WO2000022817A1 - Commutateur pour signaux video composants - Google Patents

Commutateur pour signaux video composants Download PDF

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Publication number
WO2000022817A1
WO2000022817A1 PCT/JP1999/005591 JP9905591W WO0022817A1 WO 2000022817 A1 WO2000022817 A1 WO 2000022817A1 JP 9905591 W JP9905591 W JP 9905591W WO 0022817 A1 WO0022817 A1 WO 0022817A1
Authority
WO
WIPO (PCT)
Prior art keywords
video signal
component video
switching device
signal
component
Prior art date
Application number
PCT/JP1999/005591
Other languages
English (en)
Japanese (ja)
Inventor
Toyoaki Unemura
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Priority to CA002314977A priority Critical patent/CA2314977A1/fr
Publication of WO2000022817A1 publication Critical patent/WO2000022817A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440263—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA
    • H04N21/440272—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA for performing aspect ratio conversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/47—End-user applications
    • H04N21/485—End-user interface for client configuration
    • H04N21/4858—End-user interface for client configuration for modifying screen layout parameters, e.g. fonts, size of the windows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems

Definitions

  • This invention switches a plurality of component video signals input to a display device such as a television receiver, and causes a video to be displayed on the display device.
  • the present invention relates to a component video signal switching device.
  • FIG. 28 shows a schematic configuration of a conventional component video signal switching device incorporated in a television receiver such as a hi-vision.
  • the conventional component video signal switching device V sc consists of an input terminal 1, NTSC color difference signal demodulator 2, image signal switch 3, sink separator 4, RGB processor 5, It has a display 6.
  • Input terminal 1 has an external typified by an STB (set-top-box) for digital television and a DVD (digital-video-disk) player.
  • the first component video signal Sc V1 including the luminance signal Y, color difference signal ⁇ ⁇ , and color difference signal PR output from the video / audio data source It is done.
  • the input terminal 1 outputs the luminance signal Y, the color difference signal ⁇ ⁇ , and the color difference signal PR included in the first component video signal S cvl to the image signal switch.
  • the NTSC color difference signal demodulator 2 includes a luminance signal Y and a chroma signal which are obtained based on a composite video signal of various TV standard systems (in this example, NTSC system).
  • Each of the generated luminance signal Y, color difference signal U, and color difference signal V of the second component video signal S cv 2 is output to the image signal switch 3.
  • the luminance signal Y and chroma signal C input to the NTSC chrominance signal demodulator 2 are, for example, converted from an NTSC composite video signal by a YZC separator (not shown). / C Decoupled output, or obtained from the so-called S terminal output of a video tape recorder.
  • the image signal switch 3 includes a first component video signal S cvl (Y, PB, PR) input from the input terminal 1 and a first component video signal S cvl (Y, PB, PR) input from the NTSC color difference signal demodulator 2. 2 component video signal Sc V 2 (Y, U, V). The selection of the component video signal by the image signal switch 3 is performed based on a selection signal Sw input from the outside.
  • the sync separator 4 is composed of a sync separation circuit, and outputs the first component video signal Sc V1 or the first component video signal output from the image signal switch 3.
  • the horizontal sync signal H — SYNC and the vertical sync signal V — SYNC are separated and extracted from the luminance signal Y included in the component video signal Sc V2 of No. 2 and output.
  • the RGB processor 5 is composed of an RGB demodulation circuit, and outputs a first component video signal S cvl (Y, PB, PR, or a second component video signal S cv 2 ( YU, V) are demodulated and output as the original R, G, B color signals.
  • Display 6 is input from RGB processor 5
  • An image is displayed based on the R, G, and B color signals.
  • the user operates a remote control (not shown) to give a selection signal Sw as a command to the image signal switch 3. Based on the selection signal Sw of the second component video signal S c V 1 and the second component video signal S c V 2.
  • RG RG
  • An external component video signal source such as a television STB or DVD player (hereinafter referred to as an “external component video signal source”)
  • the image signal switching unit 3 When the signal is input to the input terminal 1, the image signal switching unit 3 outputs the first component video signal Sc V 1 input from the input terminal 1 based on the selection signal Sw. Output .
  • the image signal switch 3 outputs the second component video signal SCV2 input from the NTSSC color difference decoding 2 based on the selection signal sw. R via image signal switch 3
  • the first component video signal S c V1 or the second component video signal input to GB The luminance signal Y included in S cv 2 is input to the sink separator 4.
  • the sync separator overnight 4 separates and extracts the horizontal synchronizing signal H—SYNC and the vertical synchronizing signal V—SYNC from the input luminance signal Y.
  • the extracted synchronizing signals H-SYNC and V-SYNC are output to a deflector (not shown) in the display 6.
  • the RGB processor 5 has a first component video signal ScV1 (Y, PB, PR) input from the image signal switch 3. Demodulates the second component video signal ScV2 (Y, U, V) into the original R, G, B color signals. These demodulated color signals are output to the display 6.
  • the display 6 can display a color image.
  • the above-mentioned input terminal 1 is conventionally provided as a component video input terminal only in a television for high-vision reception. .
  • these component video input terminals are connected to high-spread signals originally of a span. However, the frequency of actual use was low.
  • the present invention uses different components from multiple external component video signal sources such as digital TV STBs and DVD players that are video signal sources.
  • external component video signal sources such as digital TV STBs and DVD players that are video signal sources.
  • one remote control can be used to switch the input source of the TV, and to switch the external component video signal source. It is an object of the present invention to provide a component video signal switching device capable of performing channel selection. Disclosure of invention
  • the present invention has the following features in order to achieve the above objectives.
  • the first aspect of the present invention is a single remote control for a first externally provided signal source and a second internally provided signal source.
  • a first component video signal input from a first input device connected to the first signal source and a second signal source based on a command to be transmitted;
  • a component video signal switching device for switching between a second component video signal input from the second component video signal and displaying an image on a display device;
  • a component video signal selector for selectively outputting any one of the second component video signal to the display device;
  • a command receiver for receiving commands, and
  • Component video comprising a controller for controlling the component video signal with a minimum number of commands.
  • Signal switching device
  • one remote control disconnects the component video signals from the external signal source and the internal signal source. Can be replaced.
  • the controller detects an aspect ratio of an image carried by the selected component video signal. Outgoing aspect ratio detector,
  • the image is corrected even when switching between component video signals having different aspect ratios.
  • the controller determines a connection state between the first input device and the first component video signal source.
  • the selector is controlled so as to select the second component video signal.
  • the controller detects an aspect ratio of an image carried by the selected component video signal. Includes aspect ratio detector,
  • connection discriminator detects a disconnection
  • controller controls the selector to select the second component video signal and performs the detection.
