JPH11234611A - Method and apparatus for automatically generating index signal for video deck and recording medium recording the method - Google Patents

Abstract

(57) [Problem] To provide a method and apparatus for automatically detecting a topic change from video content and writing an index signal when recording on a video deck. SOLUTION: A teletext decoder 201 receives a video image signal 211 from a video deck 205, and outputs subtitle information 212 of a teletext 999 channel. The collating unit 202 refers to the topic conversion word list 213 stored in the topic conversion word dictionary 203, checks whether the head of the subtitle information 212 includes a topic conversion word, and outputs a topic conversion signal 214 if it is included. I do. Upon receiving the topic conversion signal 214, the index signal generation unit 204 generates an index write signal 215 and outputs the index write signal 215 to the video deck 205 using infrared rays for remote control.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for automatically generating an index signal for a video deck for automatically inserting an index signal at a turning point when a video is recorded on the video deck.

[0002]

2. Description of the Related Art A home video deck generally used at present has a function of recording an index signal on a video tape. This indicates the starting point of the recording,
Depending on the model, an index signal can be inserted by pressing a button during recording. When an index signal is inserted, it becomes possible to perform fast forward / rewind to the next index signal during video playback.

Conventionally, as a method of writing an index signal to a video tape, there are a method of automatically writing at the start of recording and a method of directly writing by a user using a button of a remote controller.

[0004]

However, in the above-mentioned conventional method of writing an index signal to a video tape, the index signal is written automatically at the start of recording or is directly written by a user using a button of a remote controller or the like. Could not automatically detect and write a change in topic.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and apparatus for automatically generating an index signal for a video deck for automatically detecting a topic change from video content and writing an index signal when recording on a video deck. Is to do.

[0006]

According to a first aspect of the present invention, there is provided a method for automatically generating an index signal for a VCR according to the present invention. A subtitle information is extracted from the video signal, a presence or absence of a topic conversion word in the extracted subtitle information is detected, and when a topic conversion word is detected in the subtitle information, a VCR index signal is detected. Is the most important feature.

Further, according to a second aspect of the present invention, there is provided a method for automatically generating an index signal for a VCR, the method of automatically inserting index information when a television broadcast is recorded on a VCR, wherein subtitle information is converted from a video signal. Extract, perform morphological analysis of the extracted subtitle information, and detect the presence or absence of topic conversion words in the morphologically analyzed subtitle information,
The most main feature is to generate a VCR index signal when a topic conversion word is detected in the caption information.

[0008] In a third aspect of the present invention, there is provided a video deck index signal automatic generation apparatus for automatically inserting index information when a television broadcast is recorded on a video deck, wherein caption information is converted from a video signal. Means for extracting, means for detecting the presence or absence of a topic conversion word in the extracted subtitle information, and means for generating a VCR index signal when a topic conversion word is detected in the subtitle information. Is the most important feature.

Further, according to a fourth aspect of the present invention, there is provided an automatic index signal generating apparatus for a video deck, which automatically inserts index information when a television broadcast is recorded on a video deck, wherein caption information is converted from a video signal. Means for extracting, means for morphologically analyzing the extracted caption information, means for detecting the presence or absence of topic conversion words in the morphologically analyzed caption information, and topic conversion words being detected in the caption information And means for generating an index signal for a VCR.

A recording medium on which a method for automatically generating an index signal for a video deck according to a fifth invention of the present invention is recorded is a method for automatically inserting index information when a television broadcast is recorded on a video deck. Extracting subtitle information from the signal, detecting the presence or absence of a topic conversion word in the extracted subtitle information, and generating a VCR index signal when the topic conversion word is detected in the subtitle information. The most main feature is that the procedure and the program are recorded on a recording medium readable by the computer as a program for causing the computer to execute the procedure.

Further, a recording medium on which the method for automatically generating an index signal for a video deck according to the sixth invention of the present invention is recorded is a method for automatically inserting index information when a television broadcast is recorded on a video deck. Extracting subtitle information from the signal, morphologically analyzing the extracted subtitle information, detecting the presence or absence of a topic conversion word in the morphologically analyzed subtitle information, and converting the topic into the subtitle information. The most important feature is that a procedure for generating a VCR index signal when a word is detected is recorded on a computer-readable recording medium as a program for causing a computer to execute the procedure.

In the first, third, and fifth inventions, when a video with caption information is recorded on a video deck, a topic conversion word in the caption information is detected and an index signal is created to automatically generate an index signal. Can be inserted with the index signal.

[0013] In the second, fourth and sixth inventions,
When a video with subtitle information is recorded on a VCR, part of words that are not topic conversion words are generated by decomposing the subtitle information into words by morphological analysis and then detecting topic conversion words at the word level and creating an index signal. Can be automatically inserted without erroneously detecting as a topic conversion word.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing an apparatus configuration and an operation method thereof for explaining one embodiment of the first and third aspects of the present invention.

