JP2006023345A - Automatic television image capture method and system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an "automatic television image capture method and system" which automatically capture and display desired television images. <P>SOLUTION: A keyword meeting the television image to be captured is set and whether the keyword is included in television voice or not is discriminated. If the keyword is included therein, the television image corresponding to the television voice is captured and displayed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a television image automatic capture method and apparatus, and more particularly, to a television image automatic capture method and apparatus for automatically capturing and displaying a desired television image.

  In digital broadcasting, video / audio information of multiple programs and program arrangement information SI (Service Information), which are logically formatted in the MPEG-2 TS (MPEG-2 transport stream) format, are multiplexed and installed at home via a network. The subscriber receives the multiplexed signal at the receiving terminal and decodes and enjoys the desired program. That is, the broadcast station converts the program arrangement information SI and the video stream and audio stream of a plurality of programs into MPEG-2TS format packets, and multiplexes the obtained packets into an MPEG-2 TS transport stream. Send it on a carrier.

  The digital broadcast receiving apparatus appropriately displays a program guide screen based on the received program arrangement information SI, and the user selects a program that the user wants to view. When a program to be viewed is selected, the digital broadcast receiving apparatus selects and demodulates the carrier on which the program is multiplexed, and MPEG-2 TS (Transport) in which a plurality of television broadcast program packets are multiplexed. After that, the video packet and audio packet of the target television broadcast program are extracted from the transport stream, and the extracted video packet and audio packet are decoded to output video and audio.

  FIG. 7 is an explanatory diagram when the audio elementary stream Audio ES and the video elementary stream Video ES of one broadcast program are packetized and multiplexed. (1) is an audio elementary stream (Audio ES), (5) Is a video elementary stream (Video ES), and (2) is an audio packet A1, A2, A3, A4,. . . , (4) shows video packets V1, V2,. . . V11, ..., (3) are multiplexed streams (MPEG-2 TS) in which video packets and audio packets are time-division multiplexed. Since the amount of information per screen is larger for video than for audio, the multiplexed stream (3) has a configuration in which one audio packet is multiplexed with multiple video packets, and padding packets are inserted as appropriate. Yes.

  FIG. 8 is a correspondence table of various table names constituting the program arrangement information SI and their packet identifiers PID and table IDs. (1) PAT (Program Association Table), (2) CAT (Conditional Access Table) , (3) PMT (Program Map Table), (4) NIT (Network Information Table), (5) SDT (Service Description Table), (6) BAT (Bouquet Association Table), (7) EIT (Event Information Table) (8) TDT (Time Date Table), (9) RST (Running Status Table), and (10) ST (Stuffing Table). The first four tables PAT, CAT, PMT, and NIT are tables defined by ministerial ordinances and are called program specification information PSI (Program Specific Information). Program sequence information SI presents (1) program name, broadcast date and time, description of program contents, etc., information about the program, (2) current date and time, (3) current progress of the program, etc. .

By the way, in television broadcasting, there is a case where it is desired to capture (capture) one screen. For example, a questionnaire destination, a quiz application destination, a television shopping destination, ingredients in a cooking program, how to get to an event venue, and the like are displayed on the television screen. This is because these are displayed on the TV screen with characters and maps, but there is no time to write down notes, and even if there is room, it becomes troublesome.
For this reason, in the first conventional technique, a television image is captured (recorded) by a trigger by a user operation, or the screen is extracted from the contents recorded using a personal computer and displayed.
The second prior art is not a TV image capture, but receives and displays a desired program in FM text multiplex broadcasting (see, for example, Patent Document 1). In the second prior art, the received character information program data is stored, and the character information program data is displayed if a keyword to which the character information program data is separately input is included.
JP-A-10-163906

The method of capturing (recording) a television image by a trigger by a user operation of the first prior art has a problem that the user must watch the television. Further, in the method of extracting and displaying the screen from the recorded content, there is a problem that the operation of searching for and displaying the image becomes troublesome.
Since the second prior art is FM character multiplex broadcasting, it is possible to specify and display desired character information program data based on a keyword, but there is a problem that it cannot be applied to capture a television image.
Accordingly, an object of the present invention is to automatically capture and display a desired television image.
An object of the present invention is to enable display of a desired television image captured by a simple operation.

