JP2001257963A - Television receiver and adapter unit for receiving digital broadcasting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that a received and tuned video signal format can not be reproduced and displayed when the reproducible video signal format of a television receiver having a D terminal is not matched with that of a receiving adapter. SOLUTION: This invention comprises a television receiver 11 having a D terminal 13 for inputting a received and tuned digital video signal, a digital signal processing part 12 for generating a video signal for display by demodulating and reproducing the video signal supplied from the D terminal and a storage and communication part 15 capable of storing and transferring the video signal format conditions capable of demodulating and reproducing processing and a digital adapter unit 21 having a D terminal 24 for outputting the received and tuned digital video signal, a receiving and storage part 25 for receiving and storing the video signal format condition transferred from the storage and communication part and a format conversion means for converting the received and tuned digital video signal format to a video format capable of demodulation and reproduction on the basis of the video signal format condition stored in the receiving and storage part when this format is any format except for a demodulating and reproducing target and for outputting the converted signal through the output terminal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital broadcast receiving television receiver and an adapter device capable of receiving and reproducing digital broadcast video signals having a plurality of video signal formats.

[0002]

2. Description of the Related Art In recent years, from the current analog signal broadcasting system to a digital signal broadcasting system, studies have been made to improve the image quality and the number of channels of a television broadcast, and development for practical use has been promoted.

[0003] In Japan, satellite (BS) digital broadcasting starting from 2000 and subsequent terrestrial digital broadcasting are also planned. To put this digital television broadcast into practical use, the Electronic Industries Association of Japan (EIAJ) decided to promote the spread of current television receivers in December 1998 by simply using a single cable to transmit video signals from a digital broadcast receiving adapter. Can be connected to a TV receiver, and high quality image is achieved by connecting component video.
By transmitting a control signal, a new terminal called a D terminal has been established so that the scanning frequency and the aspect ratio can be switched smoothly and reliably.

[0004] The video signal formats of digital broadcasting that are currently being considered for practical use are 480i, 480p, 1
080i, 720p, 1080p and the like. The three or four digits of this video signal format represent the number of scanning lines, and the letter i is an intercarrier system, p
Indicates a progressive system. That is, 480i
Is to alternately transmit a video signal of 240 odd scanning lines and a video signal of 240 even scanning lines, and reproduce and display the transmitted video signal of each odd and even scanning line.
For example, when reproducing and displaying 60 images per second, 30 images / second are displayed for each of the odd and even scanning lines, for a total of 60 images / second. On the other hand, 480p transmits an image composed of 480 scanning lines at a rate of 60 frames / second, and reproduces and displays a video signal of the transmitted 480 scanning lines.
0i, it is possible to reproduce and display a superior image quality.

[0005] It is the D terminal that has established the specification category of cables and connectors for transmitting a plurality of video signal formats. The D terminals are classified as shown in Table 1.

[0006]

[Table 1] As shown in Table 1, the terminal display D1 indicates a terminal capable of transmitting and receiving only the digital broadcast signal of the video signal format 480i, and the terminal display D2 can transmit and receive both digital broadcast signals of the video signal formats 480i and 480p. The terminals are shown. Other terminal indications D3 to D5
Indicates terminals capable of transmitting and receiving digital broadcast signals of the video signal formats shown in Table 1.

Next, the relationship between transmission and reception of digital video signals and reproduced images between the digital broadcast receiving adapter using the D terminal and a television receiver having a digital broadcast reproducing function will be described with reference to FIGS.
This will be described with reference to FIG.