In FIG. 1, 101 is a character information decoder, 102 is a collating unit, 103 is a topic conversion word dictionary, 104
Is an index signal generator, 111 is a video signal, 112
Is caption information, 113 is a topic conversion word list, 114 is a topic conversion signal, and 115 is an index signal.

The character information decoder 101 outputs the video signal 11
1 and outputs subtitle information 112 embedded in the video signal 111. The topic conversion word dictionary 103 outputs a topic conversion word list 113. The collation unit 102 receives the subtitle information 112 and the topic conversion word list 113, and outputs a topic conversion signal 114 if the word in the topic conversion word list 113 is included in the subtitle information 112. When receiving the topic conversion signal 114, the index signal generation unit 104
An index signal 115 is generated and output.

Here, the character information decoder 101 performs
The process of extracting the subtitle information 112 from the video signal 111 is as follows.
Rather than extracting subtitles (telops) obtained as video, it is performed by extracting so-called closed captions, which digitize and embed character information in scanning lines of the video signal 111 that are not actually displayed on the screen.
The topic conversion word list 113 output by the topic conversion word dictionary 103 is used for switching topics such as "next", "by-side", "well", "next", "next", "first", "so". List of words used.

FIG. 2 is a block diagram showing an example of application of the apparatus for explaining one embodiment of the first and third aspects of the present invention, and explaining an operation method thereof.

In FIG. 2, 201 is a character information decoder, 202 is a collating unit, 203 is a topic conversion word dictionary, 204
Is an index signal generator, 205 is a VCR, 2
11 is a video image signal, 212 is caption information, 213 is a topic conversion word list, 214 is a topic conversion signal, and 215 is an index writing signal.

The present apparatus monitors subtitle information performed on the 999 channel of teletext on a television, and sends an index signal to a video deck when a topic conversion word appears.

The teletext decoder 201 receives the video image signal 211 from the video deck 205 and outputs subtitle information 212 of the 999 channel of teletext. The collating unit 202 refers to the topic conversion word list 213 stored in the topic conversion word dictionary 203, checks whether the head of the subtitle information 212 includes a topic conversion word, and outputs a topic conversion signal 214 if it is included. I do. Index signal generator 2
04 receives the topic conversion signal 214, generates an index write signal 215, and outputs the index write signal 215 to the video deck 205 using infrared rays for remote control.

FIG. 3 is a diagram for explaining an operation method of the apparatus of FIG. This figure shows how an index write signal is output from a television news program and its subtitle information.

The three screens shown in FIG. 3 show the transition of the subtitle content from left to right. The subtitles on the first screen do nothing because they do not contain buzzwords. When the subtitle is switched to the second screen, the word “next” matches the topic conversion word, so that the topic conversion signal 214 is output, and thereby the index writing signal 215 is output.
Further, when the subtitles are switched to the third screen, there is no topic conversion word, so that nothing is performed.

It should be noted that the captions handled in this embodiment are not captions but closed captions, which are not displayed on a normal television receiver without a caption receiving function. FIG. 3 illustrates that the subtitles are displayed on the screen for the sake of explanation.

FIG. 4 is a block diagram showing an apparatus configuration and an operation method thereof for explaining one embodiment of the second and fourth aspects of the present invention.

In FIG. 4, 401 is a character information decoder, 402 is a morphological analyzer, 403 is a collating unit, 404 is a topic conversion word dictionary, 405 is an index signal generating unit,
11 is a video signal, 412 is subtitle information, 413 is a subtitle word list, 414 is a topic conversion word list, 415 is a topic conversion signal, and 416 is an index signal.

The character information decoder 401 outputs the video signal 41
1 and outputs subtitle information 412 embedded in the video signal 411. The morphological analysis unit 402 receives the subtitle information 412, performs morphological analysis, and outputs a list of words included in the subtitle as a subtitle word list 413. The topic conversion word dictionary 404 includes a topic conversion word list 414.
Is output. The collation unit 403 determines whether the subtitle word list 413 exists.
When the words in the topic conversion word list 414 are included at the head of the subtitled word list 413, a topic conversion signal 415 is output. Upon receiving the topic conversion signal 415, the index signal generation unit 405 generates and outputs an index signal 416.

This apparatus is an improvement on the apparatus shown in FIG. In the embodiment of FIG. 1, character string collation is performed to determine whether or not a topic conversion word is included in subtitles. At this time, for example, when the caption “bad” is collated with the topic conversion word “first”, they match as character string matching, so that the topic conversion signal 415 is erroneously output.

In the present apparatus, the morphological analysis unit 402 decomposes “bad” into “bad”, “koto” and “ni”. Since the matching unit 403 performs matching at the word level,
The word “bad” does not match the word “first”, and the topic change signal 41
5 is not output erroneously.

