JP3897124B2 - Display device, bidirectional communication method, recording medium recorded with bidirectional communication program, bidirectional communication system, base device, control method for external input device, and recording medium recorded with control program for external input device - Google Patents

Description

The present invention relates to a display device such as a television receiver that performs bidirectional communication with a predetermined electronic device, a method used in the display device, a recording medium on which a program is recorded , a bidirectional communication system, and the system The present invention relates to a control apparatus for an external input device used in the base device and a recording medium on which a control program for the external input device is recorded .

  For example, in a television receiver, image quality adjustment, timer setting, and the like can be executed on a display screen of the television receiver by operating a remote commander (hereinafter abbreviated as a remote controller) of the television receiver. Displays a menu for selection. Then, the user selects the target process using the remote control of the television receiver, and operates the remote control according to the guidance display displayed on the display screen, thereby adjusting the image quality, setting the timer, etc. The target processing can be performed.

  Further, in a receiver that receives satellite broadcast signals called STB (Set-Top box) or IRD (Integrated Receiver Decoder), data display such as an electronic program guide called EPG is displayed on the display screen of the monitor receiver. It has been done to display. In this case, the user selects the receiver channel by selecting the program to be viewed based on the electronic program guide displayed on the display screen of the monitor receiver using the remote controller of the receiver. The channel can be changed.

  In this way, TV receivers and receivers that receive TV broadcast signals can easily compare target processing by combining information display such as menus, guidance, or electronic program guides with remote control operations. It is devised so that it can be executed easily.

  However, as described above, necessary information such as menus and guidance is displayed on the display screen of the television receiver or the like in order to cause the television receiver, STB, or IRD to perform the desired processing. In the method of operating the remote control while looking at the screen, the operation on the remote control may become complicated.

  For example, in order to display a menu that includes a desired process as a selection item from among a plurality of menus, the menu must be paged multiple times, or the remote controller may be used to move the cursor on the display screen. On the other hand, there are cases where frequent operations have to be performed or determination operations have to be performed through a remote controller.

  In addition, monitor devices such as television receivers are also reduced in size and weight by using LCD (Liquid Crystal Display), etc., so that they can be carried and used in places where users can reach them. It is thought that it will come. In such a case, the remote control of the television receiver is unnecessary, and the presence of the remote control of an external input device such as a receiver that supplies video signals and audio signals to the television receiver becomes troublesome.

  In view of the above, it is an object of the present invention to eliminate the above-mentioned problems, enable remote operation without performing troublesome operations, and to construct a more convenient home network.

In order to solve the above-described problem, a display device according to claim 1 is provided.
According to the received operation signal, one video signal is selected from the first video signal acquired from the broadcast signal via the tuner and the second video signal acquired from the external input device, and converted from the selected video signal. A display device that performs two-way communication with a base device that transmits an information signal,
Receiving means for receiving the information signal transmitted from the base device;
The information signal received through the receiving means, converting means for converting a video signal for displaying an image,
Display means for receiving the supply of the video signal converted through the conversion means and displaying a video corresponding to the video signal ;
Storage means for storing first operation display information including operation information for controlling the base device and second operation display information including operation information for controlling the external input device;
Operation display information reading means for reading the first or second operation display information stored in the storage means ;
Display instruction accepting means for accepting a display instruction input of the first or second operation display information;
Display processing means for performing processing for causing the display means to display the first or second operation display information read by the operation display information reading means together with an image corresponding to an information signal from the base device; ,
When one of the first or second operation display information is displayed on the display unit together with the video corresponding to the information signal from the base device, the first or second unit is displayed through the display instruction receiving unit. When the display instruction input of the operation display information is received, the first or second operation display information that is different from the displayed first or second operation display information is read out. The display so as to control the operation display information reading means and to display the read first or second operation display information together with a video corresponding to an information signal from the base device on the display means. Control means for controlling the processing means;
An operation input acceptance means for accepting an operation input against the first or second operation display information is displayed on the display means,
Operation signal generating means for generating an operation signal corresponding to the operation input received through the operation input receiving means;
Transmission means for transmitting the operation signal generated in the operation signal generation means to the base device.

According to the display device of the first aspect of the present invention, the storage unit includes at least first display information for operation including operation information for controlling the base device according to the operation input, and according to the operation input. Second operation display information including operation information for controlling the external input device. In response to the display instruction input received through the display instruction receiving means , the first or second operation display information read and read by the operation display information reading means is converted by the conversion means and displayed. The image is displayed on the display means together with the video corresponding to the video signal supplied to the means .

Then, by the operation input receiving means, operating input is accepted for operation display information, this operation signal according to the generated by the operation signal generating means, which is transmitted to the base unit by transmission means.

Thus, in response to the display instruction input, the target first or second display information for operation is displayed on the display unit together with the video corresponding to the information signal from the base device, and the operation input for this is received. Accordingly, the base device is controlled in response to the provision of the target information signal, and the target video can be displayed and used. That is, remote operation can be performed without performing troublesome operations, and a more convenient home network can be constructed.

A display device according to a third aspect of the present invention is the display device according to the first aspect,
A touch panel is affixed to the display means ,
The control means, when the first or second operation display information is displayed on the display means, the area other than the area where the first or second operation display information is displayed. If the operation is the touch panel, the first or second operation display information is displayed when the first or second operation display information is displayed and the like should be displayed last When the displayed first or second operation display information is not the last one to be displayed, the first or second operation display information to be displayed next is displayed. It functions to change the display information for operation to read and display .

According to the display device of the third aspect of the present invention, when any display information for operation is displayed on the display means, an operation for an area other than the display area of the display information for operation is accepted through the touch panel. When the displayed display information for operation is other than the display information for operation to be displayed last, other display information for operation is displayed . Further, when the operation display information to be displayed last is displayed, only the displayed operation display information is erased.

As a result, the display information for operation that can be used is switched (selected arbitrarily), the desired operation input can be input to the display device, and the base device can be remotely operated and displayed. The displayed display information for operation can be erased . That is, remote operation can be performed without performing troublesome operations, and a more convenient home network can be constructed.

  According to the present invention, the base device and the external input device connected to the base device can be remotely operated through the operation display information displayed on the display element of the display device and the contact position detecting means such as the touch panel. Therefore, a conventional remote control (remote control device) is not required.

  In addition, since operation input from the user can be received through the operation display information displayed on the display element of the display device and the contact position detecting means such as a touch panel, a remote control (remote operation device) is used as in the past. As in remote control, the input operation is repeated several times to move the cursor, and the enter key is always operated. Can be reduced.

Hereinafter, an embodiment of an apparatus, a method, a program recording medium , and a bidirectional communication system according to the present invention will be described with reference to the drawings.
[Outline of bidirectional communication system]
FIG. 1 is a diagram for explaining a bidirectional communication system according to this embodiment. As shown in FIG. 1, the bidirectional communication system of this embodiment includes a display device 100, a base device (base station) 200, and an STB 300 as an external input device.

  The display device 100 is applied with the display device, method, program, and program recording medium according to the present invention, and includes an LCD 107 as a display element. The display device 100 is connected to the base device 200 by wireless communication, can receive an information signal from the base device 200, and can transmit a control signal to the base device 200.

  As will be described later, the base device 200 of this embodiment is connected to an antenna 201 for receiving a terrestrial analog TV broadcast signal, and includes a tuner for selecting an analog TV broadcast signal, as well as a telephone network and the Internet. And a so-called modem that is a modulation demodulator for connecting to a communication network of the same, and can be connected to a telephone network through a telephone line L. In FIG. 1, a terminal MJ is a connection terminal (modular jack) with a telephone line L drawn from the outside.

  Further, as will be described later, the base device 200 includes an external input terminal, and can be connected to various external input devices such as a VTR, STB, IRD, and DVD (Digital Video Disk) device. ing. In this embodiment, as shown in FIG. 1, an STB 300 is connected to the base device 200 as an external input device.

  Then, the base device 200 selects a channel by its own tuner and demodulates the video signal and audio signal of a television broadcast program obtained from the communication network through its own modem, or An information signal such as a video signal or an audio signal of a satellite broadcast program from the STB 300 is data-compressed to form a transmission signal, which can be transmitted to the display device 100.

  The display device 100 receives and demodulates the transmission signal from the base device 200, extracts a video signal from the demodulated transmission signal, displays a video corresponding to the video signal on the LCD 107, and displays the video signal from the demodulated transmission signal. An audio signal is extracted, and audio corresponding to the audio signal is emitted from the speaker.

  Further, as shown in FIG. 1, the display device 100 can display, for example, a control panel (operation display information) CP for receiving an operation input for controlling the STB 300 on the LCD 107. Yes.

  The control panel is a so-called software key that is displayed by software executed by the control unit of the display device 100. As will be described later, a touch panel 121 is affixed to the LCD 107, and an operation input from the user can be received by the display of the control panel CP and the touch panel 121.

  In this embodiment, as shown in FIG. 1, the control panel CP is for the STB 300, and includes a power on / off key, a numeric key for channel selection, a channel up / down key, It has a volume up / down key.

  The touch panel 121 of the display device 100 detects a contact position (coordinate position) on the touch panel 121 attached to the LCD 107 with which a user's finger or the like has contacted, and configures a control panel CP displayed at the contact position. An operation key (operation item) to be determined is determined, an operation signal corresponding to the operation key is formed, and this can be wirelessly transmitted to the base device 200.

  A remote control signal sending unit 250 for sending an infrared remote control signal called a remote control mouse or the like is connected to the base device 200 through a connection terminal with the remote control signal sending unit 250 and corresponds to an operation signal from the display device 100. A remote control signal is formed and transmitted from the remote control signal sending unit 250 to the STB 300.

  The STB 300 includes a remote control signal light receiving unit 332 including a photodetector for receiving an infrared remote control signal from the remote control of its own device, and receives a remote control signal from a remote control signal transmission unit 250 connected to the base device 200. Thus, it is possible to perform remote control so as to perform control according to the remote control signal, for example, power on / off and channel selection channel change.

  Therefore, the user can perform an operation input to the STB 300 with a so-called one touch through the control panel CP and the touch panel 121 displayed on the LCD 107 of the display device 100, and can remotely operate the STB 300 through the base device 200. .

  In this manner, bidirectional wireless communication is possible between the display device 100 and the base device 200, and bidirectional communication is also possible between the base device 200 and the STB 300 as an external input device. It has been made possible.