[0008] Even if digital broadcasting is started, current analog broadcasting coexists. Therefore, a television receiver with a digital broadcast playback function (hereinafter, simply referred to as a TV with a D terminal) 31 in which a function of receiving and playing back a digital broadcast video signal is added to a television receiver that receives and plays back an existing analog broadcast, and a digital broadcast reception adapter ( (Hereinafter, simply referred to as an adapter) 32. The television 31 with a D terminal is a television having an input D terminal and a function of processing a digital video signal supplied from the input D terminal and displaying a video screen on a display means such as a cathode ray tube. The adapter 32 has an output D terminal, receives and selects a digital broadcast signal, and outputs a digital video signal selected and received from the output D terminal. This TV with D terminal 31
Is connected between the input D terminal provided at the connector and the output D terminal of the adapter 32 by a D terminal cable 33 in which a connector fitted to the D terminal is connected to both ends of a cable for transmitting a digital video signal. ing.

In the digital broadcast receiving apparatus having such a configuration, for example, it is assumed that the television 31 with a D terminal is provided with a function capable of reproducing digital video signal formats 480i and 480p and a D2 terminal as an input terminal.
An adapter 32 is provided for the television 31 with the D2 terminal.
Also, assuming that the digital video signal formats 480i and 480p have a function of receiving and selecting a channel and the output terminal has a D2 terminal, any video signal of the video signal format 480i or 480p selected and received by the adapter 32 can be used. The video signal is supplied to the television 31 with a D2 terminal via the D terminal cable 33, and both video screens of the video signal formats 480i and 480p are reproduced and displayed.

On the other hand, digital broadcasting of all the above-mentioned video signal formats is not started at the same time,
And D5 format are likely to start broadcasting several years later. For this reason, the TV 3 with D terminal for the time being
1 may have only a D2 terminal capable of receiving and reproducing the video signal formats 480i and 480p. Also,
The adapter 32 has video signal formats 480i, 480p and 1080i according to the start of digital broadcasting.
The adapter 32 having a function of receiving and selecting a channel corresponding to D3 is put to practical use.

As described above, when a digital broadcast video signal is received and tuned to the television 31 with a D terminal compatible with D2 in combination with the adapter 32 compatible with D3, the digital broadcast video signal in the D2 format is tuned. When the video signal is reproduced and displayed on the television 31 with a D terminal, as shown in FIG. 8A, the video in both the 480i and 480p video signal formats is reproduced. That is, the television 31 with the D2 terminal
Can reproduce and display the video of the video signal format of both terminals D1 and D2.

[0012] However, the adapter 32 described above uses the video signal formats 480i, 480p and 1080i.
Can be selected and the output terminal has a D3 terminal. Therefore, it is possible to receive and select a video signal of the video signal format 1080i. From the output D3 terminal, the video signal of the video signal format 1080i can be selected. The video signal may be output and supplied to the television 31 with a D terminal having the above-mentioned input D2 terminal. In this case, since the television 31 with a D terminal can only process a video signal format that can be supported by the input D2 terminal, a non-screen state occurs in which no reproduced video is reproduced and displayed as shown in FIG. 8B. .

The television 31 with a D terminal is a television capable of displaying two screens, and the target video signal format displayed on the two screens is the format 480i of the D1 terminal.
When only digital video of the format 480i is received and selected by the adapter 32,
As shown in FIG. 9A, the video signal of the format 480i corresponding to the D1 terminal is reproduced and displayed. When the adapter 32 receives and selects D2 or D3 corresponding to the format 480p or 1080i, the television 31 with the D terminal is selected. During the two-screen display, since only the D1 terminal is supported, a non-screen state results.

[0014]

A television 31 having a function capable of reproducing and displaying digital broadcast video signals in various video signal formats, a digital broadcast reproducing function having a D terminal to which the digital broadcast video signal is input, and various video signals A digital broadcast receiving adapter 32 having a function of receiving and selecting a digital broadcast video signal in a format and a D terminal for outputting the digital video signal selected and received, and
In a digital broadcast video signal receiving / reproducing apparatus comprising a D terminal cable 33 for connecting the input D terminal and the output D terminal, a video signal higher than a video signal format that can be reproduced by the television 31 with digital broadcast reproduction function When a digital broadcast receiving adapter 32 capable of receiving and selecting a format is connected with the D terminal cable 33,
There is a problem that a digital broadcast video signal having a higher video signal format than the reproduction function of the television 31 with the digital broadcast reproduction function selected and received by the digital broadcast reception adapter 32 cannot be reproduced and displayed.