  • the display device is characterized in that one of the vertical and horizontal deflection angles of the display device is adjusted based on the obtained aspect ratio to display an image properly.
  • the controller is based on a horizontal synchronization signal and a vertical synchronization signal included in the first component video signal.
  • a component video signal discriminator for determining whether the first component video signal is valid or invalid;
  • the selector is controlled to select the second component video signal.
  • the controller is configured to detect an aspect ratio of an image carried by the selected component video signal. If it is determined that the component video signal discriminator further includes a ratio detector and the component video signal discriminator is invalid, the selector may be controlled to select the second component video signal.
  • the present invention is characterized in that one of the vertical and horizontal deflection angles of the display device is adjusted based on the detected aspect ratio, so that an image is displayed properly.
  • the controller is configured to, based on the horizontal synchronization signal and the vertical synchronization signal included in the first component video signal, perform the first step.
  • a component video signal discriminator that determines whether the component video signal is valid or invalid;
  • the controller detects an aspect ratio of an image carried by the selected component video signal. If the component video signal discriminator further includes a ratio detector and is determined to be invalid, even if the connection discriminator detects a connection, the second component Control the selector to select the video signal and adjust either the vertical or horizontal deflection angle of the display device based on the detected aspect ratio. It is characterized in that an image is displayed properly.
  • a ninth aspect of the present invention is the component according to the first aspect, further comprising a selection suppressor that suppresses control of a selector based on a received command.
  • Video signal switching device
  • one remote control can disable the function of switching the component video signals of the external signal source and the internal signal source.
  • the controller Is characterized by including a first message display that outputs a first message according to the result of the connection state discrimination by the connection discriminator. .
  • the controller outputs a second message according to a result of the connection state discrimination by the connection discriminator.
  • a second message indicator is included.
  • the first component video signal is correctly input. Otherwise, if the first component video signal is selected, the user will not be prompted by the message to have the correct first component, but a bad connection.
  • the second aspect of the present invention that can recognize that no video signal has been input is the controller and command reception in the first aspect.
  • the controller controls the selector to select one of the component video signals, the second component that drives the entire component video signal switching device.
  • a power supply is further provided to reduce power consumption when switching of component video signals is not required.
  • the first signal source is a set-top box, and the second signal source is an NTSC broadcast wave. It is characterized by something.
  • the remote component executes a command related to the first and second component video signals. The feature is that it is stored.
  • a fifteenth aspect of the present invention is a signal image display device in which the component video signal switching device according to the first aspect is incorporated.
  • the sixteenth aspect of the present invention relates to one remote control for the externally provided first signal source and the internally provided second signal source.
  • the related A component video signal switching method comprising a selection step for selecting a person judged to be relevant in the judgment step.
  • one remote control disconnects a component video signal from an external signal source and an internal signal source. Can be replaced.
  • FIG. 1 is a block diagram showing a configuration of a component video signal switching device according to a first embodiment of the present invention.
  • FIG. 2 is a block diagram showing a detailed configuration of the controller shown in FIG.
  • FIG. 3 is a flowchart showing the main operation of the component video signal switching device shown in FIG.
  • FIG. 4 is a flowchart showing a detailed operation of the STB key processing subroutine shown in FIG.
  • FIG. 5 is a block diagram showing a configuration of a component video signal switching device according to the second embodiment of the present invention.
  • FIG. 6 is a flowchart showing the main operation of the component video signal switching device shown in FIG.
  • FIG. 7 is a flowchart showing a detailed operation of the sub-routine for adjusting the aspect ratio shown in FIG.
  • FIG. 8 is an explanatory diagram showing an example of the aspect ratio adjustment according to the present invention.
  • FIG. 9 is an explanatory diagram showing an example of the aspect ratio adjustment according to the present invention, which is different from the example shown in FIG.
  • FIG. 10 is a block diagram showing a configuration of a component video signal switching device according to the third embodiment of the present invention.
  • FIG. 11 is a block diagram showing a detailed configuration of the controller shown in FIG. 10.
  • FIG. 12 is a flowchart showing the operation of the component video signal switching device shown in FIG.
  • FIG. 13 is a block diagram showing a configuration of a component video signal switching device according to a fourth embodiment of the present invention.
  • FIG. 14 is a flowchart showing main operations of the component video signal switching device shown in FIG.
  • FIG. 15 is a block diagram showing a configuration of a component video signal switching device according to the fifth embodiment of the present invention.
  • FIG. 16 is a flowchart showing main operations of the component video signal switching device shown in FIG.
  • FIG. 17 is a flowchart showing the detailed operation of the effective video signal detection ZSTB key-processing subroutine shown in FIG. 16.
  • FIG. 18 is a block diagram showing a configuration of a component video signal switching device according to a sixth embodiment of the present invention.
  • Fig. 19 is a flowchart showing the main operation of the component video signal switching device shown in Fig. 18.
  • FIG. 20 is a block diagram showing a configuration of a component video signal switching device according to the seventh embodiment of the present invention.
  • FIG. 21 is a flowchart showing a main operation of the component video signal switching device shown in FIG.
  • FIG. 22 shows the input source automatic switching selection subroutine shown in Figure 21. This is a port that shows the detailed operation of the chin.
  • FIG. 23 is an explanatory diagram showing an automatic setting method for the input source automatic selection subroutine in the three-component video signal switching device shown in FIG. 20.
  • FIG. 24 is a block diagram showing a configuration of a component video signal switching device according to an eighth embodiment of the present invention.
  • FIG. 25 is a flowchart showing the operation of the component video signal switching device shown in FIG.
  • FIG. 26 is an illustration showing an example of a message displayed on the first warning message display sub-routine of the front-chat shown in FIG. 25. It is a figure.
  • FIG. 27 shows the second warning message display subroutine shown in the flowchart shown in FIG. 25.
  • FIG. 4 is an explanatory view showing an example of a source.
  • FIG. 28 is a block diagram showing the configuration of a conventional component video signal switching device.
  • BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail. For this reason, this will be described with reference to the accompanying drawings.
  • FIG. 1 shows a functional block diagram of the component video signal switching device V spi according to the present embodiment.
  • the video signal switching device V s 1 has an input terminal 1, an NTSC color difference signal demodulator 2, an image signal switching device 3, and a synchro-noise 4
  • RGB processor 5 display 6
  • first controller 11 A remote control wave receiver 12
  • STB remote control code table 1 Including 3.
  • Input terminal 1 is used for luminance signal Y, color difference signal PB, and luminance signal Y output from an external component video signal source typified by an STB for television and a DVD player. And a first component video signal S c V 1 including the color difference signal PR.
  • the input terminal 1 is connected to the image signal switching device for each of the luminance signal Y, the color difference signal PB, and the color difference signal PR included in the first component video signal ScV1. Output to 3.