  Since the display device 100 is reduced in size and weight, and is connected to the base device 200 by wireless communication, it is suitable for carrying. Therefore, the user carries the display device 100 within a range where communication with the base device 200 is possible, and reproduces an information signal provided from the base device 200 using the display device 100 anywhere. It can be output and provided to the user.

  Therefore, as described above, by using the display device 100, a television broadcast program selected by the tuner of the base device 200 can be viewed, or a satellite broadcast program provided by a satellite broadcast signal selected by the STB 300 can be viewed. When a VTR or DVD device is connected to the base device 200 as an external input device, a movie or the like that is played back by the VTR or DVD device can be viewed. Is done.

  Further, by using the display device 100, for example, so-called homepage information provided on the Internet is acquired through the modem of the base device 200, and the homepage information is viewed, or e-mail addressed to itself is used. , And the electronic mail can be displayed on the LCD 107 for viewing, and further, an electronic mail can be created and transmitted to the intended destination.

  When creating an e-mail, by performing a predetermined operation on the display device 100, for example, a software keyboard made up of alphabet keys, 50 sound keys, and the like is displayed on the LCD 107. An email can be created through the touch panel 121. Then, by performing a predetermined operation such as operating a transmission key, the created electronic mail can be transmitted to the base device 200 and transmitted to the other party through the base device 200.

  As described above, the base device 200 is a device that serves as a base for connecting the display device 100 and various information transmission media such as an external input device such as the STB 300, a terrestrial television broadcast, and a communication network such as the Internet. The display device 100 receives the information signal from the base device 200, reproduces and outputs it, and provides it to the user. The display device 100 forms transmission information such as an e-mail, and uses this as a base. It can be transmitted through the device 200.

[Display device 100]
Next, each device constituting the bidirectional communication system of this embodiment will be described in detail. First, the display device 100 will be described. FIG. 2 is a diagram for explaining the display device 100 according to this embodiment. As shown in FIG. 2, the display device 100 includes a transmission / reception antenna 101, an antenna duplexer 102, a reception processing unit 103, a decoding unit 104, an OSD (On Screen Display) processing unit 105, a video signal processing unit 106, an LCD 107, and an audio signal. An amplification unit 108, a speaker 109, a transmission signal formation unit 111, a transmission processing unit 112, a touch panel 121, and a coordinate detection unit 122 are provided.

  Each unit of the display device 100 of this embodiment is controlled by the control unit 130. As shown in FIG. 2, the control unit 130 includes a CPU (Central Processing Unit) 131, a ROM (Read Only Memory) 132, a RAM (Random Access Memory) 133, and an EEPROM (Electrically Erasable Programmable Memory 134). It is the microcomputer comprised connected through.

  The ROM 132 stores various processing programs executed in the display device 100 of this embodiment, data necessary for processing, and the like. The RAM 133 is mainly used as a work area for various processes, such as temporarily storing and holding data obtained in various processes.

  The EEPROM 134 is a so-called non-volatile memory, and the stored information is not lost even when the power is turned off. For example, the EEPROM 134 is acquired through the base device 200 as described in various setting parameters and details as will be described later. It is possible to store and hold homepages on the Internet, created electronic mails transmitted through the base device 200, received electronic mails, and the like.

  First, the operation of the display device 100 when receiving a radio signal from the base device 200 will be described. In this embodiment, between the display device 100 and the base device 200, for example, a predetermined protocol such as an IEEE (Instituting Electrical and Electronics Engineers) 802.11 protocol or its developed protocol is used. Wireless communication is performed.

  A radio signal compliant with a predetermined communication protocol is received from the base device 200 by the transmission / reception antenna 101 of the display device 100 and supplied to the reception processing unit 103 through the antenna duplexer (hereinafter simply referred to as a duplexer) 102. The duplexer 102 is for preventing the transmission signal and the reception signal from interfering with each other.

  That is, the display device 100 can receive a signal from the base device 200 through the transmission / reception antenna 101 and can wirelessly transmit an operation signal from the own device through the transmission / reception antenna 101 as described later. It is. For this reason, the duplexer 102 prevents the transmission signal from the transmission processing unit 112 from interfering with the reception signal received through the transmission / reception antenna 102 described later.

  The reception processing unit 103 performs processing such as demodulating the signal supplied thereto, and supplies the demodulated signal to the decoding unit (decompression processing unit) 104. As described above, the base device 200 displays video data and audio signals of a terrestrial television broadcast program selected by its own tuner, display data and audio data such as text data and video data received through its own modem. Alternatively, an information signal such as a video signal or an audio signal of a satellite broadcast program from the STB 300 is compressed and transmitted.

  For this reason, the decoding unit 104 of the display device 100 receives the demodulated data-compressed signal supplied from the reception processing unit 103, separates the video signal and the audio signal, and decompresses (compresses) the separated signal. By decompressing, the original signal before data compression is restored.

  Then, the decoding unit 104 performs D / A conversion (digital / analog conversion) on the restored video signal and audio signal to form an analog video signal and an analog audio signal. Then, the decoding unit 104 supplies the analog video signal to the OSD processing unit 105 and supplies the analog audio signal to the audio signal amplification unit 108.

  The OSD processing unit 105 performs video signal processing for displaying the control panel CP and various messages described above with reference to FIG. 1 in accordance with data supplied from the control unit 130, and broadcast. This is a so-called text / graphic processing circuit for displaying display information such as characters, pictures, symbols and the like other than the video of the program.

  For example, when the control panel is displayed according to an instruction from the user, information for displaying the control panel is supplied from the control unit 130 to the OSD processing unit 105. Then, the control panel display from the control unit 130 is combined with the video signal from the decoding unit 104, and this is supplied to the video signal processing circuit 106.

  Further, when displaying character information indicating a channel to be selected, a volume bar indicating a volume level, or the like in accordance with an instruction from the user, information for displaying these is displayed on the control unit 130. To the OSD processing unit 105. Then, the control panel display from the control unit 130 is combined with the video signal from the decoding unit 104, and this is supplied to the video signal processing circuit 106.

  Further, when it is not necessary to synthesize display information such as the control panel CP, the display information is not supplied to the OSD processing unit 105, so the analog video signal from the decoding unit 104 is directly sent to the video signal processing circuit 107. Supplied. The video signal processing unit 106 forms a display signal from the video signal supplied through the OSD processing unit 105, and supplies this to the LCD 107.

  As a result, an image corresponding to the image signal wirelessly transmitted from the base device 200 is displayed on the display screen of the LCD 107. In this case, when display information such as a control panel is synthesized in the OSD processing unit 105, the display information such as the control panel is displayed together with the video based on the video signal from the decoding unit 104.

  On the other hand, the audio signal amplifier 108 amplifies the audio signal supplied thereto to a predetermined level and supplies it to the speaker 109. As a result, a sound corresponding to the sound signal wirelessly transmitted from the base device 200 is emitted from the speaker 109.

  As described above, the display device 100 receives a video signal or an audio signal of a television broadcast program or the like wirelessly transmitted from the channel selection device 200, and reproduces and outputs the received video signal or audio signal. Can be provided to the user.

  Next, in this embodiment, the display device 100 when the control panel is displayed on the LCD 107 of the display device 100 to accept an operation input from the user and an operation signal corresponding to the operation input is transmitted to the base device 200. Will be described. Here, as shown in FIG. 1, a case where a control panel CP for controlling the STB 300 is displayed and an operation input to the STB 300 is received will be described as an example.

  A touch panel 121 is attached to the LCD 107 of the display device 100 of this embodiment. When the display device 100 is powered on and the control panel is not displayed, when the user touches the touch panel 121 with a finger or the like, the coordinate detection unit 122 causes the touch panel 121 to be touched. A contact position (coordinate position) where the upper finger or the like is touched is detected, and this is notified to the control unit 130.

  When the control unit 130 receives the notification of the contact position from the coordinate detection unit 122 when the control panel is not displayed, the control unit 130 determines that this is a display instruction for the control panel. In this embodiment, the control unit 130 first reads necessary information from the ROM 132 to display the control panel CP for the STB 300, and forms information for displaying the control panel CP. Is supplied to the OSD processing unit 105.

  The OSD processing unit 105 receives the supply of information from the control unit 130, forms a video signal for displaying the control panel CP, and synthesizes it with the analog video signal from the decoding unit 104. As shown in FIG. 1, the control panel CP is displayed on the display screen of the LCD 107.

  In this embodiment, the control unit 130 uses a so-called alpha blending technique to control the display on the control panel so as not to hide the video displayed on the LCD 107 by the video signal from the decoding unit 104. In addition to specifying the panel color, an alpha value (α value) indicating transparency is also included in the information for displaying the control panel CP, and supplied to the OSD processing unit 105.

  Thereby, the control panel CP can be displayed on the LCD 107 without hiding the video displayed on the LCD 107 by the video signal from the decoding unit 104. That is, as shown in FIG. 1, the control panel CP displays the image of the mountain by the video signal from the decoding unit 104 without concealing it. An operation input from the user can be received through the control panel CP and the touch panel 121 displayed on the display screen of the LCD 107.

  Then, when the user brings a finger or the like into contact with the position on the touch panel 121 where the target operation key of the control panel CP displayed on the display screen of the LCD 107 is displayed, the contact position is determined by the coordinate detection unit 122. And this is notified to the control unit 130. The control unit 130 determines the operation key of the control panel CP displayed at the contact position on the touch panel 121 from the coordinate detection unit 122, forms an operation signal corresponding to the operation key, and sends it to the transmission signal forming unit 111. Supply.

  The transmission signal forming unit 111 forms a transmission signal to be transmitted to the base device 200 from the operation signal from the control unit 130, and supplies this to the transmission processing unit 112. The transmission processing unit 112 performs a process such as modulating or amplifying the transmission signal supplied thereto to form a transmission signal in a form to be actually transmitted, and this is transmitted to the base device through the duplexer 102 and the transmission / reception antenna 101. 200 is transmitted by radio.

  In this way, the operation signal wirelessly transmitted from the display device 100 is received by the base device 200. In the case of this example, in the base device 200, a remote control signal for the STB 300 corresponding to the operation signal from the display device 200 is formed and transmitted to the STB 300 so that the STB 300 can be remotely operated. The

  Further, a key input unit 141 is connected to the display device 100 of this embodiment through an interface (indicated as I / F in FIG. 2) 140. The key operation unit 141 includes, for example, a power on / off switch, and the operation input received through the key operation unit 141 is supplied to the control unit 130 through the I / F 140, and the operation keys such as power on are operated. It is possible to perform processing according to the above.