  According to the present invention, in the television image automatic capture device that automatically captures and displays a desired television image, the above-described problem is a means for setting a keyword according to the television image to be captured, and the keyword is included in the television sound. A television image provided with a voice recognition means for determining whether or not a television image is captured, a television image holding means for capturing and storing a television image corresponding to a television sound including a keyword, and a display device for displaying the stored television image Achieved by automatic capture device. In this television image automatic capture device, the television image holding means is a television image storage means for storing the latest television image for a predetermined time, and when the keyword is detected, the television image from a time before the set time is detected. Is read out from the television image storage means as a captured image and stored. The television image automatic capture device further includes means for requesting display of a list of stored captured images, means for displaying a list of captured images upon request, and selecting and displaying the desired captured image from the list display. Means for displaying on the apparatus is provided.

  According to the present invention, in the television image automatic capture device that automatically captures and displays a desired television image, the above-described problem is a means for setting a keyword according to the television image to be captured, and the keyword is included in the television sound. This is achieved by a speech recognition means for determining whether or not the keyword is included in the television sound, and a television image automatic capture device provided with means for statically displaying a television image corresponding to the television sound on the display device.

  According to the present invention, in the television image automatic capture method for automatically capturing and displaying a desired television image, the present invention includes a step of setting a keyword according to the television image to be captured, and the keyword is included in the television sound. This is achieved by a television image automatic capture method having a step of determining whether or not a television image is captured and a step of capturing and displaying a television image corresponding to the television sound including the keyword. The television image automatic capture method further includes a step of requesting a list display of stored captured images, a step of displaying a list of capture images upon request, and selecting a desired captured image from the list display to the display device. A step of displaying.

According to the present invention, a keyword corresponding to a TV image to be captured is set, it is determined whether the keyword is included in the TV sound, and a TV image corresponding to the TV sound including the keyword is captured and displayed. Therefore, a desired television image can be automatically captured and displayed.
Further, according to the present invention, a keyword corresponding to a television image to be captured is set, it is determined whether the keyword is included in TV sound, and when the keyword is included in TV sound, Since the corresponding television image is statically displayed on the display device, the desired television image can be viewed carefully by the still image display.
According to the present invention, a list display of captured images is requested, a list of capture images is displayed upon request, and a desired capture image is selected from the list display and displayed on the display device. The desired television image captured by a simple operation can be displayed.

FIG. 1 is an explanatory diagram of an embodiment of the present invention.
When a questionnaire destination, a quiz application destination, a television shopping destination, a recipe in a cooking program, how to get to an event venue, and the like are displayed on the television screen, guidance according to the television screen is announced. For example, FIG. 1 shows a television shopping destination displayed on a television screen, and an announcement is made that “Destination is here. Don't make a mistake because it is late at night.”
In many cases, the word “destination” is included in a television audio announcement when a television shopping destination is displayed on a television screen. In addition, the words “material” and “menu” are often included in a television audio announcement when a recipe in a cooking program is displayed on a television screen. In addition, the word “how to” is often included in the TV audio announcement when the directions to the event venue are displayed on the TV screen. Therefore, these words “destination”, “material”, “how to go”, and other words are registered as keywords, and when a TV sound containing the keyword is found by voice recognition processing, a TV image corresponding to the TV sound is captured. To save and display.

  Therefore, the TV image automatic capture device of the present invention includes means for setting a keyword corresponding to a TV image to be captured, voice recognition means for determining whether or not the keyword is included in TV sound, and TV sound including the keyword. TV image holding means for capturing and storing a TV image corresponding to the display, and a display device for displaying the stored TV image. The TV image automatic capture device further includes means for requesting a list display of stored captured images, means for displaying a list of capture images upon request, and a display device for selecting a desired capture image from the list display. Means for displaying on the screen.

