation of this process, at step S 1 , the CPU  1   a  of the remote controller  1  judges whether the acquire button  103  has been depressed. If it is judged that the acquire button  103  has not been depressed (No), the process returns to step S 1 . This operation is repeated until depression of the acquire button  103 . If it is judged that the acquire button  103  has been depressed (Yes), the process goes to step S 2 . 
   At step S 2 , the CPU  1   a  turns on the LED  100  to indicate that information is being transferred. The process then goes to step S 3 . 
   At step S 3 , the CPU  1   a  supplies a prescribed control signal to the infrared transmission/reception section  1   e . As a result, the infrared transmission/reception section  1   e  generates an infrared signal corresponding to the control signal and transmits it to the television receiver  9 . The television receiver  9  receives the transmitted infrared signal with the infrared transmission/reception section  10 , and reproduces the control signal. The CPU  9   a  of the television receiver  9  temporarily stores, in the RAM  9   c  or the like, an EPG being received by the TV tuner  9   e  in accordance with the control signal that has been received by the infrared transmission/reception section  10 , and then transmits it to the remote controller  1  via the infrared transmission/reception section  10 . 
     FIG. 8  shows an example of a data structure of an EPG. As shown in  FIG. 8 , an EPG is formed in such a manner that a plurality of (in this example, four) data blocks are linked to each other. The first block (leftmost block in  FIG. 8 ) consists of a broadcast tag No.  200  indicating a broadcast number, data  201  indicating a broadcast time and channel, and a program tag No.  202  indicating a block that follows the first block. 
   The second block consists of a program tag No.  203  for a link to the first block, data  204  indicating a program title, a performer tag No.  205  indicating the third block, and a content tag No.  206  indicating the fourth block. 
   The third block (shown at a top-right position in  FIG. 8 ) consists of a performer tag No.  207  for a link to the second block, data  208  indicating performer names, and data  209  indicating performer information. 
   The fourth block (shown at a bottom-right position in  FIG. 8 ) consists of a content tag No.  210  for a link to the second block and data  211  indicating program contents. 
   For example, the above information is transmitted from a broadcasting station in a state that it is superimposed on a video signal in vertical flyback periods. 
   Returning to  FIG. 7 , at step S 4 , the CPU  1   a  of the remote controller  1  scores the received EPG in a prescribed area of the RAM  1   c . When the entire EPG has been stored, the process goes to step S 5 . 
   At step S 5 , tie CPU  1   a  turns off the LED  100  to indicate that the information transfer has finished. The process then goes to step S 6 . 
   At step S 6 , the CPU  1   a  recognizes a channel number of current reception. That is, the CPU  1   a  transmits a prescribed control signal from the infrared transmission/reception section  1   e , and recognizes a channel number of current reception by referring to information indicating it that is transmitted in response. 
   Instead of directly inquiring of the television receiver  9 , a channel number of current reception may be recognized by referring to part of the numeral buttons  111 – 120  that was depressed immediately before for channel selection. 
   At step S 7 , the CPU  1   a  recognizes the present time by acquiring information indicating it from the timer  1   g  via the IF  1   d . The process then goes to step S 8 . 
   At step S 8 , the CPU  1   a  causes the LCD if to display an EPG of programs to be broadcast from this time onward on the channel of current reception. Specifically, the CPU  1   a  searches EPGs (guides for programs to be broadcast on the day on all channels) stored in the RAM  1   c  for data relating to program to be broadcast from this time onward on the channel of current reception by referring to the channel of current reception and the present time recognized at steps S 6  and S 7 , and then causes the LCD  1   f  to display the data obtained. 
     FIG. 9  shows an example of an EPG to be displayed on the LCD if as a result of the above operation. 
   In this example, an EPG of programs to be broadcast from this time onward on channel  10 . Specifically, the EPG shows that “ABB News” will be broadcast from 6:00 to 6:30 and “Be Disgraced in Quiz Show” will be broadcast from 6:30 to 7:00. The EPG also shows that “TV Scramble” will be broadcast from 7:00 to 8:00, “Monico Grand Prix” will be done from 8:00 to 9:00, “Creation of All Things” will be done from 9:00 to 10:00, “News Station Eyes” will be done from 10:00 to 11:30, and “Conductors in the World” will be done from 11:30 to 12:00. 