  Here, the case where an operation signal for the STB 300 is transmitted through the control panel CP for the STB 300 has been described as an example. However, the base device 200 can be remotely operated using the display device 100 in the same manner as in the STB 300.

  That is, when the base device 200 is remotely operated through the display device 100, a control panel for the base device 200 is displayed. In this embodiment, when a finger or the like is brought into contact with the touch panel 121 when the power is turned on and the control panel is not displayed, the touch panel CP for the STB 300 is first displayed as described above.

  When a finger or the like is brought into contact with the touch panel 121 outside the display area of the touch panel CP, the control unit 130 determines that the display instruction is for the control panel for the base device 200 and displays the control panel for the base device 200. In addition, an operation input to the base device 200 is received, and an operation signal corresponding to the operation input can be transmitted to the base device 200.

  Then, as will be described later, the base device 200 determines whether the operation signal from the display device 100 is for the own device or an external input device such as the STB 300 connected to the own device. If it is for the device, it is transmitted to the external input device as described above.

  Further, when the operation signal from the display device 100 is for the own device, the own device is controlled according to the operation signal. Thus, the terrestrial analog television broadcast signal in the base device 200 can be selected through the display device 100, and information can be transmitted and received through the modem of the base device.

  In this embodiment, the control panel for the base device 200 is a numeric key (1-12) for instructing the tuner 202 to select a channel, like the control panel CP for the STB 300 shown in FIG. In addition to channel up / down keys and volume up / down keys, a signal corresponding to the TV broadcast signal selected by its own tuner is output, or a signal corresponding to information received through its own modem Or a selector switching key for switching whether to output a signal corresponding to information from an external input device connected to the own device.

  Then, by using the control panel for the base device 200, as in the case of the STB 300, the base device 200 is turned on / off, the channel is changed, and the signal transmitted from the base device 200 is switched through the display device 100. It can be operated remotely.

[About Base Device 200]
Next, the base device 200 shown in FIG. 1 will be described in detail. FIG. 3 is a block diagram for explaining the base device 200 of this embodiment. As shown in FIG. 3, a tuner 202 connected to a receiving antenna 201 for a terrestrial analog television broadcast signal installed outdoors, a demodulator 203, an input terminal 204 for a video signal (Vd), and an audio signal (Au) An input terminal 205, a selector 206, a compression processing unit 207, a transmission signal forming unit 208, a transmission processing unit 209, an antenna duplexer (hereinafter simply referred to as a duplexer) 210, a transmission / reception antenna 211, and a reception processing unit 212 are provided.

  Each unit of the base device 200 of this embodiment is controlled by the control unit 230. As shown in FIG. 3, the control unit 230 is a microcomputer configured by connecting a CPU 231, a ROM 232, a RAM 233, and an EEPROM 234 through a CPU bus 235.

  Here, the ROM 232 records various processing programs executed in the channel selection device 1 of this embodiment, data necessary for the processing, and the like. The RAM 233 is mainly used as a work area for various processes, such as temporarily storing and holding data obtained in various processes.

  The EEPROM 234 is a so-called non-volatile memory, and even if the power is turned off, the stored information is not lost. For example, the broadcast channel selected until just before the main power of the base device 200 is turned off. Information is stored and retained, and after the power is turned on, a so-called last channel memory function can be realized that selects the broadcast signal of the channel that was selected until immediately before the power was turned off. Yes.

  The modem unit 220 is connected to the control unit 230. The modem unit 220 includes an interface (hereinafter abbreviated as I / F) unit 221 and a communication unit 222. The I / F unit 221 is an interface between a communication line, in this embodiment, a telephone line, and the base apparatus 200. The I / F unit 221 receives a signal transmitted through the telephone line or receives signals from the base apparatus 200. Send a signal to the telephone line.

  The communication unit 222 demodulates the signal received through the I / F unit 221 and supplies the demodulated signal to the control unit 230 or modulates the transmission signal from the control unit 230 and supplies the modulated signal to the I / F unit 221. To do. As a result, various data can be transmitted and received with the other party to which the telephone line is connected.

  The base device 200 of this embodiment is connected to the Internet through a modem unit 220, a telephone line L, and a predetermined ISP (Internet Service Provider), receives various information through the Internet, and receives e-mails. It can be sent and received.

  For this reason, the control unit 230 can control the modem unit 220 to be off-hook or on-hook, and when the modem unit 220 is controlled to be off-hook, a dial signal is transmitted to the telephone line. It also has a function as a so-called dialer.

  The control unit 230 is connected to the remote control signal sending unit 250 through the remote control signal forming unit 241 and the remote control signal output terminal 242, and, as described above, the remote control signal corresponding to the operation signal from the display device 100 is transmitted. It can be formed and sent out.

  Although not shown, the control unit 230 is connected to a key input unit provided with a power on / off key and various setting keys, to turn on / off the main power of the base device 200 and various settings. Input can be performed through a key input unit.

  In this embodiment, the tuner 202 of the base device 200 is supplied with a television broadcast signal received by the receiving antenna 201 as shown in FIG. The tuner 202 selects a television broadcast signal corresponding to the channel selection instruction signal from the control unit 230 from among the television broadcast signals from the receiving antenna 201, and supplies the selected television broadcast signal to the demodulation unit 203. . The demodulator 203 demodulates the television broadcast signal supplied thereto, and supplies the demodulated signal (television program signal) to the selector 206.

  The selector 206 is also supplied with information from the control unit 230 in addition to the video signal input through the external input terminal 204 of the video signal and the audio signal input through the external input terminal 205 of the audio signal. . The information supplied from the control unit 230 to the selector 206 is, for example, information on a so-called homepage that has been taken in via the modem unit 220 and published on the Internet, or information such as an e-mail.

  The selector 206 outputs a signal from the demodulation unit 203, outputs signals from the external input terminals 204 and 205, or outputs a signal from the control unit 230 in accordance with the switching control signal from the control unit 230. Switch the output. As described above, the switching control signal supplied from the control unit 230 to the selector 206 is formed in the control unit 230 in accordance with the operation signal wirelessly transmitted from the display device 100.

  The output signal from the selector 206 is supplied to the compression processing unit 207. The compression processing unit 207 compresses the data supplied to the signal using a predetermined compression method. In the compression processing unit 206, for example, the signal from the selector 206 is data-compressed using a data compression method such as MPEG method or Wavelet method.

  The signal compressed by the compression processing unit 207 is supplied to the transmission signal forming unit 208. The transmission signal forming unit 208 forms a transmission signal that conforms to a predetermined communication protocol. As described above, in this embodiment, the base device 200 forms a transmission signal in conformity with, for example, an IEEE (Instituting Electrical and Electronics Engineers) 802.11 protocol or its developed protocol.

  The transmission signal formed in the transmission signal forming unit 208 is supplied to the transmission processing unit 209. The transmission processing unit 209 performs modulation processing and amplification processing of the transmission signal according to the control signal from the control unit 230. The transmission signal processed in the transmission processing unit 209 is wirelessly transmitted through the duplexer 210 and the transmission / reception antenna 211. Similar to the duplexer 102 of the display device 100 shown in FIG. 2, the duplexer 210 prevents the transmission signal and the reception signal from interfering with each other.

  In this manner, the video signal or audio signal of the television broadcast program selected by the tuner 202, the video signal or audio signal received through the external input terminals 204 and 205, or the text of the information acquired through the modem 220 Data, video data, and audio data can be supplied to the display device 100 as described above by data compression and wireless transmission using a predetermined communication protocol.

  Next, the operation of the base device 200 when an operation signal wirelessly transmitted from the display device 100 is received will be described. The operation signal from the display device 100 received through the transmission / reception antenna 211 is supplied to the reception processing unit 212 through the duplexer 210. The reception processing unit 212 demodulates the signal supplied thereto and performs processing such as A / D (analog / digital) conversion to convert it into a signal that can be handled by the control unit 230, and this signal is sent to the control unit 230. Supply.

  When the signal from the reception processing unit 212 is an operation signal for the external input device, in this embodiment, the STB 300, the control unit 230 supplies the received operation signal to the remote control signal forming unit 241 and receives the received operation. Control is performed to form a remote control signal according to the signal.

  Based on the signal from the control unit 230, the remote control signal forming unit 241 forms a remote control signal to be supplied to the STB 300, which is an external input device, in this embodiment, and outputs the remote control signal through the remote control signal output terminal 242. To the remote control signal transmitter 250 connected to the.

  The remote control signal transmission unit 250 transmits the remote control signal from the remote control signal forming unit 241 as an infrared remote control signal. In this way, an operation signal for the STB 300 from the display device 100 is transmitted as an infrared remote control signal so that the STB 300 can be remotely operated.

  In addition, when the signal from the reception processing unit 212 is an operation signal for the own device, that is, the base device 200, the control unit 230 controls each unit according to the received operation signal. As a result, the channel selection by the tuner 201 can be changed and the signal output from the selector 206 can be switched.

  The control unit 230 controls the modem unit 220 when the signal from the reception processing unit 212 is an acquisition request for a target homepage, an e-mail reception request, an e-mail transmission request, or the like. Connect to the Internet by connecting a telephone line to the ISP you are subscribed to.

  Then, a target homepage can be acquired, an e-mail addressed to the user can be received, and an e-mail can be transmitted to a target destination.

  As described above, the base device 200 of this embodiment receives, selects and demodulates a television broadcast signal, and supplies the demodulated video signal or audio signal of the television broadcast program or the external input terminals 204 and 205. The received video signal, audio signal, or video data or audio data supplied through the modem unit 220 and the telephone line is received and demodulated, and the demodulated video data and audio data are compressed. The wireless transmission can be performed according to a predetermined communication protocol.

  Furthermore, the base device 200 according to this embodiment receives an operation signal wirelessly transmitted from the display device 100, and controls a remote controller for controlling the own device or the external input device according to the operation signal. Transmission information such as an electronic mail or the like transmitted from the display apparatus 100 can be transmitted through the modem unit 220 by forming a signal or transmitting the signal.