A television 3 with a digital broadcast reproduction function
1 has a function capable of displaying two screens, and if the video signal format displayed on the two screens is only the lowest video signal format, the video signal format other than the two-screen display target video signal format Video signal is 2
There was a problem that could not be displayed on the screen.

Thus, the user can use the television 31 with digital broadcast reproduction function or the digital broadcast reception adapter 3
There is also a risk of erroneously determining that any one of the failures 2 has occurred.

When the user recognizes that there is a difference in the reproducible video signal format between the television 31 with digital broadcast reproduction function and the digital broadcast receiving adapter 32, every time the digital broadcast is received, Since the digital broadcast receiving adapter 32 is manually operated to convert a video signal format corresponding to the television 31 with a digital broadcast playback function, the format conversion operation is complicated and the usability is degraded.

SUMMARY OF THE INVENTION In view of the conventional problems, the present invention provides a video signal received and tuned by a digital broadcast receiving adapter having a function of receiving and selecting a video signal format other than a reproducible video signal format of a television with a digital broadcast playback function. It is an object of the present invention to provide a digital broadcast receiving television receiver and an adapter device capable of reproducing and displaying a digital broadcast.

[0019]

According to the present invention, there is provided a television receiver for receiving a digital broadcast, comprising: a plurality of video signals received by a digital broadcast receiving adapter in a television receiver for displaying a video screen based on a digital broadcast video signal; Means for connecting a cable for transmitting a digital broadcast video signal in a format, and a digital signal for generating a display video signal by demodulating and reproducing digital video signals of a plurality of video signal formats input to the connector means Processing means for storing a plurality of digital broadcast video signal format conditions that can be demodulated and reproduced by driving and controlling the digital signal processing means, and storing the stored video signal formats in a digital broadcast receiving adapter; Communication means, and a display image demodulated and reproduced by the digital signal processing means. Characterized by comprising a display means for displaying images at issue groups.

Further, the digital broadcast receiving adapter device of the present invention comprises a receiving channel selecting means for receiving and selecting a digital broadcasting signal having a plurality of video signal formats, and a digital broadcast receiving and selecting by the receiving channel selecting means. Connector means to which a cable for outputting a video signal to the television receiver is connected, and a demodulated and reproducible digital broadcast video signal format condition transferred from the television receiver are received, and the received video signal format is read and stored. Receiving the digital broadcast in a video signal format that is not subject to demodulation and reproduction by the television receiver, based on a reception storage means and a digital broadcast video signal format condition capable of demodulation and reproduction of the television receiver stored in the reception storage means; When receiving and tuning by the tuning means, the video signal format is converted and output from the connector means. Characterized by comprising a format converting means for.

Further, a digital broadcast receiving television receiver according to the present invention comprises: a receiving channel selecting unit for receiving and selecting a digital broadcasting signal having a plurality of video signal formats; Cable connector means for supplying a broadcast video signal, and digital signal processing means for demodulating and reproducing digital broadcast video signals of a plurality of video signal formats supplied through the cable connector means to generate a display video signal A storage communication unit that stores a plurality of digital broadcast video signal format conditions that can be demodulated and reproduced by driving and controlling the digital signal processing unit, and that can transfer the stored video signal format conditions; Receiving the demodulated and reproducible digital broadcast video signal format conditions transferred from the communication means, Receiving and storing means for reading and storing the received video signal format, and a video signal of a digital broadcast received and tuned by the receiving and tuning means based on the demodulated and reproducible digital broadcast video signal format condition stored in the receiving and storing means. When the format is not a target for demodulation and reproduction, the video signal format outside the target is converted into a video format that can be demodulated and reproduced, and the format conversion means supplied through the cable connector means and the digital signal processing means demodulate. Display means for displaying an image based on the display video signal subjected to the reproduction processing.