  • the NTSC color-difference signal demodulator 2 includes a luminance signal Y and a chroma signal C obtained based on a composite video signal of various TV standard systems represented by the NTSC system.
  • the luminance signal Y, the color difference signal U, and the color difference signal V included in the second component video signal ScV 2 are output to the image signal switch 3.
  • the luminance signal Y and the chrominance signal C input to the NTSC color difference signal demodulator 2 are, for example, a YZC separation of an NTSC type composite video signal (not shown). ) To obtain the output separated by YZc, or the output of the so-called S terminal of a video tape recorder.
  • the image signal switch 3 is configured to output the image signal from the input terminal 1 based on the selection signal Sw input from the controller 11 1 component video signal S cvl (Y, PB, PR) and the second component video signal S cv 2 input from the NTSC color difference signal demodulator 2 (Y, U, V) Selectively output one of them.
  • the selection signal Sw is a binary signal having a high level and a low level. When the selection signal Sw is high, the image signal switch 3 selects the input terminal 1, and when the selection signal Sw is low, the NTSC color difference signal demodulator 2 is selected. Be configured.
  • the sink separator 4 is composed of a sync separation circuit, and outputs the first component video signal S c V 1 or the first component video signal output from the image signal switch 3.
  • a remote synchronizing signal H—SYNC and a vertical synchronizing signal V—SYNC are separated and extracted from the luminance signal Y included in the second component video signal Sc V 2 to output.
  • the remote wave receiver 12 receives a remote control wave transmitted from a remote control operated by a user and carries a digital code transmitted by the remote control wave. Output to the first controller 11 A
  • the STB remote control table 13 stores the STB remote control code for DTV.
  • the first controller 11 A stores the digital record S rc input from the remote control wave receiver 12 into the STB remote control table 13.
  • a remote control code Rc that reflects the user's intention is extracted by collating the stored remote control code with the remote control code Rc. Then, the first controller 11 A reflects the user's intention and cuts off the component video signal ScV output from the image signal switch 3. Select to change The selection signal Sw is generated and output to the image signal switch 3.
  • the first controller 11 A and the STB remote control code table 13 are composed of the first component video signal switching controller 100 A Are configured.
  • the RGB processor 5 is composed of an RGB demodulation circuit and is based on the horizontal synchronizing signal H—SYNC and the vertical synchronizing signal V—SYNC inputted from the sink separator 4.
  • the first component video signal Scvl Y, PB, PR
  • the second component video signal Scv2 Y, U, V.
  • One of them is demodulated into the original R, G, B color signals and output to the display 6.
  • the display 6 is preferably composed of a CRT and displays an image based on the R, G, and B color signals input from the RGB processor 5.
  • FIG. 2 shows the configuration of the first controller 11A.
  • the first controller 11A controls the remote control code register 110a, the processor 110b, and the set remote control module 110c. Including.
  • the remote control register 110a stores the digital code Src input from the remote control wave receiver 12a.
  • the set remote control 1110c stores a custom code defined for each remote control.
  • the processing unit 110b receives the received digital code based on the various remote control custom codes recorded in the set remote control table 110c. If the digital code S rc is determined to be the STB code for DTV, the digital code S rc is stored in the STB remote control code table 13. Have been Check with Mocon code. Then, the received digital
  • the processor 11 Ob outputs a selection signal Sw based on the input remote control code Rc from the remote control code table 13 and the STB remote control table 13.
  • the user switches the component video signal ScV output from the image signal switch 3 to the RGB processor 5.
  • an external component video signal source such as an STB or DVD
  • the image signal switch 3 is automatically selected for the image.
  • the component video signal ScV input from the audio data source is controlled so as to be selectively output.
  • the user simply selects the program, channel, or content that he / she wants to view, and can use the TV, etc.
  • the input system of this display device is automatically connected to the video and audio data source that provides the selected content. As a result, it is not necessary to individually set both the video and audio data sources and the display device as in the related art.
  • the component video signal switching device Vsp1 is powered on and starts its processing.
  • step # 100 the components of the component video signal switching device V spi are described. Is initialized. Then, the process proceeds to the next step # 200.
  • step # 200 instructions from the remote control of the user are related to the external component video source 1 In some cases, a process of causing the image signal switch 3 to output the first component video signal ScV1 supplied to the input terminal 1 is performed. If the user's remote control does not relate to the external component video signal source, the second signal supplied from the NTSC color difference signal demodulator 2 to the image signal switch 3 is supplied to the image signal switch 3. A process of outputting the component video signal ScV2 of the above is performed. The operation of the STB key processing subroutine will be described later in detail with reference to FIG. Then, the process proceeds to the next step # 700.
  • step # 700 the component video signal S cv output from the image signal switch 3 is processed, and the image is displayed on a television device. Will be implemented.
  • Step # 200 an example of the operation in Step # 200 described above will be specifically described with reference to a flowchart shown in FIG.
  • step S202 the remote control wave receiver 12 receives the digital code Src transmitted from the remote control, and the first controller 11 Output to 1A.
  • the first controller 11 A remote control code register 110 A stores the digital code S rc input from the remote control wave receiver 12. .
  • step S204 the processor 11Ob stores the digital record stored in the remote control code register 110a. Src is compared with the custom codes of various remote controls recorded in set remote control 110c, and the received data is compared. Relay code S rc power Judge whether or not it is STB code for DTV. If the STB code is a DTV STB code, it is determined as Yes and the process proceeds to step S206. On the other hand, if the determination is No, the processing of step # 200 is terminated.
  • step S206 the processor 110b stores the received digital record Src and the STB remote control code table 13 in the received digital record Src. Compare remote control codes.
  • step # 200 ends.
  • step S208 the switching signal indicating whether the image signal switching unit 3 has selected the output of the input terminal 1 or the output of the NTSC color difference signal demodulator 2 It is determined whether or not the lag F sw force S 1. Note that the switching flag F sw is set to 1 when the image signal switch 3 has already selected the output of the input terminal 1 and selects the output of the NTSC color difference signal demodulator 2. are doing In this case, it shall be set to 0x.
  • the switching flag Fsw is 1, that is, if the image signal switch 3 has selected the output of the input terminal 1, it is determined to be Yes, and the processing is terminated.
  • the switching flag F sw is 0, that is, the image signal switching unit 3 determines that the output of the NTSC color-difference signal demodulator 2 is selected as Yes, and the processing is performed. Proceed to step S210
  • step S210 the processor 11 Ob sets the selection signal Sw to the 8-level and outputs it to the image signal switch 3. As described above, the image signal switch 3 selects the input terminal 1 based on the high-level selection signal Sw. Then, the process proceeds to the next step S212.