The present invention relates to an input device for inputting a video signal from a video deck, an output device for outputting an index signal to the video deck, a reading device for reading a recording medium, a topic conversion word dictionary and a recording medium. A memory device that can store a program read from and read it freely, extracting subtitle information from video signals, morphological analysis,
It is equipped with a buffer for holding data required when performing processing such as matching of subtitle information or a word list in subtitles with a topic conversion word list, and generation of an index signal, etc., and an input device and an output device thereof. 1, 2, or 4 by means of a computer that controls the apparatus, reading device, memory device, buffer, and the like based on a procedure predetermined by the above program, or a device equivalent thereto.
It is possible to appropriately execute the processing procedure or algorithm in the embodiment of the method of the present invention described with reference to the above, and the reading device reads a program for causing a computer or the like to execute the procedure or algorithm. It can be recorded on a possible recording medium, for example, a floppy disk, a memory card, an MO, a CD, a DVD, or the like, and distributed.

[0032]

As described above, according to the first, third, and fifth aspects of the present invention, when a video with subtitle information is recorded on a VCR, a topic conversion word in the subtitle information is detected. Therefore, the index signal can be automatically inserted to create the index signal.

According to the second, fourth, and sixth aspects of the present invention, when a video with subtitle information is recorded on a video deck, a topic conversion word is detected after morphological analysis of the subtitle information and indexing is performed. Since a signal is created, an index signal can be automatically inserted without erroneously detecting a part of a phrase that is not a topic conversion word as a topic conversion word.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an apparatus configuration and an operation method thereof for explaining an embodiment of the first and third aspects of the present invention.

FIG. 2 is a block diagram showing an application example of the apparatus and explaining an operation method thereof in order to explain an embodiment of the first and third inventions according to the present invention.

FIG. 3 is a diagram for explaining an operation method according to an embodiment of the first and third inventions according to the present invention;

FIG. 4 is a block diagram showing an apparatus configuration and an operation method thereof for explaining one embodiment of the second and fourth inventions according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 101 ... Character information decoder 102 ... Collation part 103 ... Topic conversion word dictionary 104 ... Index signal generation part 111 ... Video signal 112 ... Subtitle information 113 ... Topic conversion word list 114 ... Topic conversion signal 115 ... Index signal 201 ... Teletext decoder 202 ... Matching unit 203 topic conversion word dictionary 204 index signal generation unit 205 VCR 211 video video signal 212 caption information 213 topic conversion word list 214 topic conversion signal 215 index writing signal 401 character information decoder 402 ... morphological analysis unit 403 ... matching unit 404 ... topic conversion word dictionary 405 ... index signal generation unit 411 ... video signal 412 ... subtitle information 413 ... subtitle word list 414 ... topic conversion word list 415 ... topic conversion signal 416 ... index signal

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kazuo Tanaka 3-19-2 Nishi Shinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Corporation

Claims (6)

[Claims] 1. A method for automatically inserting index information when a television broadcast is recorded on a VCR, extracting subtitle information from a video signal, and detecting presence / absence of topic conversion words in the extracted subtitle information. And generating a VCR index signal when a topic conversion word is detected in the caption information. 2. A method for automatically inserting index information when a television broadcast is recorded on a video deck, comprising: extracting subtitle information from a video signal; performing morphological analysis on the extracted subtitle information; Detecting whether there is a topic conversion word in the subtitle information, and generating a VCR index signal when a topic conversion word is detected in the subtitle information. 3. A device for automatically inserting index information when a television broadcast is recorded on a VCR, means for extracting subtitle information from a video signal, and presence or absence of topic conversion words in the extracted subtitle information. And a means for generating a VCR index signal when a topic conversion word is detected in the caption information. 4. An apparatus for automatically inserting index information when a television broadcast is recorded on a video deck, comprising: means for extracting caption information from a video signal; means for morphologically analyzing the extracted caption information; Means for detecting the presence or absence of topic conversion words in the morphologically analyzed caption information; and means for generating a VCR index signal when a topic conversion word is detected in the caption information. Automatic index signal generator for VCRs. 5. A method for automatically inserting index information when a television broadcast is recorded on a video deck, a procedure for extracting subtitle information from a video signal, and the presence or absence of a topic conversion word in the extracted subtitle information. And a procedure for generating a VCR index signal when a topic conversion word is detected in the caption information.Recording the program on a computer-readable recording medium as a program for causing a computer to execute the procedure. A recording medium on which is recorded a method for automatically generating an index signal for a video deck. 6. A method for automatically inserting index information when a television broadcast is recorded on a VCR, a procedure for extracting subtitle information from a video signal, a step for morphologically analyzing the extracted subtitle information, A program for causing a computer to execute: a step of detecting the presence or absence of a topic conversion word in the morphologically analyzed subtitle information; and a step of generating a VCR index signal when a topic conversion word is detected in the subtitle information. A recording medium on which a method for automatically generating an index signal for a video deck is recorded.