Note that the transfer of the video signal format condition between the storage communication means and the reception storage means of the digital broadcast receiving television receiver or the adapter device of the present invention is performed either wirelessly or by wire. It is characterized by.

Also, when the format conversion means of the digital broadcast receiving television receiver or the adapter device of the present invention converts the format of the video signal, the video signal transferred from the storage communication means and stored in the reception storage means. It is characterized in that it is converted into a video signal format having the highest video quality among the formats.

Further, the television receiver or the adapter device for digital broadcast reception of the present invention is stored in the storage communication means when displaying images on a multi-screen by the display means of the television receiver, and the reception storage The format conversion unit converts the format of the digital broadcast video signal received and selected by the format conversion unit based on the format conditions of the video signal for multi-screen display transferred to the unit.

Still further, in the digital broadcast receiving television receiver of the present invention, a reception selecting means for receiving and selecting a digital broadcast signal having a plurality of video signal formats, and receiving and selecting by the reception selecting means. Cable connector means for supplying a digital broadcast video signal, and digital signal processing for generating a display video signal by demodulating and reproducing digital broadcast video signals of a plurality of video signal formats supplied via the cable connector means Means for storing a plurality of digital broadcast video signal format conditions which can be demodulated and reproduced by controlling the digital signal processing means, and a demodulated and reproducible digital broadcast video signal format stored in the storage means Using conditions,
When the video signal format of the digital broadcast received and tuned by the reception tuning means is out of the demodulation and reproduction target by the digital signal processing means, the non-target video signal format is converted into a video format that can be demodulated and reproduced, Format conversion means to be supplied via the cable connector means, and display means for displaying an image based on the display video signal demodulated and reproduced by the digital signal processing means,
The receiving channel selecting means, the format converting means, and the cable connector means are incorporated.

According to the present invention, a digital broadcast receiving television receiver can always transfer a digital video signal format condition that can be played back to a digital broadcast receiving adapter device. Under the corresponding conditions, the digital broadcast receiving adapter device should automatically convert the digital broadcast signal into a digital video signal format video signal that can be played back on the digital broadcast receiving television receiver and supply it to the television receiver. In this way, it is possible to eliminate the no-screen due to the difference in the video format, and when displaying multiple screens of two or more screens, the adapter device automatically converts to a video signal format that can be displayed on multiple screens. It is now possible to eliminate a blank screen when displaying multiple screens.

[0027]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an embodiment of a digital broadcast receiving television receiver and an adapter device according to the present invention, and FIG. 2 explains the operation of the digital broadcast receiving television receiver according to the present invention. FIG. 3 is a flowchart illustrating the operation of the digital broadcast receiving adapter device according to the present invention, and FIG. 4 is a diagram illustrating a screen state reproduced and displayed on one screen by the digital broadcast receiving television receiver according to the present invention. FIG. 5 is an explanatory diagram for explaining a screen state in which two screens are reproduced and displayed on the digital broadcast receiving television receiver according to the present invention.

First, the configuration of the digital broadcast receiving television receiver and the adapter device of the present invention will be described with reference to FIG. TV receiver with digital broadcast playback function
A digital signal processing unit 12, an input D terminal 13 to which a digital video signal supplied to the digital signal processing unit 12 is input, and a digital signal processing unit 12.
A cathode-ray tube 14 for displaying a video screen based on the video signal processed by the digital signal processing unit 12 and performing video signal processing control according to a digital video signal format when the digital signal processing unit 12 performs signal processing It comprises a D terminal specification data / communication function microcomputer (hereinafter simply referred to as a television microcomputer) 15 having data and a communication terminal 16 connected to the television microcomputer 15.

The digital signal processing section 12 analyzes various data such as luminance, color and synchronization constituting the video signal in accordance with the video signal format corresponding to the digital video signal supplied to the input D terminal 13. A video screen signal to be read and reproduced and displayed on the CRT 14 is generated. The analysis and reading of the digital video signal in the digital signal processing unit 12 is driven and controlled based on the video signal format information stored in advance in the television microcomputer 15 to generate a video screen signal.