  • step S2122 the switching flag Fsw is set to 1 (: ⁇ ), and the process ends.
  • the user operates the remote control to send instructions related to content such as programs provided from a specific component video signal source to the component video signal switching device. Emitted for V s ⁇ 1.
  • the image signal switch 3 naturally selects the output of the NTSC color difference signal demodulator 2 and sinks the sync signal.
  • the output is controlled to output to the RGB processor 4 and the RGB processor 5.
  • the user After watching the content on the video deck, release the digital To watch the broadcast, the user must reselect the component video signal source to the desired one using the remote control. In particular, on many display devices, the selection of the video input is toggled. Therefore, to select the input from the desired component video signal source, the input selection key must be pressed many times.
  • the user presses the button corresponding to the desired function after selecting the STB for DTV with the user's power S remote control the digital function designating the same function is selected. Tal code S rc is transmitted to remote control wave receiver 12.
  • the remote control wave receiver 12 receives the digital code Src and outputs it to the first controller 11A.
  • the first controller 11A receives the remote control digital code S rc of the received remote control and the remote control stored in the STB remote control code table 13. Compare with the contents of the code. If the contents of the digital code S rc match one of the remote control codes, the first controller 11A immediately issues a high-level selection signal. Output Sw to image signal switch 3 and select the first component video signal S cvl (Y, PB, PR) output from input terminal 1 Switch accordingly.
  • the remote control register 110a of the first controller 11A is connected to a remote control register input from the remote control wave receiver 12a. Save the code Src.
  • the processor 110b transmits the digital code Src stored in the remote control code register 110a to the set remote control module 110c. If the received digital code S rc is a STB code for DTV, it is checked against the custom code of various remote controllers recorded in c. In this case, the contents of the digital record S rc and the remote control code R c stored in the STB remote control table 13 are compared. . Then, the processor 11 Ob receives the first component video signal S c from which the digital code S rc is supplied from an external component video signal source. If it is related to V 1, a high-level selection signal Sw is output to the image signal switch 3. As a result, the first component video signal ScV1 is output to the sink separator 4 and the RGB processor 5.
  • the second component video signal ScV2 of the conventional NTSC system, and the first component supplied from the DTV STB are used.
  • the display can be switched to the component video signal ScV1 (Y, PB, PR) smoothly and displayed on the display 6.
  • the remote control code of the STB for DTV issued from any remote control can be used to switch the input signal of the display device while operating the STB for DTV. To operate. As a result, the user can enjoy the new broadcast form of DTV using the STB without feeling uncomfortable.
  • the image signal switching device 3 includes the NTSC color difference signal demodulation device 2
  • the first controller 11A puts the image signal switch 3 to the input terminal 1 side. Control is performed so as to input the first component video signal Scvl (Y, PB, PR). Pass
  • FIG. 5 A description will be given of a component video signal switching device according to the second embodiment of the present invention with reference to FIGS. 5, 6, and 7.
  • FIG. 5 A description will be given of a component video signal switching device according to the second embodiment of the present invention with reference to FIGS. 5, 6, and 7.
  • the component video signal switching device V sp 2 includes the component video signal switching device V sp 2 shown in FIG.
  • the first component video signal switching controller 1 0 0 0 A of the video signal switching device Vsp 1 is connected to the second component video signal switching controller 1 0 0 0 B. It has been replaced.
  • the second component video signal switching controller 1000B is connected to the first component video signal switching controller 1000A for an aspect ratio detection.
  • the output device 100 has a newly provided configuration.
  • the aspect ratio detector 100 receives the luminance signal Y of the first component video signal ScV1 output from the input terminal 1 and inputs the luminance signal Y. Detects the aspect ratio of the image represented by the component video signal SV1. Then, the aspect ratio detector 100 generates an aspect ratio signal Ra indicating the detected aspect ratio, and outputs the first controller 11 A Output .
  • the factor ratio detector 100 includes a slicer including a slicer 100a, a sink cell 100b, and a data register 100c.
  • the luminance signal Y of the first component video signal ScV is input from the input terminal 1 to the isa 100a and the sink separator 110b. It is done.
  • Synchro Ray 1 0 O b is a vertical synchronization signal V—S and a horizontal synchronization signal H—S of the first component video signal S c V 1 based on the input luminance signal Y. Is extracted and output to slicer 100a.
  • the slicer 100a is based on the vertical synchronizing signal V-S and the horizontal synchronizing signal H-S input from the sync sensor 100 ° b.
  • the ratio Ra is obtained and output to the data register 100c.
  • the data register 100c temporarily stores the aspect ratio Ra and sends it to the first controller 11A at a predetermined evening time. Output .
  • the operation of the component video signal switching device Vsp2 is based on the STB key processing subroutine of step # 200 of the flowchart shown in FIG. Between the television image general processing subroutine at step # 700 and the aspect ratio adjustment subroutine at step # 300, a new subroutine is newly installed. It is.
  • step # 300 the component video signal switching device Vsp2 is not connected to the component video signal switching device Vsp2 after the processes in steps # 100 and # 200 described above are performed. , The process proceeds to step # 300.
  • step # 300 the aspect ratio of the first component video signal Sc V1 is determined by the aspect ratio detector 100. Ra is detected. Then, based on the detected aspect ratio Ra, the first component video signal ScV1 on the display 6 is correct. Spect The aspect ratio of the image displayed on the display 6 (hereinafter referred to as the "aspect ratio of the display 6") so that it can be displayed as a ratio. Is adjusted. Then, the process proceeds to the next television image general processing subroutine of step # 700.
  • step S302 the aspect ratio Ra detected by the aspect ratio detector 100 is set to the value of the detector 100
  • the evening register 100c outputs the power to the first controller 11A. That is, the aspect ratio Ra of the first component video signal ScV1 is read by the first controller 11A. Then, the process proceeds to the next step S304.
  • step S304 the processing branches according to the value of the aspect ratio Ra. That is, in this example, when the aspect ratio Ra is 16: 9, the process proceeds to step S306. If the aspect ratio Ra is 4: 3 (N0RMAL), the process proceeds to step S308. If the target ratio Ra is 4: 3 (LETTERRBOX), the process proceeds to step S310.
  • step S306 since the normal NTSC aspect ratio is 4: 3, the data is adjusted to the aspect ratio of 16: 9.
  • the vertical deflection angle or the horizontal deflection angle of the display 6 is adjusted according to the state of the aspect ratio of the display 6. And terminate the process
  • step S308 the aspect ratio is 4: 3. Normally, it is the same as NTSC's aspect ratio.
  • the processing is terminated without changing the vertical deflection angle and the horizontal deflection angle of the display 6.
  • step S310 Even in step S310, the aspect ratio is 4: 3, so that the display 6 is similar to step S308.
