JP2004096394A - Television reception system, television receiver, and mobile terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television reception system, a television receiver, and a mobile terminal whereby a program received by using the television reception system can be viewed at a place apart from an installed place of a monitor TV connected to the television receiver and a video recorded program can be viewed at a place apart from the installed place of the monitor TV connected to the television receiver. <P>SOLUTION: A hard disk 2, an MPEG encoder 3, and an ID data memory 4 are provided to an IRD device 1, the hard disk 2 can record data of a television program regularly reproduced, the MPEG encoder 3 converts a signal form of video recording data read from the hard disk 2 or television program data reproduced in real time into a signal form in compliance with the MPEG 4 standards. An ID data memory 4 stores in advance a telephone number of a communication terminal 6 permitting the control applied to the IRD device 1 via a communication section and data of a form of an image display section. Display of a display apparatus 7 is controlled on the basis of the data stored in the memory. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a television receiving system that receives and reproduces a television broadcast, a television receiving device, and a mobile terminal.
[0002]
[Prior art]
2. Description of the Related Art Generally, a television broadcast performed using a wired transmission line formed of a coaxial cable or an optical cable, or a wireless transmission line such as a satellite wave or a terrestrial wave, has been performing AM modulation of an analog video signal and simultaneously converting an audio signal. Analog broadcast programs that transmit FM-modulated signals at a predetermined carrier frequency have become mainstream, but in recent years analog video signals and audio signals have been digitized, and the data after digital compression has been QPSK-modulated or QAM-modulated. Digital broadcasting has been started in which digital modulation is performed using a modulation method such as that described above, and this signal is transmitted using a digital transmission method such as the OFDM method.
[0003]
This digital broadcasting has been made possible by remarkable advances in semiconductor technology and image and audio signal compression technology. Compared to conventional analog broadcasting, more digital broadcasting is available within the frequency band of the same transmission path. And the adoption of a digital transmission system such as the OFDM system has many advantages such as high-quality broadcasting with little transmission signal deterioration.
[0004]
Such a broadcast service can provide services in various transmission forms such as terrestrial wave transmission, satellite wave transmission, cable transmission, and the like, and the signal of the television broadcast program includes user ID information. Is transmitted as a pay television program broadcast signal including charging information and when the user receives the signal, performs authentication based on the user ID information and charging information included in the received signal, and when all conditions are satisfied. An IRD system that can reproduce video and / or audio of pay television programs properly has been widely used.
[0005]
For example, as shown in FIG. 6, a specific configuration of the above-mentioned IRD system is configured by connecting a monitor TV 14 and a receiving antenna 15 to the IRD device 13 so that the user of the IRD device 13 can view and listen to the desired channel. A broadcast signal is transmitted from a service center 16 that generates a transmission signal based on a variety of user information including data of a specific program to a broadcasting satellite 17, and a broadcast signal is transmitted from a broadcasting satellite 17 that receives the broadcast signal. Is transmitted to the ground.
[0006]
The broadcast radio wave is received by the receiving antenna 15, the signal is subjected to a predetermined decoding process, converted into a video signal, and the video is reproduced on the monitor TV 14, and the audio is reproduced by an audio device (not shown).
[0007]
In this case, the broadcast radio wave transmitted from the broadcast satellite 17 is a signal to which encryption (scramble modulation) based on a predetermined algorithm has been applied, and the signal of the television broadcast program includes user ID information and billing information. It is a signal of a transmitted pay television program broadcast, and when received as it is, it is in a state where regular video and audio cannot be reproduced, and authentication by the IRD device 13, that is, user ID information included in the transmitted radio wave and When all the limiting conditions, such as reference to a charging period, reference to a charging channel, and reference to whether or not a device ID is registered properly, are performed based on information obtained by receiving the charging information. The encryption is released, and normal video and audio can be reproduced.
[0008]
Therefore, the user of the IRD system can view his / her favorite program by contacting the service center 16 through a telephone line or the like to register the charging permission for a specific channel or a specific program. It is to be performed uniquely on the scheduled broadcast date and time.
[0009]
[Problems to be solved by the invention]
The viewing of a television program by a conventional television receiving system is generally performed using a monitor TV fixedly installed in a home or the like, and is used in a place other than the place where the monitor TV is installed. It is not possible to watch.