That is, the digital video signal supplied to the digital signal processing unit 12 via the input D terminal 13 is subjected to format determination based on the TV microcomputer 15 and the TV microcomputer 15 performs the format determination in accordance with the determined format. The video signal is decoded under the control of the microcomputer 15, and the luminance, color and synchronization signals corresponding to the format are generated.
The picture tube is displayed by driving the cathode ray tube 14 based on the luminance, color and synchronization signal.

Further, the television microcomputer 15 has a function of transmitting, via a communication terminal 16, video signal format specification information that can be reproduced by the television 11 with a D terminal to a digital broadcast receiving adapter 21 described later. ing.

Next, a digital broadcast receiving adapter (hereinafter, simply referred to as a digital adapter) 21 includes a digital signal input terminal 22 to which a digital broadcast signal received by an antenna or the like is supplied and input, and a digital signal input terminal 22.
A format conversion processing unit 23 for converting the format of the digital video signal supplied to the input terminal, an output D terminal 24 for outputting the digital video signal subjected to the format conversion by the format conversion processing unit 23, and the format conversion processing unit 23 A microcomputer having a D terminal specification data read / communication function (hereinafter, simply referred to as an adapter microcomputer) 25 for controlling the drive of the controller microcomputer 25 and a communication terminal 26 provided on the adapter microcomputer 25.

It should be noted that the input D of the television 11 with a D terminal
Terminal 13 and the output D terminal 2 of the digital adapter 21
4, a video signal cable 28 corresponding to the D terminal is connected.

The format conversion section 23 converts the video signal format of the digital broadcast signal supplied and input from the digital signal input terminal 22 under the control of the adapter microcomputer 25. A communication terminal 26 of the adapter microcomputer 25 and a communication terminal 16 of the TV microcomputer 15 are connected via a data transmission line 17, and the TV microcomputer 15 transmits the stored processable video signal format specification data to the adapter. The adapter microcomputer 25 has a function of reading and storing the video signal format specification data transferred from the television microcomputer 15.

That is, this digital adapter 21
The adapter has a function of receiving and selecting a digital video signal format inherent in the adapter, and a function of performing format conversion processing based on video signal format information data that can be reproduced and transferred from the television 11 with a D terminal.

The data transmission is performed via a data transmission line 17 connected to the communication terminals 16 and 26 of the television microcomputer 15 and the adapter microcomputer 25. This data transmission is performed by an I ² C bus, IEEE 1394 or the like. This is performed using various data transmission methods. Alternatively, this data transmission is performed by wire using a variety of bus lines and wirelessly using infrared rays or radio waves.

Next, the operation of the television 11 with a D terminal having such a configuration will be described with reference to FIG. Note that the television 11 with a D terminal is compatible with the D2 video signal format 480.
i and 480p can be reproduced, and the television has a function that can be displayed only when the two-screen display is the video signal format 480i of D1.

In the first step S11, a reproduction display screen is selected by using a reproduction display screen selection function (not shown) of the television 11 with a D terminal, and the selected reproduction display screen is determined by one screen or by the television microcomputer 15. I do. As a result of the determination in step S11, if the selected reproduction display screen is determined to be one screen, the specification data of the D2 video signal formats 480i and 480p stored in the television microcomputer 15 and stored in the TV microcomputer 15 are set in step S12. . As a result of the determination in step S11, if it is determined that the selected playback display screen is two screens, the D1 video signal format 480i stored in the television microcomputer 15 and capable of playback display during two-screen playback display is stored in step S13. Set the specification data of.

The specification data of D2 or D1 set in either step S12 or S13 is transferred to the adapter microcomputer 25 of the digital adapter 21 using the communication terminal 16 and the data transmission line 17 in step S14.