[About STB300]
FIG. 4 is a block diagram for explaining an STB 300 connected to the base device 200 as an external input device in this embodiment. As shown in FIG. 4, the STB 300 of this embodiment includes a digital tuner (hereinafter simply referred to as a tuner) 302 connected to a satellite broadcast receiving antenna 301, a descrambler 303, a demultiplexer 304, and a video signal. A decoding unit 305 having a decoder and an audio signal decoder, an OSD processing unit 306, an output terminal 307 for a video signal (Vd), and an output terminal 308 for an audio signal (Au) are provided.

  As shown in FIG. 1, the STB 300 of this embodiment includes a control unit 310, a key interface (hereinafter referred to as key I / F) 321, a key input unit 322, a remote control interface (hereinafter referred to as remote control I / F). ) 332 and a remote control signal light receiving unit 332.

  The control unit 310 is a microcomputer formed by connecting a CPU 311, a ROM 312, a RAM 313, and an EEPROM 314 through a CPU bus 315, and controls each unit of the STB 300 of this embodiment.

  Here, the ROM 312 records a processing program executed in the STB 300, necessary data, and the like. The RAM 313 is mainly used as a work area, such as temporarily storing intermediate results of executed processes. The EEPROM 314 is a memory that stores various parameter information set by the user, and is a so-called non-volatile memory in which the stored information is not lost even when the power of the STB 300 is turned off.

  The key input unit 322 is provided with a power on / off key, various adjustment keys, and the like. When an operation input from the user is received through the key operation unit 322, this is supplied to the control unit 310 through the key I / F 321 so that the power can be turned on / off and various adjustments can be performed.

  The remote control signal light receiving unit 332 receives an infrared remote control signal from the remote control of the STB 300, converts it into an electrical signal, and supplies the electrical signal to the control unit 310 through the remote control I / F 331. . That is, the STB 300 can be remotely operated through a remote controller.

  The remote control signal light receiving unit 332 receives not only the remote control signal from the STB dedicated remote control but also the infrared remote control signal addressed to the STB 300 transmitted from the remote control signal transmission unit 250 of the base device 200 described above. This can be converted into an electrical signal. Accordingly, the STB 300 can be remotely operated by an infrared remote control signal transmitted from the base device 200 in accordance with an operation signal from the display device 100.

  When the STB 300 is turned on through the key operation unit 322, the STB 300 according to this embodiment receives a digital satellite broadcast signal, selects a channel, etc., and displays a broadcast program video provided by the digital satellite broadcast. A signal and an audio signal are output.

  In this embodiment, the digital broadcast signal is broadcast in the MPEG TS (Transport Stream) format, and a single satellite broadcast signal includes video signals and audio signals of a plurality of broadcast programs, channel selection. Various data used for processing and the like and data for displaying an EPG (electronic program guide) are packetized and time-division multiplexed.

  A TS format digital satellite broadcast signal (hereinafter simply referred to as a satellite broadcast signal) received by a satellite broadcast receiving antenna 301 installed outdoors is supplied to a tuner unit 302. The tuner unit 302 selects and demodulates the satellite broadcast signal based on the channel selection control signal from the control unit 310, and supplies the demodulated satellite broadcast signal to the descramble unit 3. The channel selection control signal supplied from the control unit 310 to the channel unit 302 is formed in the control unit 310 according to the remote control signal from the user of the display device 100 received through the remote control signal light receiving unit 322.

  The descrambling unit 303 receives, for example, key information for decryption from the control unit 310 and decrypts (cancels) the scramble process (encryption process) applied to the received and selected satellite broadcast signal. The satellite broadcast signal after the scramble decoding is supplied to the demultiplexer 304.

  As described above, the satellite broadcast signal is a TS format signal, and video data and audio data of a plurality of broadcast programs, various digital data related to broadcasting, digital data for forming an EPG, and the like are packetized. In other words, so-called time division multiplexing is performed, and a plurality of broadcast programs and various kinds of information can be provided by one satellite broadcast signal. Each packet is added with a PID (packet ID: packet identifier) so that the STB 300 can separate and extract the target packet from the satellite broadcast signal.

  Therefore, in the demultiplexer 304, based on the channel selection control signal from the control unit 310, the video data and audio data of the broadcast program that is to be broadcast on the channel selected by the user are de-coded. Extract from the satellite broadcast signal from the scrambler 303 and supply the extracted video data and audio data of the broadcast program to the decoder 305.

  Also, the demultiplexer 304 extracts various data related to broadcasting and data for forming an EPG from the satellite broadcast signal from the descrambler 303, and supplies this to the controller 310. The data extracted from the satellite broadcast signal in this way and supplied to the control unit 310 is used when a target broadcast program is selected according to an instruction from the user or used when an EPG is formed. It is done.

  In the STB 300 of this embodiment, the ES (Elementary Stream) of the broadcast program that is separated and extracted by the demultiplexer 304, that is, the video data and audio data of the target broadcast program are encoded in MPEG format. The data is compressed by the conversion method.

  Therefore, the video signal decoder of the decoding unit 5 decompresses (compresses and decompresses) the video data supplied thereto, restores the video signal data before data compression, and performs D / A conversion on this. The analog video signal is converted into an analog video signal, and the analog video signal is supplied to the OSD processing unit 306.

  The OSD processing unit 306 displays various messages as in the OSD 105 of the display device 100 described above, and performs video signal processing for displaying an EPG in the STB 300. Characters, pictures, symbols This is a so-called text / graphic processing circuit for displaying display information such as.

  Therefore, the OSD processing unit 306 combines the message information with the video signal from the decoding unit 305 or forms a video signal for displaying an EPG and outputs it. Note that, when message information composition or EPG display is not instructed, the video signal from the decoding unit 305 is output through the OSD processing unit 306 and the output terminal 307. In this embodiment, as described above, the video signal output from the STB 300 is supplied to the base device 200 through the input terminal 204 of the base device 200.

  The audio signal decoder of the decoding unit 5 decompresses the audio data supplied thereto, restores the audio signal data before data compression, and converts it into an analog audio signal by D / A conversion. This is output through the audio signal output terminal 308. The audio signal output from the STB 300 is supplied to the base device 200 through the input terminal 205 of the base device 200 in the same manner as the video signal.

  As described above, an infrared remote control signal for STB 300 according to an operation signal from display device 100 transmitted from remote control signal transmission unit 250 of base device 200 is received by remote control signal light receiving unit 332. The remote control signal light receiving unit 332 converts the signal into an electric signal, which is supplied to the control unit 310.

  The infrared remote control signal for the STB 300 according to the operation signal transmitted from the display device 100 of the base device 200 is a power on / off instruction, a channel change instruction, or the like for the STB 300. In STB 300, processing according to a remote control signal from base device 200 is performed.

  That is, when receiving a remote control signal from the base device 200 via the remote control signal light receiving unit 332, the control unit 310 of the STB 300 turns on / off the STB 300 or controls the tuner 302 according to the received remote control signal. The satellite broadcast signal to be selected can be changed, or the demultiplexer 304 can be controlled to change the broadcast program from which data is extracted in the demultiplexer 304. The

  In the bidirectional communication system according to this embodiment including the display device 100, the base device 200, and the STB 300 described above, the base device 200 transmits the TV broadcast signal received through its tuner unit 202 as described above. A video signal, an audio signal, information received through the modem unit 220, and a video signal and an audio signal supplied from an external input device such as the STB 300 are transmitted to the display device 100 as radio signals.

In this way, the video signal and the audio signal wirelessly transmitted from the base device 200 are received through the display device 100, reproduced and output, and provided through the display device 100 as a target terrestrial analog TV broadcast signal. Information provided through a broadcast program, a television broadcast program provided by digital satellite broadcasting, or a network such as the Internet can be viewed.

  The display device 100 receives an operation input from the user through a control panel displayed on the LCD 107, wirelessly transmits an operation signal corresponding to the operation input to the base device 200, and remotely transmits the base device 200 and the STB 300. It can be operated.

[Processing in each apparatus when remotely controlling STB 300]
Next, processing in each of the display device 100, the base device 200, and the STB 300 when the STB 300 is remotely operated through the control panel displayed on the LCD 107 of the display device 100 will be described with reference to the flowcharts of FIGS. To do.

[Processing in Display Device 100]
FIG. 5 is a flowchart for explaining processing executed in the control unit 130 of the display device 100 after the display device 100 is powered on. As shown in FIG. 5, when the power is turned on, the control unit 130 of the display device 100 monitors the detection output from the coordinate detection unit 122 and determines whether or not the user touches the touch panel 112. It judges (step S11) and will be in a waiting state until the contact to the touch panel 112 is detected.

  When it is detected in step S11 that the touch panel 112 has been touched, the control unit 130 displays the control panel CP for the STB 300 and accepts an operation input through the control panel CP (step S12). ).

  And the control part 130 of the display apparatus 100 judges whether the contact by the user to the control panel CP was detected, ie, the operation input from a user was received (step S13). When it is determined in the determination process of step S13 that an operation input from the user has been received, the control unit 130 uses the operation key of the control panel displayed at the contact position based on the detection output from the coordinate detection unit 122. It discriminate | determines (step S14).

  Then, the control unit 130 forms an operation signal corresponding to the determined operation key and supplies it to the transmission signal forming unit 111 to form a transmission signal (step S15), which is transmitted to the transmission processing unit 112, Wireless transmission is performed to the base device 200 through the duplexer 102 and the transmission / reception antenna 101 (step S16). And the process from step S13 is repeated and the operation input from a user is received through a control panel.

  If it is determined in step S13 that contact with the control panel is not detected, control unit 130 determines whether display on another control panel is instructed (step S17). The determination in step S17 is, as described above, in this embodiment, it is determined whether or not the user has performed a touch operation on the touch panel 121 other than the display area of the displayed control panel. It is processing.

  When it is determined in step S17 that display of another control panel has been instructed, the control unit 130 displays a control panel to be displayed next, in this embodiment, a control panel for the base device 200. (Step S18), returning to the processing from Step S13, an operation input to the newly displayed control panel is accepted.

  When it is determined in the determination process in step S17 that an instruction to display another control panel has not been received, the control unit 130 determines whether or not an instruction to erase the displayed control panel has been issued (step S19). In step S19, after the control panel is displayed on the LCD 107, if an operation input to the control panel is not accepted for a predetermined time (in the case of time-out), or an instruction to erase the control panel is given. It is determined whether a predetermined operation input has been accepted.