[0010]
Therefore, an object of the present invention is to enable a program received using a television receiving system to be viewed at a location remote from a place where a monitor TV connected to the receiving device is installed, and to allow a recorded program to be received by a receiving device. To provide a television receiving system, a television receiving apparatus, and a portable terminal that can be viewed at a place remote from a place where a monitor TV connected to the TV is installed.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, a television receiving system, a television receiving device, and a mobile terminal according to the present invention employ the following characteristic configurations.
[0012]
(1) a television receiver that receives, reproduces, and outputs or records a television broadcast signal;
A mobile terminal connected to the television receiver via a communication line,
A television receiving system comprising:
The television receiver,
A communication unit connected to the mobile terminal via a communication line,
An image quality determining unit that determines an image quality to be transmitted to the mobile terminal;
An encoding unit that encodes a received or recorded television broadcast based on the determination result of the image quality determination unit,
A transmitting unit that transmits the television broadcast signal encoded by the encoding unit via the communication unit,
With
The mobile terminal,
A transmission request unit for requesting transmission of a television broadcast signal;
An image quality information transmitting unit for transmitting image quality information determined by the image quality determining unit,
A decoding unit that decodes the encoded television broadcast signal received from the television receiver,
A display unit that displays the television broadcast signal decoded by the decoding unit;
With
The television receiver is configured to determine an image quality to be transmitted based on image quality information received from the mobile terminal based on a transmission request for a television broadcast signal from a mobile terminal connected via the communication line, and to determine the determined image quality. Based on the received TV broadcast signal encoded and transmitted to the mobile terminal,
A television receiving system, wherein the portable terminal decodes and displays an encoded television broadcast signal received from the television receiving device.
[0013]
(2) The image quality information transmitted from the image information transmitting unit of the portable terminal is a telephone number transmitted when connected to the television receiver via a communication line, or a telephone number transmitted to identify the portable terminal. ID data to be input,
The television receiver,
The portable terminal and a portable terminal display unit correspondence table showing the correspondence of the display capability of the display unit,
A telephone number obtained when connected to the mobile terminal via a communication line, or ID data transmitted from the mobile terminal, and specifying the display capability of the mobile terminal from the mobile terminal display unit correspondence table, The television receiving system according to (1), wherein the image quality determining unit automatically determines the image quality to be transmitted to the mobile terminal based on the specified display capability.
[0014]
(3) A television receiver for receiving, reproducing, outputting or recording a television broadcast,
A communication unit connected to the mobile terminal via a communication line,
An image quality determining unit that determines an image quality to be transmitted to the mobile terminal;
An encoding unit that encodes the received or recorded television broadcast signal based on the determination result of the image quality determination unit,
A transmitting unit that transmits the television broadcast signal encoded by the encoding unit via the communication unit,
With
The image quality to be transmitted is determined based on the image quality information received from the mobile terminal based on a transmission request of a television broadcast signal from the mobile terminal connected via the communication line, and the television broadcast received based on the determined image quality A television receiver for encoding a signal and transmitting the encoded signal to the portable terminal.
[0015]
(4) a portable terminal display unit correspondence table indicating correspondence between the portable terminal and the display capability of the display unit,
A telephone number obtained when connected to the mobile terminal via a communication line, or ID data transmitted from the mobile terminal, and specifying the display capability of the mobile terminal from the mobile terminal display unit correspondence table, The television receiver according to (3), wherein the image quality determination unit automatically determines the image quality to be transmitted to the mobile terminal based on the specified display capability.
[0016]
(5) A mobile terminal connected to the television receiver via a communication line,
A transmission requesting unit that requests the television receiver to transmit a television broadcast signal,
An image quality information transmission unit for transmitting image quality information;
A decoding unit for decoding the encoded television broadcast signal received from the television receiver,
A mobile terminal comprising: a display unit that displays the television broadcast signal decoded by the decoding unit.
[0017]
(6) The image quality information transmitted from the image information transmission unit of the portable terminal is:
The mobile terminal according to the above (5), which is a telephone number transmitted when connected to the television receiver via a communication line, or ID data input for specifying the mobile terminal.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, the configurations of an IRD system as a television receiving system and a television receiving device will be described with reference to FIG.