  • the process ends without changing the vertical deflection angle and horizontal deflection angle.
  • Ho1 and V01 represent the horizontal length and the vertical length of the image on the display 6, respectively.
  • Ho1: Vo1 is 4: 3.
  • the vertical deflection angle should be adjusted (compressed) so that the vertical length V ol is reduced by a factor of 3/4 to V m.
  • step S306 As described above, the case where the aspect ratio is changed from 4: 3 to 16: 9 in step S306 has been described. However, switching from the second component video signal ScV2 to the first component video signal ScV1, etc. It is necessary to change the aspect ratio of display 6 from 16: 9 to 4: 3.
  • the figure shows the aspect ratio adjustment for 6: 9.
  • Ho 2 and V 02 are the images on the display 6 respectively. Represents the horizontal and vertical length of the image.
  • Ho2: Vo2 is 16: 9.
  • the horizontal length Ho 2 is reduced by a factor of 3/4 to H m in order to properly display.
  • the horizontal deflection angle should be adjusted (compressed).
  • the image signal switching device 3 As described above, in the component video signal switching device V sp2 according to the present embodiment, the image signal switching device 3
  • the first controller 11A If it is set to select the output of the NTSC color difference signal demodulator 2 and receives the digital code Src of the STB for DTV, the first controller 11A outputs the text. It deciphers the Src code Src and compares it with the contents of the STB remote control code table 13 for DTV installed inside. Then, if there is a match between the received digit code Src and the contents of the STB remote control table 13, the controller 11 A outputs the image signal. Set the switch 3 to the input terminal 1 to which the first component video signal ScV1 (Y, PB, PR) is supplied from the external component video signal source. Let
  • the first controller 11A determines the image ratio Ra of the image of the first component video signal ScV1.
  • the controller 11A of the display 6 adjusts the horizontal deflection angle or the vertical deflection angle of the display 6 according to the discriminated aspect ratio Ra, and performs the first component control. Control so that the image of the single-unit video signal Sc V 1 is displayed correctly
  • FIG. 10 FIG. 1 and FIG. 12, the second embodiment of the present invention will be described. A description will be given of a component video signal switching device according to the third embodiment.
  • the component video signal switching device Vsp3 includes the component video signal switching device Vsp3 shown in FIG. G
  • the first component of the video signal switching device Vs1 The video signal switching controller 1 0 0 0 A is the third component
  • the video signal switching controller 1 0 0 0 C Has been replaced.
  • the third component video signal switching controller 100 C is the first component video signal switching controller 100 A shown in FIG.
  • the first controller 11A is replaced by a second controller 11B, and a switch 15 is newly provided.
  • the switch 15 is attached to the input terminal 1, and the external component video is connected to the luminance signal Y terminal, the color difference signal PB terminal, and the color difference signal PR terminal of the input terminal 1. Detect if the input cable from the signal source is connected. Then, the switch 15 outputs a switch signal Ssw indicating the detection result to the second controller 11B.
  • FIG. 11 shows the configuration of the second controller 11B.
  • a switch port 110d is newly provided in the first controller 11A shown in FIG.
  • the switch port 110d is provided for each cable connected to the input terminal 1 based on the switch signal S sw input from the switch 15.
  • a connection signal Sen indicating the connection state is generated and output to the processor 110b.
  • step S1 is inserted into input terminal 1 to determine whether a cable from an external component video signal source is connected.
  • step S3 there is provided a step S3 for outputting a mouth-level selection signal Sw. .
  • step S 1 the second controller 11 B transmits the input terminal 1 and the external component video signal source based on the switch signal S sw. Determine if the is connected by a cable. If they are not connected, it is determined to be No, and the process proceeds to step S3.
  • step S3 the second controller 11B outputs the selection signal Sw to the image signal switch 3 at the mouth level.
  • the image signal switch 3 selects the output of the NTSC color difference signal demodulator 2 in response to the one-level selection signal Sw. Then, proceed to step # 700 described above.
  • step S1 if it is determined in step S1 that No is not connected, that is, it is determined that the cable of the external component video signal source is not connected to the input terminal 1, Even if the first component video signal ScV1 for STB, which is the output of input terminal 1, is selected in the previous processing, Then, the second component video signal ScV2 for the conventional NTSC, which is the output of the NTSC color difference signal demodulator 2, is selected and displayed.
  • This configuration allows the user to enter If a defect such as a connection failure occurs while watching the first component video signal Sc V1 on the terminal 1 side, the display 6 Automatically switches to the second component video signal S cv 2, causing the screen display of the display 6 to suddenly become black. It is possible to prevent quarting. Further, this can reduce the possibility that the user mistakenly recognizes that the display device is a failure of the display device itself.
  • step S1 determines whether an external component video signal source is connected to input terminal 1 or not. If it is determined in step S1 that Yes is connected, that is, that an external component video signal source is connected to input terminal 1, processing is performed. Goes to # 700 through # 200. As a result, as described with reference to FIG. 3, the component video signal ScV in response to the user's instruction using the remote control is displayed on the display 6. Displayed with.
  • step S 1 the process returns to step S 1, and monitors whether there is an abnormality in the connection of the cable of the external component video signal source to the input terminal 1. If there is an abnormality, the image signal switch 3 always selects the second component video signal ScV2 which is the output of the NTSC color difference signal demodulator 2. Is controlled as follows. In other words, the switching operation of the component video signal ScV when the external component video signal source is not connected to the input terminal 1 is prevented.
  • the switch 15 serving as connection determination means is provided at the input terminal 1. Only when the external component video signal source is connected to the input terminal 1, the STB key processing unit of step # 200 described in the first embodiment can be used. Blue-chin Allow execution. Then, the TV image general processing subroutine of step # 700 is executed to execute the first component video signal ScV1 and the second component. Control is performed so that either image of the net video signal ScV2 is displayed on the display 6.
  • FIG. 13 As shown in the block diagram of FIG. 13, the component video signal switching device V sp4 according to the present embodiment is provided with a third component video signal.
  • the switching controller 10000C has been replaced by the fourth component video signal switching controller 10000D.
  • the fourth component video signal switching controller 100 D is connected to the third component video signal switching controller 100 C shown in FIG.
  • An aspect ratio detector 100 used for the second component video signal switching controller 1000B shown in (1) is provided.
  • step S 1 for judging whether or not to insert is inserted.
  • step S 3 for outputting a mouth-level selection signal Sw to the image signal switching unit 3 Has been established.
  • the image signal switch 3 is set to display the second component video signal ScV2 in step S3. .
  • step # 200 If it is determined that an external component video signal source is connected to the input terminal 1, the STB key processing subroutine of step # 200 is performed. The chin is executed.