  When it is determined in the determination process of step S19 that the control panel is not erased, the control unit 130 repeats the process from step S13 to accept an operation input from the user to the control panel. If it is determined in step S19 that an instruction to erase the control panel is given, the control panel displayed on the LCD 107 of the display device 100 is erased (step S20), and the processing from step S11 is repeated.

  As described above, the display device 100 according to the present embodiment performs the control panel display for accepting the operation input on the LCD 107, the control panel display, the touch panel 121 attached to the display screen of the LCD 107, and the coordinate detection unit 122. Are used so that an operation input from the user can be received, and an operation signal corresponding to the received operation input can be formed and transmitted to the base device 200.

[Processing in Base Device 200]
Next, processing in the base device 200 that receives an operation signal wirelessly transmitted from the display device 100 will be described with reference to a flowchart of FIG. The process shown in FIG. 6 is also a process executed in the control unit 230 of the base device 200 after the main power supply is turned on.

  When the main power supply of the base device 200 is turned on, the base device 200 monitors the output signal from the reception processing unit 212 and determines whether or not the operation signal from the display device 100 has been received (step S21). If it is determined in step S21 that the operation signal from the display device 100 has not been received, the process from step S21 is repeated.

  When it is determined in step S21 that the operation signal from the display device 100 has been received, the control unit 230 of the base device 200 determines whether or not the operation signal from the display device 100 is for the base device 200. (Step S22).

  In the determination process of step S22, when it is determined that the operation signal from the display device 100 is for the base device 200, the control unit 230 of the base device 200 performs a process according to the received operation signal from the display device 100. (Step S23), the tuner 202 is controlled to change the broadcast signal to be selected, or the selector 206 is switched. Then, the processing from step S21 is repeated. In this way, the base device 200 can be remotely operated using the display device 100.

  In the determination process of step S22, when it is determined that the operation signal from the display device 100 is not for the base device 200, the control unit 230 controls the remote control signal forming unit 241, and from the received display device 100. A remote control signal corresponding to the operation signal is formed (step S24).

  The remote control signal formed in step S24 is supplied to the remote control signal sending unit 250 through the remote control signal output terminal 242 of the base device 200, and is transmitted as an infrared remote control signal to the STB 300 which is an external input device (step S25). ). Thereby, the STB 300 can be remotely operated through the base device 200 using the display device 100.

[Processing in STB300]
Next, processing in the STB 300 that receives an infrared remote control signal transmitted from the remote control signal transmission unit 250 of the base device 200 will be described with reference to the flowchart of FIG. In the processing shown in FIG. 7, the STB 300 is turned on. For example, the last channel memory function is used to select the channel that has been selected until immediately before the power is turned off. This is a process executed in the control unit 310 of the STB 300 after outputting a video signal and an audio signal.

  The control unit 310 of the STB 300 determines whether a remote control signal addressed to itself is received through the remote control light receiving unit 332 (step S31). If it is determined in step S31 that the remote control signal addressed to the own device has not been received, the process returns to step S31 and waits until a remote control signal addressed to the own device is received.

  When it is determined in step S31 that the remote control signal addressed to the own device has been received, the control unit 310 of the STB 300 forms a control signal corresponding to the remote control signal addressed to the own device (step S32). By supplying to each related part, the process according to the received remote control signal is performed (step S33).

  As described above, in the bidirectional communication system according to this embodiment, the video signal and the audio corresponding to the video signal and the audio signal from the base device 200 can be viewed and listened using the display device 100. Furthermore, in the interactive communication system of this embodiment, the display device 100 can be used to remotely control the base device 200, and the display device 100 can be used to remotely control the STB 300 through the base device 200. Can do.

  That is, the display device 100 has a function as a monitor receiver. By displaying not only the video signal from the base device 200 but also the control panel on the LCD 107 of the display device 100 and attaching the touch panel 121 to the LCD 107, the display device 100 with a remote control function is configured. Like to do.

In the display device 100 of this embodiment, as described above, the control panel displayed on the LCD 107 is transparently displayed using a technique called alpha blending, and even if the control panel is displayed, the base device is displayed. The video by the video signal from 200 is not lost. Thus, also possible to use a display device 100 as a remote control, it may be so as not to impair the function as the monitor receiver of the display device 100.

  In this embodiment, the case where the STB 300 is connected to the base device 200 has been described as an example. However, it is not limited to this. As described above, the base device 200 can be connected to various external input devices such as a VTR, an IRD, and a DVD device instead of the STB 300.

  As shown in FIG. 8, a plurality of external input devices such as STB 300, VTR 400, and DVD device 500 can be connected to base device 200 by providing a plurality of external input terminals. In this case, the plurality of external input terminals are connected to the selector 206 of the base device 200 shown in FIG. 3 and can be switched according to the control of the control unit 230.

  As shown in FIG. 8, when a plurality of external input devices are connected to the base device 200, a control panel corresponding to the external input device connected to the base device 200 is displayed on the display screen of the display device 100. To display.

  FIG. 9 is a diagram for explaining a table example of a control panel corresponding to a plurality of external input devices displayed on the display device 100. FIG. 9A shows a control panel CP for the STB 300, which includes a power on / off key, a numeric key, a channel up / down key, a volume up / down key, and the like as described above.

  FIG. 9B shows a control panel CP1 for VTR, which includes a pause key, fast forward key, rewind key, play key, stop key, recording key, etc. corresponding to the power on / off key and VTR operation keys. It is what you have. FIG. 9C shows a control panel CP2 for the DVD device, which has a pause key, fast forward key, rewind key, play key, stop key, etc. corresponding to the power on / off key and the DVD operation key. It is what you have.

  In this embodiment, as shown in FIGS. 1 and 9, the control panel is displayed on the right side of the LCD 107, and a finger or the like is touched on the touch panel other than the display area of the control panel. By repeating, the control panel corresponding to each of the base device 200 and each external input device connected to the base device 200 can be rotated and displayed.

  Specifically, in the display device 100 of this embodiment, (1) the control panel CP for the STB → (2) the control panel for the base device 200 → (3) the control panel CP1 for the VTR 400 → (4) Control panel CP2 for DVD device → (5) Erase control panel → (1) Control panel for STB300 Rotate and display the control panel.

  In this case, as described above, the control panel for the base device 200 having the selector switching key is displayed, and the selector switching key of the control panel is operated to operate the selector 206 of the base device 200 as an external input. After switching to output a signal from the device, the target external input device is remotely operated through the display device 100 and the base device 200 by displaying and operating the control panel of the target external input device. Can do.

  As described above, using the control panel and the touch panel displayed on the LCD 107 of the display device 100, the base device 200 is turned on / off, the channel is changed, the selector 206 is switched, the STB 300 is turned on / off, the channel Remote operation such as change of the can be performed. When the external input device is a VTR or DVD device, remote control according to operation keys of each device such as power on / off, pause, fast forward, rewind, playback, stop, recording, etc. It can be performed.

  The remote operation of the base device 200 and the external input device connected to the base device 200 is not limited to the above-described one. For example, if the base device 200 and the STB 300 are compatible with bilingual voices (duplex voices), the main voice and the secondary voices can be provided by providing a key for switching between the main voice and the secondary voices on the control panel. Can be remotely operated through the control panel of the display device 100. When the external input device is a VTR or DVD device, a playback speed adjustment key can be provided on the control panel so that the playback speed can be adjusted remotely through the control panel of the display device 100.

  As described above, the remote operation performed through the control panel displayed on the LCD 107 of the display device 100 is performed by providing various operation keys on the control panel according to the function of the device to be operated. It can be carried out. That is, the base device 200 can be used as a so-called gateway, and various kinds of source information can be viewed on the display device 100.

  Further, in order to smoothly operate a plurality of external input devices, remote control signal transmission units 250 for the plurality of external input devices are connected to the base device 200, and each remote control signal transmission unit is installed in the vicinity of the plurality of external input devices. You may make it do.

  Also, by providing an EPG display key on the EPG control panel CP, an EPG can be formed in the STB 300 and displayed on the LCD 107 of the display device 100 through the base device 200. When a channel is to be selected through the EPG displayed on the LCD 107 of the display device 100, a display area corresponding to each channel in the EPG created by the STB 300 is set in the display device 100.

  By doing in this way, on the EPG displayed on the LCD 107 of the display device 100, by touching the touch panel 121 on which the display item corresponding to the target broadcast program is displayed, the user can select which broadcast. It is determined whether a program is selected. Then, a channel selection operation signal for selecting the determined broadcast program is formed in the display device 100, and this is transmitted from the display device 100 to the STB 300 through the base device 200. Thereby, channel selection of the STB 300 can be controlled using the EPG.

  In this way, display information for operation for performing operations on the base device 200 and the external input device connected to the base device 200 is displayed on the LCD 107 of the display device 100, and the base device is used using the display information for operation. 200 or an external input device connected to the base device 200 can be remotely controlled.

  In this embodiment, the control panel corresponding to each of the base device 200 and each external input device connected to the base device 200 by repeatedly touching a finger or the like on the touch panel other than the display area of the control panel. However, the present invention is not limited to this.

  For example, a control panel switching icon for each switchable device may be provided on each control panel, and the control panel for the target device may be displayed by operating this switching icon. .

  Further, as described above, the base device 200 has been described as including the tuner 202 and the modem 220, but is not limited thereto. Of course, the base device 200 itself may have a function as a VTR, a function as a DVD device, or a function as an STB.

  Further, the base device 200 does not include the tuner 202 or the modem 220, and does not have a function as a VTR, a function as a DVD device, or a function as an STB. It is also possible to configure a device that simply accepts and wirelessly transmits this.

  In the above-described embodiment, the display device 100 and the base device 200 are connected by wireless communication, and an information signal from the external input device to the base device 200 is between the base device 200 and the external input device. The remote control signal from the base device 200 to the external input device is connected by wireless communication using infrared rays through a connection cable. However, it is not limited to this.

  The display device 100 and the base device 200 may be connected by wire, or a remote control signal from the base device 200 to the external input device may be transmitted by wire. In addition, the information signal and the remote control signal can be transmitted and received between the base device 200 and the external input device by wireless communication.