  FIG. 2 is a block diagram of a digital television receiver having a television image automatic capture function of the present invention. The antenna 1 receives a digital broadcast signal radio wave, and the front end unit 2 extracts a desired reception frequency component selected by the user from the broadcast signal received via the antenna 1 and outputs the received broadcast signal to the broadcast signal. Frequency conversion is performed and an intermediate frequency signal is output. The baseband unit 3 performs quadrature demodulation processing and FEC (Forward Error Correction) processing on the intermediate frequency signal output from the front end unit 2, then deinterleaves and descrambles the original data sequence. Finally, error detection / correction processing is performed and high-efficiency code data (MPEG data) is output. The data separation unit 4 separates the MPEG video data, MPEG audio data and information data (program sequence information SI) of the channel selected by the user from the high-efficiency code data (MPEG data) of all channels input from the baseband processing unit 3 Then, the MPEG video data and the MPEG audio data are input to the audio decoding unit 5 and the video decoding unit 6, respectively, and the information data is input to the control unit (host microcomputer) 8 via the information data decoding unit 7. The audio decoding unit 5 and the video decoding unit 6 decode the input MPEG audio data and MPEG video data into PCM audio signal and video signal, respectively, input the PCM audio signal to the DA converter 9, and input the video signal to the video processor 10. Enter. The DA converter 9 converts the PCM audio signal into an analog audio signal and outputs it from the speaker via the audio circuit 11. The video processor 10 performs predetermined video processing, inputs it to the display device 12, and displays an image on the television screen.

The buffer unit 13 sequentially buffers the television audio data and the video data output from the audio decoding unit 5 and the video decoding unit 6, respectively. The audio recognition control unit 14 includes pre-registered keywords in the TV audio. A known voice recognition process is executed and checked, and if it is included, a TV video corresponding to the TV voice is stored in the memory 15 as a captured video. The control unit 8 refers to the program arrangement information SI input from the information data decoding unit 7 to obtain the program name and broadcast date / time of the captured video, creates editing information including the keyword and the capture number, and creates the editing information. ED1, ED2,. . . As shown in FIG. 3, the captured images CIM1, CIM2,. . . Are stored in the memory 15 in association with
The operation unit 16 such as a remote control is provided with a keyword setting button 16a, a capture list calling button 16b, and a capture image selection button 16c in addition to a channel selection button, a program selection button, etc., and these buttons are operated and controlled via the interface unit 17. A request for setting a keyword, calling a capture list, selecting a captured image, and the like is input to the unit 8. As described in FIG. 1, the keywords “destination”, “material”, “how to go”, and other words are registered in the voice recognition control unit 14 using the keyword setting button 16a.

  In addition to the above control, the control unit 8 performs frequency tuning control by the front end unit 2, reception channel instruction control for the data separation unit 4, capture image search / display control, and the like. The video processor 10 performs image processing and capture image display control. For example, when a display of a capture list is requested from the operation unit 16, a list of captured images captured in the memory 15 is displayed together with a capture number, a keyword, a program name, a broadcast date and time, and the captured images selected from the list display are displayed. Is controlled so that it is enlarged and displayed on the full screen. Further, the captured images are searched and sorted using at least one of the keyword, the program name, and the broadcast date and time, and the requested captured images are searched and displayed.

FIG. 4 is a flowchart of a television image automatic capture process for automatically capturing and displaying a desired television image.
When a television image to be captured in advance is displayed, a word included in the television sound is estimated, and the keyword setting button 16a is operated as a keyword to be registered in the voice recognition control unit 14 (step 101). A keyword can be registered in a plurality of words according to a television image to be captured. It is also possible to register two or more keywords according to one television image to be captured, and to capture a television image according to television sound including the two or more keywords.
The buffer unit 13 sequentially and temporarily stores the TV sound and TV image output from the audio decoding unit 5 and the video decoding unit 6 (step 102), and the audio recognition control unit 14 recognizes the TV audio (step 103). Whether or not the registered keyword is included in the TV sound is identified (step 104). If the keyword is not included, the processing from step 102 is repeated. On the other hand, if a keyword is included, the television image corresponding to the television sound is stored (captured) in the memory 15, and the keyword is notified to the control unit 8 (step 105). The control unit 8 refers to the program arrangement information SI input from the information data decoding unit 7, obtains the program name and broadcast date and time of the captured video, includes the recognized keyword and capture number, and associates them with the captured image. Store in the memory 15 (step 106). Thereafter, returning to the beginning, the subsequent processing is repeated. As a result, a plurality of television images are stored in association with the editing information (capture number, keyword, program name, broadcast date) as shown in FIG.
Further, an image for several seconds can be stored in the memory 15 as a captured image as follows. That is, in step 102, the buffer unit 13 stores the latest television audio data and video data output from the audio decoding unit 5 and the video decoding unit 6 for a predetermined time, for example, about 30 seconds, and the voice recognition control unit 14 In 104, it is monitored whether or not a keyword registered in advance is included in the television sound. If a keyword is included, in step 105, a television image from a time before the detection time, for example, a time several seconds before, is read from the buffer 13 as a captured image and stored in the memory 15. The subsequent control is the same as in FIG.