  • Steps # 300 and # 700 are executed regardless of whether the external component video signal source connection at input terminal 1 is abnormal.
  • the component video signal S cv is properly displayed on the display 6. Then, the process returns to step S1 to continue monitoring the connection state of the external component video signal source at the input terminal 1.
  • the switch 15 serving as connection discriminating means is provided at the input terminal 1, and the external connector is provided. Only when the component video signal source is connected to input terminal 1 is the STB key processing subroutine of step # 200 described in the first embodiment. Allow execution. Then, through the following step # 300, the aspect ratio adjustment subroutine, the TV image general processing of step # 700 is executed, and the Component video signal S The display 6 is controlled so that the image is displayed properly in accordance with the cv's aspect ratio.
  • a component video signal switching device according to a fifth embodiment of the present invention will be described with reference to FIGS. 15, 16, and 17.
  • the component video signal switching device V s P5 has a third embodiment shown in FIG.
  • the third component video signal switching controller 100 0 C of the example is replaced with the fifth component video signal switching controller 100 0 E. It has a unique configuration. It should be noted that the fifth component video signal switching controller 100 0 E is connected to the third component video signal switching controller 100 0 C by a synchronous power amplifier. Data 16 has been newly installed
  • the second controller 11 B has the same basic structure but outputs a reset signal Sr of the synchronous counter 16.
  • Controller 3 has been replaced by controller 11C.
  • Synchronization signal 16 is vertical input from sync separator 4 and is also input from sync separator 4 for each sync signal V-SYNC.
  • the horizontal synchronization signal H-SYNC is counted, and the output value Sco is output to the third controller 11C.
  • the count value S co of the synchronous counter 16 is a reset signal input from the third controller 11C to the synchronous controller 16. Reset by S r
  • the third controller 11 1C controls the input count value S co Based on this, the interval of the horizontal synchronizing signal H—SYNC is counted by the clock built in the third controller 11c.
  • the front-end shutter shown in FIG. 12 is a subroutine # 20 of the front end of the front end according to the third embodiment shown in FIG. 0 is replaced by the effective video signal detection ZS ⁇ ⁇ key processing subroutine # 2220.
  • the synchronization signal determination is performed based on the first component video signal ScV1 input through the input terminal 1. It will be equipped with a synchronous counter.
  • the first component video signal S valid in step 16 It is determined whether or not c V 1 is supplied to input terminal 1.
  • the third controller 11C deciphers the digital code S rc, and the S ⁇ B remote control for D ⁇ V provided inside is provided. This is compared with the remote control code Rc stored in the remote control code table 13. Then, the pL is stored in the remote control code table 13 in S S. If any of the remote commands that are received match the received "7" code Src, the component The synchronization detection status of the synchronization detection means was confirmed by the controller. To the input terminal 1 for the first component video signal S cvl (Y, PB, PR) from the external component video signal source Control so that it can be switched.
  • S cvl Y, PB, PR
  • step # 220 Next, the operation in the above-described step # 220 will be described in detail with reference to a flowchart shown in FIG.
  • the processing of # 220 is described in detail below between step S206 of step # 200 and step S208 of FIG. 4 shown in FIG. Steps S402, S404, S406, S408, S410, S412, S414, S416, and S4 1 8 is inserted.
  • step S402 the third controller 11C outputs a reset signal Sr to the synchronous counter 16 to generate a count value Sco. Reset. Then, the process proceeds to the next step S404.
  • step S404 the synchronization counter 16 monitors the horizontal synchronization signal H—SYNC input from the sink separator 4 and outputs the horizontal synchronization signal H—. Determine if SYNC is present. If the horizontal sync signal H — SYNC is not input, it is determined as No and the processing ends. On the other hand, if there is an input of the horizontal synchronization signal H-SYNC, it is determined to be Yes, and the process proceeds to the next step S406. In step S406, the synchronization counter 16 counts the input horizontal synchronization signal H-SYNC in the basic clock. Then, the process proceeds to the next step S408. In step S408, the synchronous counter 16 calculates the horizontal frequency based on the count value obtained in step S406. Further, the synchronous counter 16 outputs a power count value Sc0 indicating the calculated value to the third controller 11C. Then, the process proceeds to the next step S410.
  • step S 410 the third controller 11 C performs the step based on the count value S co input from the synchronous counter 16. It is determined whether or not the horizontal frequency calculated in step S408 is correct. If it is not correct, it is determined as No and the processing ends. On the other hand, if it is correct, it is determined to be Yes, and the process proceeds to the next step S412.
  • step S 4 12 the synchronization counter 16 monitors the input of the vertical synchronization signal V—SYNC from the synchro-synchro 8 ° C, and outputs a vertical signal.
  • Sync signal V — Determines whether SYNC is present. If there is no input of the vertical synchronization signal V — SYNC, it is determined to be N 0, and the processing ends. On the other hand, when the vertical synchronizing signal V—SYNC is input, it is determined to be Yes, and the process proceeds to the next step S414.
  • step S 414 the sync count 16 is the same as the vertical sync signal V — SYNC input from the sync separator 4. Seno ⁇ ° count using the horizontal sync signal H-SYNC input from evening 4. Then, the process proceeds to the next step S416.
  • step S416 the synchronization force counter 16 calculates the vertical frequency based on the count value obtained in step S414. Further, the synchronous counter 16 outputs a count value Sc0 indicating the calculated value to the third controller 11C. Then, the process proceeds to the next step S 4 18.
  • step S 418 the third controller 11 C performs the step based on the count value S co input from the synchronization counter 16. It is determined whether or not the vertical frequency calculated in step S416 is correct. If not correct, it is determined as No and the processing is terminated. On the other hand, if it is correct, it is determined to be Yes, and the processing proceeds to step S208 described above.
  • the connection status monitor between the input terminal 1 and the external component video signal source is performed.
  • a synchronization counter 16 which is synchronization detection means for performing synchronization detection of the second component video signal ScV 2 input to the input terminal 1, is further provided. It is provided in.
  • the component video signal switching device Vsp 6 has a component shown in FIG. 15.
  • the fifth component video signal switching controller 1 0 0 0 of the component video signal switching device V sp 5 is the sixth component video signal switching controller 1 0 0 0 It has the configuration replaced by F.
  • the sixth component video signal switching controller 100 0 F has a fifth component video signal switching controller 100 0 E as shown in FIG.
  • An aspect ratio detector 100 described in detail above has been added.
  • the flow chart shown in the figure is the flow chart between steps # 22 and # 700 of the flow chart according to the fifth embodiment shown in FIG.
  • an aspect ratio adjusting subroutine of step # 300 which is a powerful example of the second embodiment shown in FIG. 6, is inserted.