   The above embodiment makes it possible to acquire, with the remote controller  1 , an EPG that has been received by the television receiver  9  and display it on the LCD If. Therefore, for example, even while the user watches some broadcast program on the television receiver  9 , he can check programs to be broadcast from this time onward by using an EPG without obstructing the display of the television receiver  9 . 
   Although in the above embodiment only an EPG relating to programs to be broadcast from this time onward on the channel of current reception, EPGs of all programs to be broadcast on all channels, for example, may be displayed. Further, a modification is possible which allows the user to select an EPG that he wants to display by a predetermined manipulation. 
   Next, with reference to a flowchart of  FIG. 10 , a description will be made of an example of a process for making a recording reservation on the VTR  13 , by using the display example of  FIG. 9 . 
     FIG. 10  is a flowchart showing an example of a process of making a recording reservation on the VTR  13  by using the remote controller  1  that has acquired the EPG. 
   Upon activation of the process of  FIG. 10 , at step S 30 , the CPU  1   a  of the remote controller  1  judges whether some program has been selected on the display picture of  FIG. 9 . Specifically, the CPU  1   a  judges whether the L-button  110  for deciding about a selection has been depressed after the cruciform button  121  shown in  FIG. 2  was manipulated and some program was selected by the cursor (not shown) on the display picture shown in  FIG. 9 . If the CPU  1   a  has judged that no program has been selected (No), the process returns to step S 30  to repeat the above operation. If it is judged at step S 30  that some program has been selected (Yes), the process goes to step S 31 . 
   Now, assume that the item “10:00–11:30 News Station Eyes” that is displayed on the sixth line on the display picture of  FIG. 9  was selected by the cruciform button  121  and then the L-button  110  was depressed, a judgment “Yes” is made at step S 30  and the process goes to step S 31 . 
   At step S 31 , the program title and the broadcast time are displayed. Specifically, the CPU  1   a  reads out, from the RAM  1   c , the program title, start and end time, performers (in this case, anchor men), and contents and has those displayed on the LCD If. 
     FIG. 11  shows an example of a picture to be displayed when the program “10:00–11:30 News Station Eyes,” which is shown on the sixth line on the display example of  FIG. 9 , is selected. In this display example, the title “News Station Eyes” of the selected program is shown at the top of the picture. The broadcast start time “10:00” and end time “11:30” are shown under the title. The names of anchor men “Tetsuya Kume” and “Etsuo Komiya” are shown thereunder. Further, program contents “Up-to-the-minute Reports of Election Returns,” “Preventive Measures against 0158,” and “Does Life Exist on Mars?” are shown thereunder. 
   Returning to  FIG. 10 , at step S 32 , the CPU  1   a  judges whether the transfer button  102  has been depressed. If it is judged that the transfer button  102  has not been depressed (No), the process returns to step S 32  to repeat the same operation until depression of the transfer button  102 . If it is judged that the transfer button  102  has been depressed (Yes), the process goes to step S 33 . 
   At step S 33 , the CPU  1   a  transmits a prescribed control signal as an instruction for a recording reservation and the information relating to the program selected at step S 30 , that is, the broadcast start and end time and the broadcast channel number, to the VTR  13  via the infrared transmission/reception section  1   e . The CPU  13   a  of the VTR  13  captures, via the IF  13   d , the signal received by the infrared transmission/reception section  14 , and stores it in the RAM  13   c.    
   Assume that the transfer button  102  is depressed at this time point. A judgment of “Yes” is made at step S 32 , and the process goes to step S 33 . At step S 33 , a control command as an instruction for a recording reservation and the information (the broadcast start time and end time and the broadcast channel number) relating to the sixth program “News Station Eyes” that was designated on the picture of  FIG. 9  are transmitted to the VRT  13 . 
   At step S 34 , it is judged whether the reserve button  108  has been depressed. If the reserve button  108  has not been depressed (No), the process returns to step S 34  to repeat the same operation until depression of the reserve button  108 . If it is judged that the reserve button  108  has been depressed (YES), the process goes to step S 35 . 