It is a figure for demonstrating one Embodiment of the bidirectional | two-way communication system to which the bidirectional | two-way communication method by this invention was applied. It is a block diagram for demonstrating one Embodiment of the display apparatus 100 to which this invention was applied. 2 is a block diagram for explaining an embodiment of a base device 200. FIG. It is a block diagram for demonstrating STB300 which is an external input device which comprises the bidirectional | two-way communication system shown in FIG. 3 is a flowchart for explaining a control panel display process performed in the display device 100 shown in FIG. 2 and an operation signal transmission process corresponding to an operation input through the control panel. FIG. 4 is a diagram for explaining processing when an operation signal from the display device 100 is received in the base device 200 shown in FIG. 3. FIG. 5 is a diagram for explaining processing when a remote control signal is received from a base device 200 in the STB 300 shown in FIG. 4. 6 is a diagram for explaining an example in which a plurality of external input devices are connected to a base device 200. FIG. FIG. 6 is a diagram for explaining an example of a control panel displayed on a display element of a display device corresponding to each external input device when a plurality of external input devices are connected to the base device 200.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Display apparatus, 101 ... Transmission / reception antenna, 102 ... Antenna duplexer, 103 ... Reception processing part, 104 ... Decoding part, 105 ... OSD processing part, 106 ... Video signal processing part, 107 ... LCD, 108 ... Audio signal amplification part , 109 ... speaker, 111 ... transmission signal forming unit, 112 ... transmission processing unit, 121 ... touch panel, 122 ... coordinate detection unit, 130 ... control unit, 200 ... base device, 201 ... receiving antenna, 202 ... tuner, 203 ... demodulation 204: Video signal (Vd) input terminal, 205: Audio signal (Au) input terminal, 206: Selector, 207 ... Compression processing unit, 208 ... Transmission signal forming unit, 209 ... Transmission processing unit, 210 ... Antenna Duplexer 211 ... transmission / reception antenna 212 ... reception processing unit 230 ... control unit

Claims (53)