That is, when the screen format (one screen or two screens) to be reproduced and displayed on the television 11 with the D terminal is selected, the format specification data of the digital video signal reproducible by the television 11 with the D terminal is transmitted to the digital adapter 21. Transfer to

Next, referring to FIG.
Operation 1 will be described with reference to FIG. Step S2
In step 1, it is determined whether the selection of the reproduction display screen transferred from the television 11 with the D terminal is one screen. As a result of the determination in step S21, when it is determined that the reproduction display of one screen is selected, the specification data of the digital video signal format D2 that can be reproduced and displayed on the television 11 with the D terminal is transferred and stored in the adapter microcomputer 25. Is done.

Next, in step S22, it is determined whether the digital broadcast video signal received and selected by the digital adapter 21 is in the D1 video signal format 480i. Is stopped, and the D1 format video signal selected for reception is output to the output D terminal 24 in step S26.
From the TV 1 with the D terminal via a video cable 28
1 input D terminal 12.

If it is determined in step S22 that the selected video signal is not in the D1 format, it is determined in step S23 whether a D2 format video signal has been received. If it is determined that the received video signal is in the D2 format, step S26 is performed. Output a D2 format video signal.

If it is determined in step S23 that the video signal selected for reception is not in the D2 format,
If it is determined that the video signal format is D3 other than D1 or D2, since the video signal format to be played back supplied from the television 11 with a D terminal is D2 in step S24, the output is performed in this D2 format. It is determined whether to do. As a result of the determination in step S24,
If it is determined that the video signal selected for reception is not output in the D2 format, the video signal is output from step S26 in the video signal format state selected for reception, and a blank screen is displayed on the television 11 with a D terminal.

If it is determined in step S24 that the output video signal format is set to D2, the drive of the format conversion processing unit 23 is controlled in step S25 to convert the video signal of format D3 to the D2 format and output from step S26. I do.

Thus, the digital adapter 21
The D1 format video signal determined as a D1 format video signal in step S22 and the D2 format video signal determined in step S23 as a D2 format video signal are output D.
Input D terminal 1 from terminal 24 via video signal cable 28
3 and processed by the digital signal processing unit 12 to reproduce and display the D1 format video signal on the CRT 14 as shown in FIG. 4A, and the D2 format video signal as shown in FIG. Will be displayed. In the step S24, the D3 format video signal
It is determined that the data is to be converted into the two formats, and step S25
The video signal converted from the format D3 to D2 by the format conversion processing unit 23 is supplied to the television 11 with a D terminal, and the D2 format-converted video signal is reproduced and displayed as shown in FIG. You.

In this case, the video signal received and tuned by the digital adapter 21 is converted from a high-quality video signal of the format D3 to a format D2 of slightly lower quality, and is reproduced and displayed. This allows the user to use D
Digital adapter 21 capable of receiving and selecting a digital broadcast having a higher video signal format than terminal-equipped television 11
, The digital adapter 21 can reproduce a digital broadcast that can be received and selected.

Next, when it is determined in step S21 that two-screen display is selected instead of one-screen display from the television 21 with a D terminal, in step S27, the digital broadcast signal received and selected by the digital adapter 21 is: It is determined whether the video signal is a D1 format video signal. If the format is determined to be D1, a D1 format video signal is output from step S26.

If it is determined in step S27 that the video signal is a video signal other than the D1 format, it is determined in step S28 whether the video signal format that can be processed by the television 11 with a D terminal for two screens is D1. As a result of the determination in step S28, the output video signal format is D
If it is determined to be 1, the drive of the format conversion processing section 23 is controlled, that is, the video signal of the D2 or D3 format is converted into the D1 format in step S29 and output from step S26. If it is determined in step S28 that the output format is not output in D1, the output is output from step S26 in the state of the video signal format selected and received, and the television 11 with a D terminal is output.
Then, a blank screen is displayed.