FIG. 5 is a capture image selection display flow for selecting and displaying a desired capture image. First, a list display of stored captured images is requested by operating the capture list calling button 16b (step 201). In response to the request, the video processor 10 displays a list of captured images stored in the memory 15 together with the capture number, keyword, program name, and broadcast date and time (step 202). If it cannot be displayed on one screen, it is displayed by turning pages. In addition, when a television image being received is being displayed, a list of captured images is displayed by switching.
Next, a desired captured image is selected from the list display by the captured image selection button 16c (step 203). As a result, the video processor 10 displays the selected captured image in a fully enlarged manner on the screen of the display device 12 (step 204), and thereafter continues to display the captured image until a capture image display end operation is performed (step 204). 205).

The above processing is a case where a desired captured image is selected and displayed after automatically storing the captured image. However, when a television image is captured, the captured image can be immediately displayed as a still image. FIG. 6 is a processing flow of still display of the captured image, and the processing from step 101 to step 104 is the same as FIG.
In step 104, if a keyword is included in the TV sound, the voice recognition control unit 14 stores the TV image at that time as a captured image in the memory 15, and the video processor 10 stores it in the memory 15 instead of the TV image being received. The captured image is switched to still image display (step 301). Thereafter, the display of the captured image is continued until a still image display cancel operation is performed (step 302).
As described above, according to the present invention, a desired television image can be automatically captured and displayed.
In addition, according to the present invention, a desired television image can be viewed carefully by automatically capturing a desired television image and statically displaying it.
Further, according to the present invention, a desired television image captured by a simple operation can be selected and displayed.
Although the embodiments have been described for the case where the present invention is applied to digital TV broadcasting, it is needless to say that the present invention can also be applied to analog TV broadcasting.

It is embodiment explanatory drawing of this invention. It is a block diagram of the digital television receiver provided with the automatic capture function of the television image of this invention. It is a storage example of a captured image. It is the flow of the television image automatic capture process which captures and preserve | saves a desired television image automatically. It is a selection display flow of a capture image for selecting and displaying a desired capture image. It is a static display processing flow of a captured image. It is explanatory drawing in the case of packetizing and multiplexing the audio elementary stream Audio ES and video elementary stream Video ES of one broadcast program. It is explanatory drawing of the program arrangement | sequence information SI.

Explanation of symbols

2 Front end part 3 Baseband part 4 Data separation part 5 Audio decoding part 6 Video decoding part 7 Information data decoding part 8 Control part (host microcomputer)
DESCRIPTION OF SYMBOLS 10 Video processor 12 Display apparatus 13 Buffer part 14 Voice recognition control part 15 Memory 16a Keyword setting button 16b Capture list call button 16c Capture image selection button

Claims (6)

In a TV image automatic capture device that automatically captures and displays a desired TV image,
Means to set keywords according to the TV image to be captured,
Speech recognition means for determining whether or not the keyword is included in the television sound;
TV image holding means for capturing and storing a TV image corresponding to the TV sound including the keyword,
A display device for displaying the stored television image;
A TV image automatic capture device characterized by comprising: The television image holding means is
TV image storage means for storing the latest TV image for a predetermined time,
Means that, when the keyword is detected, means for reading out and saving a television image from a time before the detection time as a capture image from the television image storage means;
The television image automatic capture device according to claim 1, further comprising: Means for requesting a list of stored captured images;
Means to display a list of captured images upon request,
Means for selecting a desired captured image from a list display and displaying it on the display device;
The television image automatic capture device according to claim 1, further comprising: In a TV image automatic capture device that automatically captures and displays a desired TV image,
Means to set keywords according to the TV image to be captured,
Speech recognition means for determining whether or not the keyword is included in the television sound;
Means for statically displaying a television image corresponding to the television sound on a display device when the keyword is included in the television sound;
A TV image automatic capture device characterized by comprising: In a TV image automatic capture method for automatically capturing and displaying a desired TV image,
Set keywords according to the TV image to be captured,
Determine whether the keyword is included in the TV sound,
Capture and display TV images according to TV sound that contains the keywords,
A method for automatically capturing TV images. Request a list of saved captured images,
Displays a list of captured images upon request,
Select and display the desired captured image from the list display.
The television image automatic capturing method according to claim 5, wherein:

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