   At step S 35 , the CPU  1   a  transmits a decision command for deciding about the recording reservation for which the instruction was made at step S 33 , to the VTR  13  via the infrared transmission/reception section  6 . The CPU  13   a  of the VTR  13  receives this command via the infrared transmission/reception section  14 , whereby the recording reservation relating to the information stored in the RAM  13   c  is finally set. When the time that is kept by the timer  13   g  becomes the broadcast start time that is stored in the RAM  13   c , the CPU  13   a  sends a control signal to the VT recording/playback section  13   e  to start recording of the program whose broadcast channel number is stored in the RAM  13   c . When the time that is kept by the timer  13   g  becomes the broadcast end time that is stored in the RAM  13   c , the CPU  13   a  sends a control signal to the VT recording/playback section  13   e  to finish the recording of the program. 
   Assume that the reserve button  108  is depressed at this time point. A judgment of “Yes” is made at step S 34  and the process goes to step S 35 . At step S 35 , a decision command is transmitted from the remote controller  1  to the VTR  13 , whereby a recording reservation of the program “News Station Eyes” for which the related information has been transmitted is finally set. 
   In the above embodiment, a desired program is selected from an EPG that has been acquired by the remote controller  1  and a recording reservation is made on the VTR  13  by using information relating to the program. Therefore, it becomes possible to eliminate the time and labor of inputting information such as a broadcast start time and end time and a broadcast channel number to the VTR  13  or the remote controller  1 . 
   Although the above embodiment is directed to the case where an EPG is received by the remote controller  1 , the invention is not limited to such a case. For example, advertisement information may be received by the remote controller  1 . Such an embodiment will be described below with reference to a flowchart of  FIG. 12 . 
     FIG. 12  is a flowchart showing an example of a process that is executed in the remote controller  1  when advertisement information that has been received by the television receiver  9  is transferred to the remote controller  1 . 
   In this embodiment, the television receiver  9  is so configured as to extract advertisement information that is inserted, for instance, between programs and to automatically transmit it to the remote controller  1 . 
   Upon activation of this process, at step S 50 , the CPU  1   a  of the remote controller  1  judges whether advertisement (commercial) information has been received from the television receiver  9 . That is, when receiving commercial information in, for instance, a period between programs, the infrared transmission/reception section  10  automatically transmits it to the remote controller  1 . 
   Examples of commercial information are information such as the product name, features, and price of a commodity, and the URL and coupon information of a company that manufactures or sells a commodity. 
   At step S 51 , beep sound indicating reception of commercial information is generated. That is, the CPU  1   a  sends a predetermined signal to the speaker  1   j  via the IF  1   d , and beep sound is thereby generated. As a result, the user knows that commercial information has been received. 
   At step S 52 , the CPU  1   a  stores the commercial information that was received at step S 50  in the RAM  1   c . The process then goes to step S 53 . 
   At step S 53 , the CPU  1   a  reads out the commercial information that is stored in the RAM  1   c  and causes the LCD If to display it. 
     FIG. 13  shows an example of a picture that is displayed on the LCD  1   f  as a result of execution of step S 53 . In this example, it is shown at the top of the picture that this is a display of commercial information relating to TONY&#39;s digital still camera. A product name “DSC-100” of the commodity as a subject of advertisement is shown on the second line. 
   Features of the commodity are listed under the product name. In this example, “Business Card Size,” “One Million Pixels,” “Capable of Taking 1,000 Pictures at the Maximum,” and “Also Capable of Recording Sound” are shown. The price of the product “Y39,800” is shown thereunder. 
   “Now, 10%-discount Is Available with Coupon!” is shown under the price, which means that this commercial information includes coupon information. 
   Commercial information may include coupon information as accompanying information. In such a case, the coupon information is transmuted from the television receiver  9  to the remote controller  1  together with the commercial information and then stored in the RAM  1   c.    
   Returning to  FIG. 13 , a URL “www.tony.com” of the company that manufactures or sells this commodity is shown on the last line. Like coupon information, URL information of this kind is transmitted, as accompanying information, from the television receiver  9  to the remote controller  1  together with commercial information and then stored in the RAM  1   c.    
   Returning to  FIG. 12 , at step S 54 , it is judged whether the store button  105 , which is to be manipulated in storing coupon information that is included in commercial information in the IC card  2 , has depressed. If it is judged that the store button  105  has not been depressed (No), the process goes to step S 56  skipping step S 55 . 