That is, as a result of the determination in step S27, if the video signal selected and received is in the D1 format, the D1 format video signal is displayed and reproduced on two screens as shown in FIG. 5A. If it is determined in step S27 that it is D2 or D3 other than the format D1, the video signal of the received and selected D2 format is converted into the D1 format, and the two screens as shown in FIG. 5B are reproduced and displayed. The video signal of the D3 format selected and received is converted into the D1 format, and two screens as shown in FIG. 5C are reproduced and displayed.

As a result, the video signal reproduced and displayed on the two screens is reproduced and displayed with a low image quality. Does not occur. Instead, it is possible to eliminate the absence of a screen as in the related art, and the two-screen function of the television 11 with a D terminal can also reproduce and display digital broadcast signals having different video signal formats.

In the above-described embodiment of the present invention, the television with D terminal 11 is capable of reproducing and displaying two screens.
It is also possible to use a television capable of displaying more than a single screen. In this case, it can be realized by converting the target video signal format into the format capable of multi-screen reproduction display.

In the above embodiment, The television with D terminal 11 and the digital adapter 21 are connected to the input D terminal 1
3 and an output D terminal 24 are provided.
Are connected by a video signal cable 28, and the TV microcomputer 15 and the adapter microcomputer 26 are connected to both communication terminals 16 and 26 by a data transmission line 17 for data transmission. When incorporated in the television 11 with a D terminal, at least the data transmission line 17 and the adapter microcomputer 25 are eliminated, and the format conversion processing unit 23 is directly used by using the D terminal information data stored in the television microcomputer 15. It is also possible to control the format conversion processing.

[0054]

The television receiver and the adapter device for digital broadcast reception of the present invention differ in the video signal format that can be received and reproduced by the television receiver and the adapter device. When reception of a higher-order video signal format than the possible video signal format is selectable, the video signal format conversion corresponding to the highest-order video signal format that can be processed by the television receiver is automatically performed. It is now possible to reproduce and display digital broadcast images that can be received and selected by the adapter device.

When a multi-screen display is performed by a television receiver, the adapter device automatically converts the video signal format into a video signal format that can be displayed on a multi-screen. Can be displayed on multiple screens.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of a digital broadcast receiving television receiver and an adapter device according to the present invention.

FIG. 2 is a flowchart for explaining the operation of the digital broadcast receiving television receiver according to the present invention.

FIG. 3 is a flowchart illustrating the operation of the digital broadcast receiving adapter device according to the present invention.

FIG. 4 is an explanatory view illustrating a video screen displayed on one screen by the digital broadcast receiving television receiver according to the present invention.

FIG. 5 is an explanatory diagram illustrating a video screen displayed on two screens by the digital broadcast receiving television receiver according to the present invention.

FIG. 6 is an explanatory diagram illustrating a conventional digital broadcast receiving television receiver and an adapter device.

FIG. 7 is an explanatory diagram for explaining a problem in displaying a video screen received and reproduced by a conventional digital broadcast receiving television receiver and an adapter device on one screen.

FIG. 8 is an explanatory diagram for explaining a problem when displaying a video screen received and reproduced by a conventional digital broadcast receiving television receiver and an adapter device in two screens.

[Explanation of symbols]

11: TV with digital broadcast playback function (TV with D terminal), 12: Digital signal processing unit, 13: Input D terminal, 14: CRT, 15: D terminal specification data / communication function built-in microcomputer, 16: Communication terminal, 17 ... Data transmission line, 21 ... Digital broadcast receiving adapter (digital adapter), 22 ... Digital signal input terminal, 23 ... Format conversion processing unit, 24 ... Output D terminal, 25 ... D terminal specification data read / communication microcomputer, 26 ... Communication terminal, 28 ... Video signal cable.