[0019]
In FIG. 1 in which the overall configuration of the IRD system and the image transfer device and the state of the screen display are expressed together, the IRD device 1 adds user ID information and charging information to a signal of a television broadcast program encrypted by a predetermined algorithm. When the superimposed transmission signal is received by using the reception antenna 5 and user authentication is performed by comparing user device information with user ID information and billing information included in the received signal, and when a predetermined condition is satisfied. In addition, control is performed such that decoding of the signal of the encrypted television broadcast program is permitted and the television broadcast program can be properly reproduced.
[0020]
The IRD device 1 is provided with a hard disk 2, an MPEG4 encoder 3 and an ID data memory 4. The hard disk 2 can record the data of a TV broadcast program that has been properly reproduced, and the MPEG4 encoder 3 reads the data from the hard disk 2. The signal format of the output recorded data or the television program data reproduced in real time is subjected to signal conversion corresponding to the MPEG4 standard.
[0021]
The IRD device 1 includes a communication unit (not shown), a determination unit, a recording information distribution unit, and an ID data memory 4. The communication unit is formed so that the communication terminal 6 can control the IRD device 1. There is provided an ID data memory 4 in which a telephone number of a communication terminal 6 permitting control to be performed on the IRD apparatus 1 via a unit and data in the form of an image display unit are stored in advance.
[0022]
Further, the determination unit is configured to compare the ID data of the communication terminal 6 received by the communication unit with the data stored in the ID data memory 4 to determine whether control of the IRD device 1 is permitted or rejected. When the control of the IRD device 1 is permitted as a result of the determination by the above, control is performed so that the television broadcast program already recorded on the hard disk 2 can be distributed in a signal format compatible with the format of the display 7 of the communication terminal 6. A recording information distribution unit is provided, and a switching radio station (not shown) is interposed in a control signal transmission line that connects the mobile terminal 6 and the IRD device 1 by signal.
[0023]
The receiving antenna 5 connected to the IRD device 1 receives a broadcast wave transmitted from a broadcast satellite (not shown).
[0024]
An operation key unit 8 including a numeric keypad and a mode key is provided below the display 7 provided on the portable terminal 6, and various operation commands are issued by pressing any operation button of the operation key unit 8. It is configured to be able to give.
[0025]
The operation of the image transfer apparatus of the IRD system according to the present embodiment having the main parts configured as described above will be described with reference to the flowcharts shown in FIGS. In each flowchart, a left column portion surrounded by a broken line represents a processing operation step on the side of the portable terminal 6, and a right column portion surrounded by a broken line represents a processing operation step on the side of the IRD device 1. The operation line in the figure connecting the left column portion and the right column portion transmits and receives a data signal from the portable terminal 6 to the exchange radio station through the cellular phone line, and connects the relay line to the IRD device 1 from the exchange radio station. This is a data signal transmission / reception system for transmitting / receiving a data signal via the LAN.
[0026]
When transmission from the mobile terminal 6 to the IRD device 1 is started, first, step S1 of the flowchart shown in FIG. 2 is executed, and the operation key unit 8 is displayed while viewing the telephone number screen 7 displayed on the display 7 of the mobile terminal 6. The dialing to the specified telephone number, that is, the telephone number assigned to the IRD device 1 is started by pressing the numeric keypad, and the call data is transmitted to the exchange radio station via the mobile telephone line.
[0027]
The call data received by the switching radio station is called to the IRD device 1 via a relay line formed by a wired telephone line, and the IRD device 1 in the standby state executes step S2 to execute the call. Is determined, and if there is a call, the process proceeds to step S3 to establish a line.
[0028]
Simultaneously with the operation of step S3, step S4 is executed on the portable terminal 6 side, and it is determined whether or not a line is established. If No, step S1 is re-executed, and The process proceeds to step S5.
[0029]
When the line is established (step S3) on the IRD device 1 side, the process proceeds to the next step S6, where a signal requesting input of ID data is transmitted to the portable terminal 6 side, and the portable terminal 6 receiving this signal proceeds to step S5. Then, the operation of inputting the ID and transmitting the data to the IRD device 1 is started. Specifically, by pressing the operation key unit 8 while watching the ID input request screen 7-1 displayed on the display 7 of the mobile terminal 6, ID data (for example, a five-digit number) preset in the device is obtained. ) Can be input.