  • the connection between the input terminal 1 and the external component video signal source is monitored, and In addition, synchronous detection of the second component video 1 symbol ScV2 supplied to the input terminal 1 is performed. Only when the external component video signal source is connected to input m1 and the synchro- nous detection is confirmed by the synchro- nous signal. STB key processing (S208S 2 1 2) is allowed to execute.
  • step # 300 the component video signal ScV is output in response to the component video signal ScV. Adjust the aspect ratio of the display 6. Thereafter, general processing of the television image in step # 700 is executed, and control is performed so that the image is displayed on the display 6.
  • FIGS. 20, 21, 22 and 23 Next, a component video signal switching device according to a seventh embodiment of the present invention will be described with reference to FIGS. 20, 21, 22 and 23.
  • the component video signal switching device V sp7 that works in this embodiment is related to the sixth embodiment shown in FIG. 18.
  • the sixth component video signal switching controller 1000F of the component video signal switching device Vsp6 is connected to the seventh component video signal switching controller 100G. Have a replaced configuration
  • the seventh component video signal switching controller 1000G is connected to the sixth component video signal switching controller 1000F by an on-screen message generator. (Indicated as "0 SMG" in the drawing.) 17 and an automatic setting register 18 have been added.
  • the component video signal switching unit Vs ⁇ 7 detects the remote TV code of the STB for DTV
  • the on-screen screen and the page generator 17 Make the image signal switch 3 automatically select the output of input terminal 1 or In each case, the choice of whether or not the user indicates the selection is displayed on the display 6 as an on-screen message as shown in Fig. 23. .
  • the user operates the remote control to set the desired selection in response to the message displayed on the display 6.
  • the automatic setting register 18 is used to display the on-screen message displayed on the display 6 by the above-described on-screen message generator 17. In response to the message, the setting contents set by the user are stored.
  • An automatic setting menu is displayed on the screen of the display 6 as shown in FIG. 23.
  • the "Automatic setting” menu displays “Automatic setting", "Yes", and “No".
  • the “automatic setting” means that, when the component video signal switching device Vsp7 detects the remote control code of the STB for DTV as described above, the image signal switching device 3 Means that the output of input terminal 1 is automatically selected. “Yes” means that “Automatic setting” is enabled. On the other hand, “No” means that “automatic setting” is disabled. Users who use the remote control to do the above “No” or “No” using the remote control Select. The selection of either “do” or “do not” is stored in the automatic setting register 18.
  • the remote control of the DTV STB is performed in the same manner as in the case where the execution of the STB key processing is permitted.
  • the image signal switching unit 3 automatically selects the output of the input terminal 1.
  • selecting "No" is also effective.
  • step S1 a subroutine # 500 for automatically changing the input source is provided.
  • step # 100 when the operation of the component video signal switching device is started, it is first initialized in step # 100. Then, in step S1, before determining whether the cable from the external component video signal source is connected to the input terminal 1, In step S502 of step # 500 shown in FIG. 22, it is determined whether or not the user is willing to perform the input source automatic switching setting.
  • step S502 the user inputs a remote control or the like within a predetermined time after initialization of step # 100. Means may be transmitted to the component video signal switching device Vsp by means. After the initialization of step # 100, the third control The device 11C drives the on-screen message generator 17 to display a message on the display 6 for confirming the user's intention. You can make it work.
  • step S502 that is, if the user has the intention to set the input source automatic switching, the processing proceeds to the next step S504.
  • step S504 the on-screen message (abbreviated as “ ⁇ SM”) shown in FIG. 23 is displayed. Then, the process proceeds to the next step S506.
  • ⁇ SM on-screen message
  • step S506 the user "automatically” or “does not” auto-configure using the on-screen message force. Using the remote control. Then, the process proceeds to the next step S508.
  • step S508 the selection made at step S506 is stored in the automatic setting register 18. Then, the process proceeds to the next step S510.
  • step S510 the selection settings stored at step S508 are read out from the automatic setting register 18th. Then, after ending the processing in step # 500, the processing proceeds to step S1.
  • step S502 if No, that is, if the user does not intend to set the input source automatic switching, the processing proceeds to step S504, described above. Skip S506 and S508 and proceed to step S510.
  • the component video signal switching device Vsp7 when the component video signal switching device Vsp7 is powered on and its operation is At the stage when the process is started, the user is asked to determine whether or not to perform the input source automatic switching setting. If the user has an intention to set, the valid Z invalid of the automatic setting is selectively registered by the method described in detail with reference to FIG. After that, until the operation of the component video signal switching device Vsp7 is terminated, the image signal switching device 3 performs the input source automatic switching setting according to the set method. .
  • the input source automatic switching setting subroutine is inserted between step # 100 and step S1 as step # 500.
  • it may be incorporated into the TV image general processing subroutine of step # 700.
  • the input source automatic switching setting which is limited to one time after the power is turned on, can be freely set during the operation of the component video signal switching device Vsp7.
  • the input source automatic switching setting can be executed the number of times.
  • FIG. 24 With reference to FIG. 24, FIG. 25, FIG. 26, and FIG. 27, a component video signal switching device according to an eighth embodiment of the present invention will be described.
  • the component video signal switching device Vsp8 according to the present embodiment is different from the component video signal switching device Vsp8 according to the seventh embodiment shown in FIG.
  • the seventh component video signal switching controller 100 0 G of the component video signal switching device V sp 7 is connected to the eighth component video signal switching controller 100 0 Has the configuration replaced by 0H
  • the eighth component video signal switching controller 1000H is connected to the seventh component video signal switching controller 1000G by means of ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ S S.
  • message message 19 the displayed contents of the warning message are stored. For example, if the cables for the luminance signal Y, the color difference signal PB and the color difference signal PR are not connected to the input connector 1, they are output from the switch 15 Based on the switch signal S sw, the third controller 11C recognizes the situation.
  • the third controller 11C includes 19 message registers corresponding to the recognized situation, and 19 message registers corresponding to the recognized situation. Read S msg. Further, the third controller 11C writes the contents of the read message Smsg to the on-screen message generator 17 . As a result, a first warning message as shown in FIG. 26 is displayed on the display 6.
  • switch 15 detects the validity of the signal line connection to the input terminal 1 from the external component video signal source, but the synchronous counter Evening 16 does not check the DTV STB synchronization signal.
  • the 7n3 controller 11C is not energized to the external STB which is the external component video signal source. Recognize it.
  • Oh Ru have the third controller 1 1 C, a first co-down port one to the input terminal 1 that has been entered Ne emission Bok video signal S c V 1 is Ah f ⁇ > was ineffective You
  • the third controller 11C outputs a message message representing the message 2 corresponding to the situation identified from the message register 19. Read S msg. Then, the third controller 11 C Saves the message message to the screen message generator 17
  • the flowchart shown in FIG. 25 is composed of the steps S1 and S3 of the flowchart shown in FIG. 21 according to the seventh embodiment.