   At step S 55 , the CPU  1   a  extracts the coupon information that is included in the commercial information and supplies it to the IC card recording/reproduction section  1   i . The IC card recording/reproduction section  1   i  records the received coupon information in a prescribed area of the IC card  2 . By bringing the IC card  2  on which the coupon information of the commodity is recorded to, for instance, a proper store, the commodity can be purchased at a lower price than the ordinary price. 
   At the next step S 56 , it is judged whether the transfer button  102  has been depressed. If it is judged that the transfer button  102  has not been depressed (No), the process skips step S 57  and ends. If it is judged that the transfer button  102  has been depressed (Yes), the process goes to step S 57 . 
   Specifically, to access the homepage having as an address the URL that is shown at the last line of the picture of  FIG. 13 , the user manipulates the transfer button  102  after directing the remote controller  1  to the personal computer  3 . As a result, a judgment of “Yes” is made at step S 56  and the process goes to step S 57 . 
   At step S 57 , the CPU  1   a  reads out the URL included in the commercial information that is stored in the RAM  1   c  and supplies it to the infrared transmission/reception section  1   e . The infrared transmission/reception section  1   e  converts the received URL into a corresponding infrared signal and transmits it. 
   The URL that has been transmitted in this manner is received by the infrared transmission/reception section  6  of the personal computer  3  and supplied to the CPU  3   a . The CPU  3   a  transmits the URL to the network  7  via the modem section  3   d  (second receiving means). As a result, a communication circuit is established with a server  8  corresponding to the transmitted URL and allows a communication between the personal computer  3  and the server  8 . 
     FIG. 14  shows an example of a picture that is displayed on the CRT monitor  4  of the personal computer  3  when step S 57  is executed. 
   In this display example, “Internet Skimmer” that is the name of software used (for information exchange via the network  7 ) is shown at the top of the picture. The URL “www.tony.com” that has been transferred from the remote controller  1  at step S 57  is shown in the frame located under the software name. 
   An image that has been transmitted from the server  8  after the establishment of the communication circuit is shown in the window that is shown under the above-mentioned frame. In this display example, a catch phrase, features, the name, the price, an image, etc. of the product DSC-100 for which display is made on the LCD if of the remote controller  1  are displayed. 
   The process of the CPU  1   a  ends when step S 57  is completed. 
   In the above embodiment, commercial information that is included in broadcast waves received by the television receiver  9  is automatically transmitted to the remote controller  1 . Therefore, when the user is interested in information that has been received by the remote controller  1 , he can refer to it later without haste. Further, by accessing the homepage of the seller or manufacturer of the commodity by using the personal computer  3 , more detailed information of the commodity can be obtained. Still further, as for purchasing of the commodity, coupon information may be stored in the IC card  2  by depressing the store button  106 . By bringing the IC card  2  to, for instance, a proper store, the commodity can be purchased at a lower price than the ordinary price. 
   Although in the above embodiment the television receiver  9  automatically transmits commercial information, the invention is not limited to such a case. For example, the television receiver  9  may transfer commercial information only when receiving a transfer request from the remote controller  1 . 
   Another embodiment is possible in which commercial information is classified into a plurality of categories and commercial information to which information indicating its category is added is transmitted. In this embodiment, a category that is frequently referred to by the user (i.e., category that is considered to attract his interest) may be stored in the RAM  1   c , and commercial information may be received and stored only when its category is the same as the category stored in the RAM  1   c.    
   Although the above embodiments are directed to the case of analog ground-wave broadcast, the invention is not limited to such a case. For example, it goes without saying that the invention can also be applied to satellite broadcast, digital broadcast, cable television broadcast, and the like. 
   Although in the above embodiments a communication is made between the remote controller  1  and the personal computer  3 , the television receiver  9 , or the VTR  13 , a data communication may be made between the personal computer  3 , the television receiver  9 , and the VTR  13 . For example, it is possible to make a recording reservation by converting, into an infrared signal, an EPG described in a homepage that is accessed by the personal computer  3  and then transmitting it to the VTR  13 , for instance. 
   Further, the invention can be applied to even current electric apparatuses by making commands that are transmitted from or received by the remote controller correspond to SIRCS commands of respective makers. 
   In this specification, the term “transmission medium” includes not only information recording media such as a FD and a CD-ROM but also network transmission media such as the Internet and a digital broadcast satellite. 
   Obviously, numerous modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described herein.