[0030]
When the step S5 is completed, the ID data is transmitted to the IRD device 1, the ID data is detected in the step S7, and when there is no ID data (in the case of No), the step S6 is executed again and the ID data is present. In the case of (Yes), the process proceeds to step S8, and is the received ID data applicable to the ID list stored in the ID data memory 4 of the IRD device 1? Is determined, if there is a match (in the case of Yes), the process proceeds to the next step S9, and if there is no match (in the case of No), the process proceeds to step S10, which is stored in the IRD device 1 in advance. The list of compatible models is transmitted to the mobile terminal 6. In this case, if there is no corresponding ID in the ID list, the process is terminated, so that unauthorized use by anyone other than the authorized person can be prevented.
[0031]
The step S11 executed after the step S5 is executed on the portable terminal 6 is to determine whether or not the input of the ID number performed using the numeric keypad 8 has been completed. ), The process returns to step S5, and if completed (yes), the process proceeds to the next step S12. Step S12 is for judging whether or not the model name of the portable terminal 6 has been inputted. If the name has been inputted (in the case of Yes), the process proceeds to the next step S13, and the transmission has already been performed in the step S10 on the IRD device 1 side. The received model name list is received, and the process proceeds to the next step S14.
[0032]
Step S14 is to select and specify the corresponding device by depressing the operation key section 8 while viewing the corresponding model list screen 7-2 displayed on the display 7 of the portable terminal 6, and the selected model name data Is transmitted to the IRD device 1 side, received in step S15, and proceeds to step S9.
[0033]
In step S9, the screen size displayed on the display 7 of the portable terminal 6 is determined based on the model name received in step S15 or the model name determined to correspond to the ID list in step S8. .
[0034]
Then, if No is determined in step S12, the process proceeds to step S16 in FIG. 3 via the relay point (A) formed for the convenience of drawing creation, and after step S9 is executed, The process proceeds to step S17 in FIG. 3 via the relay point (B).
[0035]
Step S16, which is a process on the mobile terminal 6, determines whether the user wants to transfer a TV program from a broadcast satellite or a TV program recorded on the hard disk 2. Is to select and specify one by pressing the operation key unit 8 while viewing the reproduction source selection screen 7-3 displayed on the display 7 of the portable terminal 6.
[0036]
On the other hand, in step S17 executed on the IRD device 1, it is necessary to specify whether it is desired to transfer a TV program from a broadcasting satellite or a TV program recorded on the hard disk 2. A request to that effect is transmitted to the portable terminal 6 side. The next step S18 is whether or not the user wants to transfer a TV program from a broadcasting satellite in real time or if the TV program recorded on the hard disk 2 Is transmitted to the portable terminal 6 side to request whether the content is to be transferred or not.
[0037]
In the case of No in step S12, three states of transmission of a selection request in step S17 and transmission of a selection request for real-time transfer and content transfer in step S18 are determined in step S16. The HD content list is received, and the process proceeds to the next step S20 to select a desired transfer from the HD content list. Specifically, a program selection screen 7- displayed on the display 7 of the mobile terminal 6 By pressing the operation key section 8 while looking at 4, any one is selected and specified.
[0038]
The transfer request selected in step S20 is transmitted to the IRD device 1, and the IRD device 1 that has received the request in step S21 determines satellite broadcast / HD transfer in step S22. If it is determined, the process proceeds to step S23, where the list is transmitted, the selection is received in the next step S24, and the transfer is determined in the next step S25.
[0039]
If it is determined in step S22 that the transfer is the HD transfer, the flow advances to step S26 to transmit the HD content list. In step S27, the selected content is received. The flow advances to step S28 to determine the transfer determination in step S25. A transfer image based on the data is determined. The selection up to these determinations can be made while viewing the program selection screen 7-4 and the program content screen 7-5 displayed on the display 7 of the portable terminal 6.
[0040]
On the other hand, if it is determined in step S16 on the mobile terminal 6 side that the broadcast is a satellite broadcast, the process proceeds to step S29 to receive a broadcast reception channel list, and a desired channel is selected from the list in step S30.