Claims (7)

[Claims] 1. A connector for connecting a cable for transmitting digital broadcast video signals of a plurality of video signal formats received by a digital broadcast receiving adapter in a television receiver for displaying a video screen based on a digital broadcast video signal. Digital signal processing means for demodulating and reproducing digital video signals of a plurality of video signal formats input to the connector means to generate a display video signal; and demodulating and reproducing by driving and controlling the digital signal processing means. Storage communication means for storing a plurality of processable digital broadcast video signal format conditions, and transferring the stored video signal format to a digital broadcast receiving adapter; and a display demodulated and reproduced by the digital signal processing means. Display means for displaying an image based on a video signal for use. Digital broadcast receiving TV receiver to be. 2. A receiving and selecting means for receiving and selecting a digital broadcast signal having a plurality of video signal formats, and a cable for outputting a digital broadcasting video signal received and selected by said receiving and selecting means to a television receiver. A receiving means for receiving a demodulated and reproducible digital broadcast video signal format condition transferred from the television receiver, reading and storing the received video signal format, and storing the received video signal format in the reception storage means. Based on the conditions of digital broadcast video signal format that can be demodulated and reproduced by the TV receiver,
When digital broadcasting of a video signal format not subject to demodulation and reproduction in the television receiver is selected by the reception tuning unit, the video signal format is converted, and the format conversion unit is output from the connector unit. An adapter device for receiving digital broadcasting, comprising: 3. A receiving and selecting means for receiving and selecting a digital broadcast signal having a plurality of video signal formats; a cable connector for supplying a digital broadcasting video signal received and selected by the receiving and selecting means; Digital signal processing means for demodulating and reproducing digital broadcast video signals of a plurality of video signal formats supplied through the cable connector means to generate a display video signal; and driving and controlling the digital signal processing means Storage communication means for storing a plurality of digital broadcast video signal format conditions that can be demodulated and reproduced, and capable of transferring the stored video signal format conditions; and demodulated and reproducible digital broadcast transferred from the storage communication means A receiving storage device that receives the video signal format condition and reads and stores the received video signal format. Based on the digital broadcast video signal format conditions that can be demodulated and played back stored in the reception storage means, when the video signal format of the digital broadcast received and tuned by the reception tuning means is out of the demodulation and playback target, Convert the video signal format that is not the target to a video format that can be demodulated and reproduced,
Digital broadcast reception, comprising: a format conversion unit supplied through the cable connector unit; and a display unit for displaying an image based on a display video signal demodulated and reproduced by the digital signal processing unit. TV receiver. 4. The image processing apparatus according to claim 1, wherein the transfer of the video signal format condition between the storage communication unit and the reception storage unit is performed wirelessly or by wire.
The television receiver or the adapter device for digital broadcast reception according to any one of the above. 5. A video having the highest video quality among video signal formats transferred from said storage and communication means and stored in said reception and storage means when said format conversion means converts the format of a video signal. 5. The television receiver or the adapter device for digital broadcast reception according to claim 2, wherein the television receiver or the adapter device converts the signal into a signal format. 6. A multi-screen display video signal format condition which is stored in said storage communication means and transferred to said reception storage means when a video is displayed on a multi-screen by said display means. 5. The television receiver or the adapter device for digital broadcast reception according to claim 2, wherein a format conversion of the digital broadcast video signal selected and received by the conversion unit is performed. 7. A receiving and selecting means for receiving and selecting a digital broadcast signal having a plurality of video signal formats, a cable connector means for supplying a digital broadcasting video signal received and selected by the receiving and selecting means, Digital signal processing means for demodulating and reproducing digital broadcast video signals of a plurality of video signal formats supplied through the cable connector means to generate a display video signal; and driving and controlling the digital signal processing means Storage means for storing a plurality of digital broadcast video signal format conditions capable of demodulation and reproduction processing; and reception selection by the reception tuning means using the demodulation and reproduction digital broadcast video signal format conditions stored in the storage means. When the video signal format of the broadcast digital broadcast is out of the demodulation and reproduction target by the digital signal processing means, A format conversion unit that converts a non-target video signal format into a video format that can be demodulated and reproduced, and supplies the video signal format via the cable connector unit, based on a display video signal demodulated and reproduced by the digital signal processing unit. And a display means for displaying an image. The television receiver for digital broadcast reception, comprising: the reception tuning means, the format conversion means, and the cable connector means.