  • the first warning message display subroutine # 600 is set in between.
  • a second message display subroutine # 6 is set.
  • the third controller 11C receives the input terminal 1 based on the switch signal Ssw input from the switch 15. Judgment that the external cable is not connected properly. Then, the process proceeds to the step S602 of the first warning message display subroutine # 600.
  • step S602 the third controller 11C displays message 1 from message register evening 19—message side. Evening-Read S msg. The processing then proceeds to the next step S
  • step S604 the third controller 11C turns on the message data S msg read from the message register 19. Write to screen message generator 17. Then, the process proceeds to the next step S606.
  • On-screen message at step S606 The generator 17 generates an on-screen message representing the message data S msg written by the third controller 11C. Output to display 6. As a result, display 6 displays the first warning message shown in FIG. 26. Then, the process proceeds to the next step S3, and then to step # 700.
  • step S1 determines whether the external cable is correctly connected to the input terminal 1 or not. If it is determined in step S1 that Yes is connected, that is, the external cable is correctly connected to the input terminal 1, the processing proceeds to the second warning message. Proceed to step S652 for message display subroutine # 650.
  • step S652 the third controller 11C generates the first component video signal ScV based on the count value Sco. Determine if 1 is valid. If it is determined to be invalid, the process proceeds to the next step S654, where the third controller 11 1 C reads out the message data S msg representing message 2 from 19 message registers. Then, the process proceeds to the next step S6556.
  • step S656 the third controller 11C outputs the message message data S msg read from the message register 19 to the third controller 11C. Write to clean message generator 17. Then, the process proceeds to the next step S658.
  • step S658 the on-screen message generator 17 receives the message written by the third controller 11C.
  • the display 6 displays the second warning message shown in FIG. 27. In other words, the user is informed that the external cable is connected to the input terminal 1 but the valid first component video signal ScV1 is not supplied. Is displayed for. Then, the process proceeds to the next step # 200, and then proceeds to step # 700.
  • step S652 determines whether the first component video signal ScV1 is valid. If it is determined in step S652 that the first component video signal ScV1 is valid, the above-described step S654, Skipping S656 and S658, processing proceeds to the # 200 STB key processing subroutine.
  • the component video signal switching device V sp may be modified as described below. That is, the connection between the remote control wave receiver 12 and the controller 11 of the component video signal switching controller 10 00 of the component video signal switching device Vsp. Set a Stannoy power supply that always drives the power. Then, the power supply of the entire component video signal switching device Vsp is set to 0 FF, and only the controller 11 and the remote control wave receiver 12 are stannoyed. It is driven by the power supply and monitors instructions from the remote control by the user.
  • the user's remote control signal is output to the external component in the corresponding code presence / absence detection step S202 of the STB key processing subroutine # 200.
  • the component video signal switching device V s P including the signal switching controller 100 0 supplies power to the entire component video signal switching device V s P, and the component video signal S c desired by the user. Switch to V to display the image. In this way, waste of power consumption of the component video signal switching device Vsp can be prevented.
  • the DTV STB is provided with a dedicated remote controller coatable table and a discriminating means.
  • the power on / off control of the television set or the switching of the signal to the component video input terminal can be performed in conjunction with the remote control of the STB. It can be used like a car with a built-in DTV STB, and it is possible to provide a TV receiver that is easy to use in the DTV era. It is possible to obtain extremely excellent effects. Further, having the functions of connection determination and synchronization detection has an extremely excellent effect that the usability of the user can be improved. At the same time, providing an easy-to-use method will also play an effective role in disseminating DTV.
  • this invention is based on the input of multiple types of component video signals from external devices such as digital TV STBs and DVD players. It can be used for image display represented by a TV.

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Abstract

Des instructions (Src, Rc) transmises à partir d'une seule commande à distance activent une première source de signaux externe (STB) et une seconde source de signaux interne (NTSC, 2). Un commutateur pour signaux vidéo composants (Vsp) effectue une commutation entre un premier signal vidéo composant (Scvl) émanant d'un terminal d'entrée (1) connecté à la première source de signaux (STB) et un second signal vidéo composant (Scv2) émanant de la seconde source de signaux (NTSC, 2), et présente une image sur un dispositif d'affichage (6). Le récepteur à commande à distance (12) reçoit les instructions (Src, Rc). Un commutateur pour signaux vidéo (3) transmet sélectivement les premiers et seconds signaux vidéo composants (Scv1, Scv2) au dispositif d'affichage (6). Une commande de commutation pour signaux vidéo composants (1000A) commande la commutation des signaux vidéo (3) pour sélectionner les premiers ou les seconds signaux vidéo composants (Scv1, Scv2), suivant ceux qui sont associés à l'instruction reçue (Src, Rc).
PCT/JP1999/005591 1998-10-15 1999-10-12 Commutateur pour signaux video composants WO2000022817A1 (fr)

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CA002314977A CA2314977A1 (fr) 1998-10-15 1999-10-12 Commutateur pour signaux video composants

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JP10/293519 1998-10-15
JP29351998 1998-10-15

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WO2000022817A1 true WO2000022817A1 (fr) 2000-04-20

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PCT/JP1999/005591 WO2000022817A1 (fr) 1998-10-15 1999-10-12 Commutateur pour signaux video composants

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CA (1) CA2314977A1 (fr)
TW (1) TW463499B (fr)
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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EP1453326A2 (fr) * 2003-02-28 2004-09-01 Thomson Licensing S.A. Appareil vidéo avec détection de signal vidéo et méthode associée de reconnaissance d'un signal vidéo
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US7394854B2 (en) 2000-07-21 2008-07-01 Matsushita Electric Industrial Co., Ltd. Signal transmission system
EP1453325A1 (fr) * 2003-02-28 2004-09-01 Deutsche Thomson-Brandt Gmbh Appareil vidéo avec détection de signal vidéo et méthode pour reconnaitre un signal vidéo
EP1453326A2 (fr) * 2003-02-28 2004-09-01 Thomson Licensing S.A. Appareil vidéo avec détection de signal vidéo et méthode associée de reconnaissance d'un signal vidéo
US7209184B2 (en) 2003-02-28 2007-04-24 Thomson Licensing, Inc. Video apparatus with video signal detection and respective method for recognizing a video signal
CN100342723C (zh) * 2003-02-28 2007-10-10 汤姆森特许公司 具有视频信号检测的视频装置及用于识别视频信号的方法
EP1453326A3 (fr) * 2003-02-28 2008-06-25 Thomson Licensing Appareil vidéo avec détection de signal vidéo et méthode associée de reconnaissance d'un signal vidéo
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