[0041]
Then, the processing shifts to the flowchart shown in FIG. 4 via the relay points (C) and (D), and first, in step S31 on the IRD device 1, data for requesting the mobile terminal 6 to select the image quality is transmitted. This is received in step S32 of the portable terminal 6 and the image quality is selected in the next step S33. Specifically, the operation is performed while looking at the image quality selection screen 7-6 displayed on the display 7 of the portable terminal 6. By pressing the key section 8, one of "LOW, NORM, HIGH" is selected and specified.
[0042]
The data of which image quality has been selected in step S33 is received in step S34 of the IRD apparatus 1, the image quality is determined in step S35, and the image is encoded by the MPEG4 encoder 3 based on the image quality determined in step S36. Then, the image is transferred to the portable terminal 6 side, the transfer wait state is set in step S38 on the portable terminal 6 side, and the data reception is completed in the next step S39? Is determined, the transfer is not completed (if No), step S38 is executed again, and if it is determined that the transfer is completed by step S39 (if Yes), the process proceeds to step S40. Note that the display capability of the display screen may be uniquely determined from the ID or the model name of the portable terminal 6 and the image quality may be automatically selected. In this case, the processing of steps S31 to S34 can be omitted.
[0043]
In step S40, the program contents are displayed on the display 7 of the portable terminal 6 using the transferred image data, and the image data is stored in the memory of the portable terminal 6. Thus, a series of image transfer is performed. The operation is completed.
[0044]
The embodiment described so far is an example in which a transfer image is displayed on the display 7 of the mobile terminal 6, but the present invention is not limited to this, and for example, a video provided on the mobile terminal 6 as shown in FIG. By connecting the output from the output terminal to the video input terminal of the car TV 10 via the wired transmission line d, the data transferred by the large TV screen 11 can be viewed and the IRD device 1 can be viewed from the portable terminal 6 side. It is possible to use the operation button unit 12 provided on the car television 10 in place of the operation key unit 8 necessary for controlling the operation, and to use both the operation key unit 8 and the operation button unit 12 for a control command. You can also.
[0045]
The broadcasting in the IRD system in each of the above embodiments is an example in which a signal of a pay television program broadcast is transmitted from a broadcasting satellite. The transmission may be performed using a wired transmission line such as a line or an optical transmission line, and the recording is performed on the hard disk 2 provided in the IRD device 1. Or an optical disk drive using a CD-R, CD-RW, DVD-RAM, DVD-R, or DVD-RW that can record on a recording medium such as an optical disk or the like. .
[0046]
Further, the data of the format of the image display unit stored in the ID data memory 4 of the IRD device 1 may be composed of data corresponding to the number of pixels of the image display unit of the communication terminal, or may include a model name of the communication terminal. The recording information distribution function unit or the real-time distribution function unit of the IRD device 1 may be configured in a signal format in which the distribution image quality is changed in a plurality of stages in accordance with the ID data of the portable terminal 6. You may comprise so that distribution may be possible.
[0047]
Further, the destinations distributed from the IRD device 1 are the mobile terminal 6 and the car television 10 which are transferred using a wireless line, but the distributed television programs are distributed to the communication terminals using a wired line. Of course, it may be constituted.
[0048]
As described above, the configuration and operation of the preferred embodiment of the television receiving system, the television receiving apparatus, and the portable terminal according to the present invention have been described in detail. However, such an embodiment is merely an example of the present invention, and does not limit the present invention in any way. It will be readily apparent to those skilled in the art that various modifications and changes can be made in accordance with the particular application without departing from the spirit of the invention.
[0049]
【The invention's effect】
As is apparent from the above description, the television receiving system, the television receiving apparatus, and the portable terminal according to the present invention move a program broadcast using the television receiving system away from the installation location of the monitor TV connected to the IRD apparatus. At the time of viewing at a place, there is a remarkable effect that the user can view the program in real time and can view the already broadcasted program later on the broadcast date or time.
[Brief description of the drawings]
FIG. 1 is a block circuit diagram showing an overall configuration of an image transfer device of an IRD system according to an embodiment of the present invention and a change of a display screen displayed on a display of a mobile terminal.
FIG. 2 is a flowchart for explaining the first half operation of the image transfer device of the IRD system shown in FIG. 1;
FIG. 3 is a flowchart for explaining an intermediate operation of the image transfer device of the IRD system shown in FIG. 1;
FIG. 4 is a flowchart for explaining the latter half operation of the image transfer device of the IRD system shown in FIG. 1;
FIG. 5 is a block circuit diagram showing a schematic configuration of an image transfer device of an IRD system according to another embodiment of the present invention.