According to the received operation signal, one video signal is selected from the first video signal acquired from the broadcast signal via the tuner and the second video signal acquired from the external input device, and converted from the selected video signal. A display device that performs two-way communication with a base device that transmits an information signal,
Receiving means for receiving the information signal transmitted from the base device;
Conversion means for converting the information signal received through the receiving means into a video signal for displaying video;
Display means for receiving the supply of the video signal converted through the conversion means and displaying a video corresponding to the video signal;
Storage means for storing first operation display information including operation information for controlling the base device and second operation display information including operation information for controlling the external input device;
Operation display information reading means for reading the first or second operation display information stored in the storage means;
Display instruction accepting means for accepting a display instruction input of the first or second operation display information;
Display processing means for performing processing for causing the display means to display the first or second operation display information read by the operation display information reading means together with an image corresponding to an information signal from the base device; ,
When one of the first or second operation display information is displayed on the display unit together with the video corresponding to the information signal from the base device, the first or second unit is displayed through the display instruction receiving unit. When the display instruction input of the operation display information is received, the first or second operation display information that is different from the displayed first or second operation display information is read out. The display so as to control the operation display information reading means and to display the read first or second operation display information together with a video corresponding to an information signal from the base device on the display means. Control means for controlling the processing means;
An operation input accepting means for accepting an operation input for the first or second operation display information displayed on the display means;
Operation signal generating means for generating an operation signal corresponding to the operation input received through the operation input receiving means;
A display device comprising: a transmission unit configured to transmit the operation signal generated by the operation signal generation unit to the base device. The display device according to claim 1,
Erasing instruction receiving means for receiving an erasing instruction input of the first or second operation display information;
When one of the first or second operation display information is displayed on the display unit together with a video corresponding to the information signal from the base device, the first or second unit is displayed through the erasure instruction receiving unit. When the erasure instruction input of the display information for operation is accepted, or when the operation input is not accepted for a certain period of time through the operation input acceptance means, the control means and the video displayed on the display means A display device that functions to delete only the first or second operation display information from the first or second operation display information. The display device according to claim 1,
A touch panel is affixed to the display means,
The control means, when the first or second operation display information is displayed on the display means, the area other than the area where the first or second operation display information is displayed. The first or second operation display information that is displayed when the displayed first or second operation display information is to be displayed last when the touch panel is operated. When the displayed first or second operation display information is not the last one to be displayed, the first or second operation display information to be displayed next is displayed. A display device that functions to change display information for operation to read and display the information. The display device according to any one of claims 1 to 3,
The tuner of the base device has a function of receiving a terrestrial analog TV broadcast signal,
It is selected from the video signal of the terrestrial analog television broadcast signal as the first video signal and the second video signal acquired from an external input device, and is converted from the selected video signal and formed. And receiving the information signal transmitted from the base device through the receiving means. The display device according to any one of claims 1 to 3,
The base device has a connection terminal for connecting to a communication network, and selects display information acquired through the communication network instead of the first or second video signal, and converts it. The information signal can be formed and transmitted,
The information signal acquired through the communication network, converted into the information signal and transmitted from the base device is received through the receiving means, converted into the video signal by the converting means, and in response to the video signal A display device characterized in that the displayed image can be displayed on the display means. The display device according to claim 5,
Display control means for controlling the display means to display a software keyboard;
Sending information sending means for sending to the base device sending information to a communication network such as an e-mail received through the software keyboard displayed on the display means,
Information for transmission to the communication network input to the display device is sent to the communication network via the base device. The display device according to claim 5,
A display device comprising: a non-volatile memory that stores and holds received information such as e-mail provided via the communication network and the base device even when the power is turned off. The display device according to any one of claims 1 to 3,
The information signal transmitted from the base device is formed by data compression of a video signal selected from the first or second video signal,
The display device characterized in that the conversion means of the display means has a function of expanding the information signal from the base device received through the receiving means. The display device according to any one of claims 1 to 3,
The display processing unit displays the operation display information to be displayed on the display unit together with the video by using an alpha blending technique that displays the video without hiding it. According to the received operation signal, one video signal is selected from the first video signal acquired from the broadcast signal via the tuner and the second video signal acquired from the external input device, and converted from the selected video signal. A bidirectional communication method for a display device that performs bidirectional communication with a base device that transmits an information signal, wherein the display device includes a receiving means, a converting means, a display means, a storage means, and a display instruction receiving means. And a display processing means, a control means, an operation input receiving means, an operation signal generating means, and a transmitting means,
Receiving the information signal transmitted from the base device through the receiving means;
A conversion step of converting the information signal received in the reception step into a video signal for displaying a video through the conversion unit;
A display step of supplying the video signal converted in the conversion step to the display means, and displaying a video corresponding to the video signal on the display means;
Display instruction input of first operation display information including operation information for controlling the base device or second operation display information including operation information for controlling the external input device, stored in advance in the storage unit A display instruction receiving step for receiving through the display instruction receiving means;
When one of the first or second operation display information is displayed on the display unit together with the video corresponding to the information signal from the base device, the first or second unit is displayed through the display instruction receiving unit. When the display instruction input of the display information for operation is received, the control means is for the first or second operation that is different from the displayed first or second display information for operation. The operation display information reading unit is controlled to read display information, and the read first or second operation display information is displayed on the display unit together with a video corresponding to an information signal from the base device. A control step for controlling the display processing means to display;
An operation input receiving step of receiving an operation input for the first or second operation display information displayed on the display means through the operation input receiving means;
An operation signal generation step of generating an operation signal corresponding to the operation input received in the operation input reception step through the operation signal generation means;
A transmission step of transmitting the operation signal generated in the operation signal generation step to the base device through the transmission means. A bidirectional communication method for a display device according to claim 10,
The display device includes an erasure instruction receiving unit,
An erasure instruction acceptance step for accepting an erasure instruction input of the first or second operation display information through the erasure instruction acceptance means;
When one of the first or second operation display information is displayed on the display unit together with the video corresponding to the information signal from the base device, the first or second operation is performed through the deletion instruction receiving step. When the erasure instruction input of the display information for operation is accepted, or when the operation input is not accepted for a certain period of time through the operation input acceptance step, the control means and the video displayed on the display means An interactive display information erasing step for erasing only the first or second operation display information out of the first or second operation display information. Method. A bidirectional communication method for a display device according to claim 10,
A touch panel is affixed to the display means,
When the first or second operation display information is displayed on the display means, an operation is performed on the touch panel in a region other than the region where the first or second operation display information is displayed. If the control means displays the first or second operation display information to be displayed last, the control means displays the first or second operation display information. When the displayed first or second operation display information is not the last one to be displayed, the first or second operation display information to be displayed next is displayed. A method for bidirectional communication of a display device, comprising the step of changing operation display information to be read and displayed. A bidirectional communication method for a display device according to any one of claims 10 to 12,
The tuner of the base device has a function of receiving a terrestrial analog TV broadcast signal,
In the receiving step, the selected video is selected from the video signal of the terrestrial analog television broadcast signal as the first video signal and the second video signal acquired from an external input device. A bidirectional communication method for a display device, wherein the information signal, which is formed by being converted from a signal and transmitted from the base device, is received through the receiving means. A bidirectional communication method for a display device according to any one of claims 10 to 12,
The base device has a connection terminal for connecting to a communication network, and selects display information acquired through the communication network instead of the first or second video signal, and converts it. The information signal can be formed and transmitted,
In the receiving step, the information signal acquired through the communication network, converted into the information signal and transmitted from the base device can be received through the receiving means. A bidirectional communication method for a display device according to claim 14,
A display control step for displaying a software keyboard on the display means;
A sending information sending step for sending to the base device sending information to a communication network such as an e-mail received through the software keyboard displayed on the display means;
A bidirectional communication method for a display device, wherein information for transmission to the communication network input to the display device can be transmitted to the communication network via the base device. A bidirectional communication method for a display device according to claim 14,
Both of the display devices have a step of storing received information such as an e-mail provided via the communication network and the base device in a nonvolatile memory that retains the stored information even when the power is turned off. Communication method. A bidirectional communication method for a display device according to any one of claims 10 to 12,
The information signal transmitted from the base device is formed by data compression of a video signal selected from the first or second video signal,
In the conversion step of the display means, the information signal from the base device received through the receiving means can be decompressed, and the bidirectional communication method for a display device. A bidirectional communication method for a display device according to any one of claims 10 to 12,
In the control step, the display processing unit is controlled to display the operation display information displayed on the display unit together with the video by using an alpha blending technique for displaying the video without hiding the video. A two-way communication method for a display device. According to the received operation signal, one video signal is selected from the first video signal acquired from the broadcast signal via the tuner and the second video signal acquired from the external input device, and converted from the selected video signal. A recording medium on which a computer program executed by a computer mounted on a display device that performs bidirectional communication with a base device that transmits the information signal is recorded, the display device including a receiving unit, a converting unit, A display unit, a storage unit, a display instruction reception unit, a display processing unit, a control unit, an operation input reception unit, an operation signal generation unit, and a transmission unit;
Receiving the information signal transmitted from the base device through the receiving means;
A conversion step of converting the information signal received in the reception step into a video signal for displaying a video through the conversion unit;
A display step of supplying the video signal converted in the conversion step to the display means, and displaying a video corresponding to the video signal on the display means;
Display instruction input of first operation display information including operation information for controlling the base device or second operation display information including operation information for controlling the external input device, stored in advance in the storage unit A display instruction receiving step for receiving through the display instruction receiving means;
When one of the first or second operation display information is displayed on the display unit together with the video corresponding to the information signal from the base device, the first or second unit is displayed through the display instruction receiving unit. When the display instruction input of the display information for operation is received, the control means is for the first or second operation that is different from the displayed first or second display information for operation. The operation display information reading unit is controlled to read display information, and the read first or second operation display information is displayed on the display unit together with a video corresponding to an information signal from the base device. A control step for controlling the display processing means to display;
An operation input receiving step of receiving an operation input for the first or second operation display information displayed on the display means through the operation input receiving means;
An operation signal generation step of generating an operation signal corresponding to the operation input received in the operation input reception step through the operation signal generation means;
A recording medium on which a computer program is recorded, wherein the operation signal generated in the operation signal generation step is transmitted to the base device through the transmission means. A recording medium on which the computer program according to claim 19 is recorded,
The display device includes an erasure instruction receiving unit,
An erasing instruction receiving step for receiving an erasing instruction input of the first or second operation display information through the erasing instruction input receiving means;
When one of the first or second operation display information is displayed on the display unit together with the video corresponding to the information signal from the base device, the first or second operation is performed through the deletion instruction receiving step. When the erasure instruction input of the display information for operation is accepted, or when the operation input is not accepted for a certain period of time through the operation input acceptance step, the control means and the video displayed on the display means A record in which a computer program is recorded, comprising: performing an operation display information erasing step of erasing only the first or second operation display information of the operation display information. Medium. A recording medium on which the computer program according to claim 19 is recorded,
A touch panel is affixed to the display means,
When the first or second operation display information is displayed on the display means, an operation is performed on the touch panel in a region other than the region where the first or second operation display information is displayed. If the control means displays the first or second operation display information to be displayed last, the control means displays the first or second operation display information. When the displayed first or second operation display information is not the last one to be displayed, the first or second operation display information to be displayed next is displayed. A recording medium on which a computer program is recorded, comprising the step of changing operation display information to be read and displayed. A recording medium on which the computer program according to any one of claims 19 to 21 is recorded,
The tuner of the base device has a function of receiving a terrestrial analog TV broadcast signal,
In the receiving step, the selected video is selected from the video signal of the terrestrial analog television broadcast signal as the first video signal and the second video signal acquired from an external input device. A recording medium on which a computer program is recorded, wherein the information signal which is converted from a signal and transmitted from the base device is received through the receiving means. A recording medium on which the computer program according to any one of claims 19 to 21 is recorded,
The base device has a connection terminal for connecting to a communication network, and selects display information acquired through the communication network instead of the first or second video signal, and converts it. The information signal can be formed and transmitted,
In the receiving step, a computer program is recorded, wherein the information signal acquired through the communication network, converted into the information signal and transmitted from the base device can be received through the receiving means. Recorded media. A recording medium on which the computer program according to claim 23 is recorded,
A display control step for displaying a software keyboard on the display means;
A sending information sending step for sending to the base device sending information to a communication network such as an e-mail received through the software keyboard displayed on the display means;
A recording medium on which a computer program is recorded, wherein information for transmission to the communication network input to the display device can be transmitted to the communication network via the base device. A recording medium on which the computer program according to claim 23 is recorded,
Recording a computer program, comprising: storing received information such as e-mail provided via the communication network and the base device in a non-volatile memory that is stored and retained even when the power is turned off. Recorded media. A recording medium on which the computer program according to any one of claims 19 to 21 is recorded,
The information signal transmitted from the base device is formed by data compression of a video signal selected from the first or second video signal,
A recording medium on which a computer program is recorded, wherein in the converting step of the display means, the information signal from the base device received through the receiving means can be expanded. A recording medium on which the computer program according to any one of claims 19 to 21 is recorded,
In the control step, the display processing unit is controlled to display the operation display information displayed on the display unit together with the video by using an alpha blending technique for displaying the video without hiding the video. A recording medium on which a computer program is recorded. One video signal is selected from the first video signal acquired from the broadcast signal via the tuner and the second video signal acquired from the external input device, and the information signal converted from the selected video signal is transmitted. A base device, and the information signal transmitted from the base device is received and converted into a video signal for displaying a video, the video signal is supplied to display means, and the video corresponding to the video signal is A bidirectional communication system comprising a display device that displays on a display means and transmits an operation signal according to an instruction from a user to the base device,
The display device
Receiving means for receiving the information signal transmitted from the base device;
Conversion means for converting the information signal received through the receiving means into a video signal for displaying video;
Display means for receiving the supply of the video signal converted through the conversion means and displaying a video corresponding to the video signal;
Storage means for storing first operation display information including operation information for controlling the base device and second operation display information including operation information for controlling the external input device;
Operation display information reading means for reading the first or second operation display information stored in the storage means;
Display instruction accepting means for accepting a display instruction input of the first or second operation display information;
Display processing means for performing processing for causing the display means to display the first or second operation display information read by the operation display information reading means together with an image corresponding to an information signal from the base device; ,
When one of the first or second operation display information is displayed on the display unit together with the video corresponding to the information signal from the base device, the first or second unit is displayed through the display instruction receiving unit. When the display instruction input of the operation display information is received, the first or second operation display information that is different from the displayed first or second operation display information is read out. The display so as to control the operation display information reading means and to display the read first or second operation display information together with a video corresponding to an information signal from the base device on the display means. Control means for controlling the processing means;
An operation input receiving means for receiving an operation input for the operation display information displayed on the display means;
Operation signal generating means for generating an operation signal corresponding to the operation input received through the operation input receiving means;
Transmitting means for transmitting the operation signal generated in the operation signal generating means to the base device;
With
The base device is
Receiving means for receiving the operation signal transmitted from the display device;
Forming means for forming the control signal for the external input device based on the operation signal when the received operation signal is for the external input device;
A control signal transmitting means for transmitting the control signal formed by the forming means to the external input device; electrically connected to the forming means via a wired connection;
A two-way communication system comprising: The two-way communication system according to claim 28, wherein
The display device
Erasing instruction receiving means for receiving an erasing instruction input of the first or second operation display information;
When one of the first or second operation display information is displayed on the display unit together with a video corresponding to the information signal from the base device, the first or second unit is displayed through the erasure instruction receiving unit. When the erasure instruction input of the display information for operation is accepted, or when the operation input is not accepted for a certain period of time through the operation input acceptance means, the control means and the video displayed on the display means A bidirectional communication system that functions to delete only the first or second operation display information from the first or second operation display information. A two-way communication system according to claim 28,
A touch panel is affixed to the display means of the display device,
In the display device,
The control means, when the first or second operation display information is displayed on the display means, the area other than the area where the first or second operation display information is displayed. The first or second operation display information that is displayed when the displayed first or second operation display information is to be displayed last when the touch panel is operated. When the displayed first or second operation display information is not the last one to be displayed, the first or second operation display information to be displayed next is displayed. A bidirectional communication system, which functions to change display information for operation to read and display the information. A bidirectional communication system according to any one of claims 28 to 30, wherein
The bidirectional communication system, wherein the tuner of the base device has a function of receiving a terrestrial analog television broadcast signal. A bidirectional communication system according to any one of claims 28 to 30, wherein
The base device is
It has a connection terminal for connecting to a communication network,
The display information acquired through the communication network connected through the connection terminal is selected instead of the first or second video signal, and the information signal is formed by converting the selected display information. , The formed information signal can be transmitted to the display device,
The display device
The information signal acquired through the communication network, converted into the information signal and transmitted from the base device is received through the receiving means, the information signal is converted into the video signal by the converting means, and An interactive communication system characterized in that an image corresponding to an image signal can be displayed on the display means. A bidirectional communication system according to claim 32, wherein
The display device
Display control means for controlling the display means to display a software keyboard;
Sending information sending means for sending sending information to a communication network such as an e-mail received through the software keyboard displayed on the display means to the base device;
With
The base device is
Sending information receiving means for receiving the sending information from the display device;
Sending means for sending the sending information received through the sending information receiving means to the communication network through a connection terminal for connecting to the communication network;
A two-way communication system comprising: A bidirectional communication system according to claim 32, wherein
The display device
A two-way communication system comprising: a non-volatile memory that stores and holds received information such as electronic mail provided via the communication network and the base device even when the power is turned off. A bidirectional communication system according to any one of claims 28 to 30, wherein
The base device is
Compression means for compressing the selected video signal and converting it into the information signal;
The converting means of the display device includes:
A bidirectional communication system having a function of decompressing the information signal from the base device received through the receiving means. The two-way communication system according to claim 35, wherein
The compression means of the base device performs compression processing by the MPEG (Moving Picture Experts Group) system,
The bidirectional communication system characterized in that the decompression means of the display device performs decompression processing by a moving picture experts group (MPEG) method. A bidirectional communication system according to any one of claims 28 to 30, wherein
The base device includes a non-volatile memory that stores and holds information on a broadcast channel being acquired via the tuner even when the power is turned off. A bidirectional communication system according to any one of claims 28 to 30, wherein
The bidirectional processing characterized in that the display processing means of the display device displays the operation display information displayed on the display means together with the video using an alpha blending technique for displaying the video without hiding it. system. One video signal is selected from the first video signal acquired from the broadcast signal via the tuner and the second video signal acquired from the external input device, and the information signal converted from the selected video signal is transmitted. A base device, and the information signal transmitted from the base device is received and converted into a video signal for displaying a video, and a video corresponding to the video signal is displayed on a display unit; The base device of the bidirectional communication system comprising a display device that transmits an operation signal according to an instruction from a user,
The program executed in the display device receives the information signal transmitted from the base device through a receiving unit, and displays the information signal received in the receiving step through the converting unit. A conversion step of converting the video signal into a video signal; a display step of supplying the video signal converted in the conversion step to a display unit; and displaying a video corresponding to the video signal on the display unit; Display instruction input of the first operation display information including the operation information for controlling the base device or the second operation display information including the operation information for controlling the external input device is performed through the display instruction receiving means. The first or second display instruction receiving step and the video corresponding to the information signal from the base device. When one of the operation display information is displayed on the display means, when the display instruction input of the first or second operation display information is received through the display instruction reception means, the control means displays The operation display information reading means is controlled to read out the first or second operation display information that is different from the first or second operation display information that has been read. A control step for controlling the display processing means to display the first or second operation display information on the display means together with a video corresponding to an information signal from the base device; and the display means through the operation input receiving means. An operation input receiving step for receiving an operation input for the displayed first or second operation display information, and the operation received in the operation input receiving step. An operation signal generation step for generating an operation signal corresponding to an input through an operation signal generation unit, and a transmission step for transmitting the operation signal generated in the operation signal generation step to the base device through a transmission unit And
Receiving means for receiving the operation signal transmitted from the display device;
Forming means for forming the control signal for the external input device based on the operation signal when the received operation signal is for the external input device;
A control signal transmitting means for transmitting the control signal formed by the forming means to the external input device; electrically connected to the forming means via a wired connection;
A base device comprising: 40. A base device according to claim 39, comprising:
The program executed in the display device includes an erase instruction accepting step for accepting an erase instruction input of the first or second operation display information through an erase instruction accepting means, and an image corresponding to an information signal from the base device In addition, when one of the first or second operation display information is displayed on the display means, the erasure instruction input of the first or second operation display information is performed through the erasure instruction reception step. When received, or when the operation input is not received for a predetermined time through the operation input receiving step, the control means displays the video displayed on the display means and the first or second operation display information. , And function to delete only the first or second operation display information,
A base device that receives the operation signal from the display device through the receiving means. 40. A base device according to claim 39, comprising:
In the control step of the program executed in the display device, when the first or second operation display information is displayed on the display means, the first or second operation display information is When an instruction is input to the touch panel affixed to the display means in a region other than the displayed region, the displayed first or second operation display information is to be displayed last. In some cases, the display of the displayed first or second operation display information is erased, and when the displayed first or second operation display information is not the last one to be displayed. , The first or second operation display information to be displayed next is read and displayed, and the function is performed to change the operation display information to be displayed.
A base device, wherein the operation signal from the display device is received through the receiving means. A base device according to any of claims 39 to 41,
The tuner has a function of receiving a terrestrial analog television broadcast signal. A base device according to any of claims 39 to 41,
It has a connection terminal for connecting to a communication network,
The display information acquired through the communication network connected through the connection terminal is selected instead of the first or second video signal, and the information signal is formed by converting the selected display information. A base device capable of transmitting the formed information signal to the display device. 44. A base device according to claim 43, comprising:
The display device includes display control means for controlling the display means to display a software keyboard, and information for sending to a communication network such as an e-mail received through the software keyboard displayed on the display means. A transmission information transmitting means for transmitting to the base device,
Sending information receiving means for receiving the sending information from the display device;
Sending means for sending the sending information received through the sending information receiving means to the communication network through a connection terminal for connecting to the communication network;
A base device comprising: A base device according to any of claims 39 to 41,
A base apparatus comprising compression means for compressing a selected video signal and converting it into the information signal. A base device according to claim 45, comprising:
2. A base apparatus according to claim 1, wherein said compression means performs compression processing by an MPEG (Moving Picture Experts Group) system. A base device according to any of claims 39 to 41,
A base apparatus comprising: a non-volatile memory that stores and holds information on a broadcast channel being acquired via the tuner even when the power is turned off. One video signal is selected from the first video signal acquired from the broadcast signal via the tuner and the second video signal acquired from the external input device, and the information signal converted from the selected video signal is transmitted. A base device, and the information signal transmitted from the base device is received and converted into a video signal for displaying a video, and a video corresponding to the video signal is displayed on a display unit; A control method for an external input device used in the base device of a bidirectional communication system including a display device that transmits an operation signal according to an instruction from a user,
The program executed in the display device receives the information signal transmitted from the base device through a receiving unit, and displays the information signal received in the receiving step through the converting unit. A conversion step of converting the video signal into a video signal; a display step of supplying the video signal converted in the conversion step to a display unit; and displaying a video corresponding to the video signal on the display unit; Display instruction input of the first operation display information including the operation information for controlling the base device or the second operation display information including the operation information for controlling the external input device is performed through the display instruction receiving means. The first or second display instruction receiving step and the video corresponding to the information signal from the base device. When one of the operation display information is displayed on the display means, when the display instruction input of the first or second operation display information is received through the display instruction reception means, the control means displays The operation display information reading means is controlled to read out the first or second operation display information that is different from the first or second operation display information that has been read. A control step for controlling the display processing means to display the first or second operation display information on the display means together with a video corresponding to an information signal from the base device; and the display means through the operation input receiving means. An operation input receiving step for receiving an operation input for the displayed first or second operation display information, and the operation received in the operation input receiving step. An operation signal generation step for generating an operation signal corresponding to an input through an operation signal generation unit, and a transmission step for transmitting the operation signal generated in the operation signal generation step to the base device through a transmission unit And
In the base device,
A receiving step of receiving the operation signal transmitted from the display device through a receiving unit;
Forming the control signal for the external input device based on the operation signal when the received operation signal is for the external input device;
A transmitting step of transmitting the control signal formed in the forming step through a control signal transmitting means electrically connected to the control signal forming means via a wired connection;
A control method for an external input device. A control method for an external input device according to claim 48, comprising:
The program executed in the display device includes an erase instruction accepting step for accepting an erase instruction input of the first or second operation display information through an erase instruction accepting means, and an image corresponding to an information signal from the base device In addition, when one of the first or second operation display information is displayed on the display means, the erasure instruction input of the first or second operation display information is performed through the erasure instruction reception step. When received, or when the operation input is not received for a predetermined time through the operation input receiving step, the control means displays the video displayed on the display means and the first or second operation display information. And an operation display information erasing step for erasing only the first or second operation display information. It is those,
A control method for an external input device, wherein the operation signal from the display device is received through the receiving step. A control method for an external input device according to claim 48, comprising:
When the first or second operation display information is displayed on the display unit, the display unit is pasted on the display unit in a region other than the region where the first or second operation display information is displayed. When an instruction is input to the touch panel, when the displayed first or second operation display information is to be displayed last, the displayed first or second operation is displayed. Display of display information is erased, and when the displayed first or second operation display information is not the last one to be displayed, the first or second operation to be displayed next A step of changing the display information for operation to read and display the display information,
A control method for an external input device, wherein the operation signal from the display device is received through the receiving step. One video signal is selected from the first video signal acquired from the broadcast signal via the tuner and the second video signal acquired from the external input device, and the information signal converted from the selected video signal is transmitted. A base device, and the information signal transmitted from the base device is received and converted into a video signal for displaying a video, and a video corresponding to the video signal is displayed on a display unit; A recording medium on which a control program for an external input device to be executed by a computer of the base device of a bidirectional communication system including a display device that transmits an operation signal according to an instruction from a user is recorded,
The program executed in the display device receives the information signal transmitted from the base device through a receiving unit, and displays the information signal received in the receiving step through the converting unit. A conversion step of converting the video signal into a video signal; a display step of supplying the video signal converted in the conversion step to a display unit; and displaying a video corresponding to the video signal on the display unit; Display instruction input of the first operation display information including the operation information for controlling the base device or the second operation display information including the operation information for controlling the external input device is performed through the display instruction receiving means. The first or second display instruction receiving step and the video corresponding to the information signal from the base device. When one of the operation display information is displayed on the display means, when the display instruction input of the first or second operation display information is received through the display instruction reception means, the control means displays The operation display information reading means is controlled to read out the first or second operation display information that is different from the first or second operation display information that has been read. A control step for controlling the display processing means to display the first or second operation display information on the display means together with a video corresponding to an information signal from the base device; and the display means through the operation input receiving means. An operation input receiving step for receiving an operation input for the displayed first or second operation display information, and the operation received in the operation input receiving step. An operation signal generation step for generating an operation signal corresponding to an input through an operation signal generation unit, and a transmission step for transmitting the operation signal generated in the operation signal generation step to the base device through a transmission unit And
In the base device,
A receiving step of receiving the operation signal transmitted from the display device through a receiving unit;
Forming the control signal for the external input device based on the operation signal when the received operation signal is for the external input device;
A transmitting step of transmitting the control signal formed in the forming step through a control signal transmitting means electrically connected to the control signal forming means via a wired connection;
A recording medium on which a control program for the external input device is recorded. A recording medium on which a control program for the external input device according to claim 51 is recorded,
The program executed in the display device includes an erase instruction accepting step for accepting an erase instruction input of the first or second operation display information through an erase instruction accepting means, and an image corresponding to an information signal from the base device In addition, when one of the first or second operation display information is displayed on the display means, the erasure instruction input of the first or second operation display information is performed through the erasure instruction reception step. When received, or when the operation input is not received for a predetermined time through the operation input receiving step, the control means displays the video displayed on the display means and the first or second operation display information. And an operation display information erasing step for erasing only the first or second operation display information. It is those,
A recording medium on which a control program for an external input device is recorded, wherein the operation signal from the display device is received through the receiving step. A recording medium on which a control program for the external input device according to claim 51 is recorded,
In the control step of the program executed in the display device, when the first or second operation display information is displayed on the display means, the first or second operation display information is When an instruction is input to the touch panel affixed to the display means in a region other than the displayed region, the displayed first or second operation display information is to be displayed last. In some cases, the display of the displayed first or second operation display information is erased, and when the displayed first or second operation display information is not the last one to be displayed. A step of reading the first or second operation display information to be displayed next and changing the operation display information to be displayed.
A recording medium on which a control program for an external input device is recorded, wherein the operation signal from the display device is received through the receiving step.

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