FIG. 6 is a block circuit diagram showing an example of a conventional IRD system with a recording function.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 IRD apparatus 2 Hard disk 3 MPEG4 encoder 4 ID data memory 5 Receiving antenna 6 Portable terminal 7 Display 7-1 ID input request screen 7-2 Corresponding model list screen 7-3 Reproduction source selection screen 7-4 Program selection screen 7-5 Program content screen 7-6 Image quality selection screen 8 Operation key section 9 Exchange radio station 10 Car TV 11 TV screen 12 Operation button section

Claims (6)

A television receiving device that receives a television broadcast signal, reproduces the output, or performs a recording process,
A mobile terminal connected to the television receiver via a communication line,
A television receiving system comprising:
The television receiver,
A communication unit connected to the mobile terminal via a communication line,
An image quality determining unit that determines an image quality to be transmitted to the mobile terminal;
An encoding unit that encodes a received or recorded television broadcast based on the determination result of the image quality determination unit,
A transmitting unit that transmits the television broadcast signal encoded by the encoding unit via the communication unit,
With
The mobile terminal,
A transmission request unit for requesting transmission of a television broadcast signal;
An image quality information transmitting unit for transmitting image quality information determined by the image quality determining unit,
A decoding unit that decodes the encoded television broadcast signal received from the television receiver,
A display unit that displays the television broadcast signal decoded by the decoding unit;
With
The television receiver is configured to determine an image quality to be transmitted based on image quality information received from the mobile terminal based on a transmission request for a television broadcast signal from a mobile terminal connected via the communication line, and to determine the determined image quality. Based on the received TV broadcast signal encoded and transmitted to the mobile terminal,
The mobile terminal decodes and displays the encoded television broadcast signal received from the television receiver,
A television receiving system, characterized in that: The image quality information transmitted from the image information transmitting unit of the portable terminal is a telephone number transmitted when the television receiver is connected via a communication line, or is input to specify the portable terminal. ID data,
The television receiver,
The portable terminal and a portable terminal display unit correspondence table showing the correspondence of the display capability of the display unit,
A telephone number obtained when connected to the mobile terminal via a communication line, or ID data transmitted from the mobile terminal, and specifying the display capability of the mobile terminal from the mobile terminal display unit correspondence table, The image quality determination unit automatically determines the image quality to be transmitted to the mobile terminal based on the specified display capability,
The television receiving system according to claim 1, wherein: A television receiver that receives a television broadcast, reproduces the output, or performs a recording process,
A communication unit connected to the mobile terminal via a communication line,
An image quality determining unit that determines an image quality to be transmitted to the mobile terminal;
An encoding unit that encodes the received or recorded television broadcast signal based on the determination result of the image quality determination unit,
A transmitting unit that transmits the television broadcast signal encoded by the encoding unit via the communication unit,
With
The image quality to be transmitted is determined based on the image quality information received from the mobile terminal based on a transmission request of a television broadcast signal from the mobile terminal connected via the communication line, and the television broadcast received based on the determined image quality Encoding a signal and transmitting it to the mobile terminal;
A television receiver characterized by the above-mentioned. The portable terminal and a portable terminal display unit correspondence table showing the correspondence of the display capability of the display unit,
A telephone number obtained when connected to the mobile terminal via a communication line, or ID data transmitted from the mobile terminal, and specifying the display capability of the mobile terminal from the mobile terminal display unit correspondence table, The image quality determination unit automatically determines the image quality to be transmitted to the mobile terminal based on the specified display capability,
The television receiver according to claim 3, wherein: A mobile terminal connected to the television receiver via a communication line,
A transmission requesting unit that requests the television receiver to transmit a television broadcast signal,
An image quality information transmission unit for transmitting image quality information;
A decoding unit for decoding the encoded television broadcast signal received from the television receiver,
A display unit that displays the television broadcast signal decoded by the decoding unit;
A mobile terminal comprising: The image quality information transmitted from the image information transmission unit of the portable terminal is:
A telephone number transmitted when connected to the television receiver via a communication line, or ID data input to identify the mobile terminal;
The mobile terminal according to claim 5, wherein:

Images