KR19990019203A - Subtitle Signal Voice Converter of TV - Google Patents

Abstract

The present invention provides a caption signal-to-speech apparatus for a television that recognizes a character pattern of a caption signal received from a television broadcast and outputs audio data corresponding to the recognized character pattern.

To this end, the present invention provides an image processing means (6,8,10,12,14,16) for processing a video signal of a television broadcast tuned from the tuning means (2,4), and the voice of the tuned television broadcast. In a television equipped with audio processing means (18, 20) for audio processing a signal,

Caption extraction processing means (22,24) for extracting and capturing caption signals from the image processing means (6,8,10,12,14,16) and a signal for detecting a text font of the extracted caption signals; The caption font detection processing means 28, which performs the processing, recognizes a character pattern of the character font of the caption signal signal-processed by the caption font detection processing means 28, and extracts the voice data corresponding to the recognized character pattern. Caption sound conversion processing means 30 for outputting speech reproduction to the sound processing means 18 and 20, and setting a function for setting a caption sound output mode for converting and outputting the caption signal received from the television broadcast. When the caption sound output mode is set by the means 32 and the function setting means 32, the caption font detection processing of the caption font detection processing means 28 and the caption font of the caption audio conversion processing means 30 are performed. Voice for And a control means 34 for controlling the exchange operation, characterized in that configured.

Description

Subtitle Signal Voice Converter of TV

The present invention relates to a caption signal-to-speech conversion apparatus of a television, and more particularly, to a caption signal of a television which recognizes a text form of a caption signal received and included in a video signal of a television broadcast, and converts and outputs it to a speech form. It relates to a voice conversion device.

As is well known, televisions that tune to and reproduce over-the-air television broadcast signals are designed to reproduce and reproduce RF signals of predetermined broadcast channels among a plurality of broadcast channels transmitted from multiple television stations. The signal includes a caption signal necessary for news or other broadcasting programs to be transmitted together.

In the case of a television receiving a caption signal transmitted by being included in the video signal of the television broadcast, the caption signal is detected from the brightness signal of the video, and the video signal processor synthesizes the composite video signal and outputs the combined video signal. And the subtitles are displayed.

However, in the case of a caption signal received and displayed on such a television, only a character transmitted from a television station is displayed on the screen. Thus, for example, a user who cannot read a text quickly, such as a person who does not know the text or an elderly person, cannot see the screen. The disadvantage is that the contents of the displayed subtitles cannot be easily grasped.

Accordingly, the present invention has been made in view of the above-described circumstances, and the present invention provides a caption signal voice of a television which recognizes a character pattern of a caption signal received from a television broadcast and outputs audio data corresponding to the recognized character pattern. The purpose is to provide an inverter.

In order to achieve the above object, according to the apparatus for converting a caption signal of a television according to the present invention, there is provided a video processing means for processing a video signal of a television broadcast tuned from a tuning means, and the audio signal of the tuned television broadcasting. A television comprising audio processing means for processing audio, comprising: caption extraction processing means for extracting and processing a caption signal from the image processing means, and a caption font for performing signal processing for detecting a text font of the extracted caption signal; Recognizing character pattern of the character font of the caption signal processed by the caption font detection processing means and the caption font detection processing means, and outputting sound data corresponding to the recognized character pattern to the speech processing means so as to reproduce speech. Subtitle audio conversion processing means for converting the subtitle signal received from the television broadcast into voice conversion. A function setting means for keying a caption audio output mode for output, and a caption font detection processing operation of the caption font detection processing means and a caption of the caption audio conversion processing means when the caption audio output mode is set by the function setting means. Provided is a caption signal-to-speech apparatus for a television, comprising control means for controlling a voice-conversion operation for a font.

According to the present invention configured as described above, a character pattern of a character font for a caption signal extracted from a video signal of a television broadcast on a television is recognized, and the sound data stored in the voice memory is read by the caption recognition data according to the recognition result. To make the voice output.

1 is a block diagram showing a caption signal-to-speech apparatus for a television according to the present invention;

2 is a block diagram showing a detailed configuration of the caption font detection processing unit shown in FIG. 1 according to a preferred embodiment of the present invention;

3 is a block diagram showing a detailed configuration of the caption audio conversion unit shown in FIG. 1 according to a preferred embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

2: tuner, 4: video IF section,

6: image detector, 8: image amplifier,

10: color signal processing unit, 12: luminance signal processing unit,

14: matrix circuit section, 16: video output section,

18: voice detector, 20: voice signal processor,

22: subtitle signal extraction unit, 24: subtitle signal processing unit,

26: synchronous separation unit, 28: subtitle font detection processing unit,

30: subtitle voice conversion processing section, 32: function setting section,

34: control unit, 36: sample / hold circuit unit,

38: memory controller, 40: clock generator,

42: field memory, 44: subtitle patch recognition processing unit,

46: voice memory, 48: voice conversion control unit,

50: signal conversion section, A1 to An: line memory,

B1 to Bn: pulse generator.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a caption signal-to-speech apparatus for a television according to the present invention. In the apparatus of the present invention, reference numeral 2 denotes channel channel selection data for tuning a predetermined broadcast channel from the control unit 34, which will be described later. The tuner outputs an RF signal of the corresponding broadcast channel by amplifying the high frequency amplification process, and mixes with the local oscillation frequency signal generated by the channel tuning data and outputs it in the form of an intermediate frequency signal. And an image IF unit for processing an intermediate signal amplified video signal.

Further, reference numeral 6 denotes an image detector for detecting a video signal from the intermediate frequency-amplified television broadcast signal, and 8 denotes a signal amplification of the detected television broadcast signal, and a color difference signal. An image amplification unit separated by a luminance signal is shown.

Reference numeral 10 denotes a color signal processing unit for restoring a color subcarrier signal by detecting a color burst signal from the separated color difference signal to perform color demodulation and color demodulation processing, and 12 denotes a luminance adjustment for the separated luminance signal. And a luminance signal processing section for performing contrast adjustment.

Reference numeral 14 converts the color demodulated color signal and the luminance signal into R / G / B signals and converts the caption signal from the caption signal processing section 24 to be described later with the R / G / B signal. 16 shows a matrix circuit section for synthesizing and outputting, and 16 shows an image output section for amplifying and driving a predetermined image and subtitles on a video screen by amplifying and driving the synthesized R / G / B signal.

Reference numeral 18 denotes a voice detector for detecting an audio signal from a television broadcast signal intermediately amplified by the video IF unit 4, and 20 denotes a voice signal according to the detected television broadcast. The audio signal is processed and output, and in accordance with the caption audio output mode, the audio signal according to the television broadcast is muted by the muting control signal MT, and the caption audio signal AU from the caption audio conversion processing unit 30 to be described later. Represents a voice signal processor for receiving and processing the audio signal.

Reference numeral 22 denotes a caption signal extracting unit for extracting a caption signal from the luminance signal from the luminance signal processing unit 12, and 24 denotes the matrix circuit unit through a signal processing operation such as noise removal for the extracted caption signal. A caption signal processing section outputted to (14) is shown, and 26 denotes a sync separation section for separating the sync signal from the video signal from the video amplifying section (8).

Reference numeral 28 denotes a caption font detection processor for performing digital processing on each scan line constituting the caption signal so that the text font for the caption signal from the caption signal processor 24 can be detected. Indicates.

Here, the caption font detection processing unit 28 is a sampling clock provided from the clock generation unit 40 of the memory control unit 38 which describes the caption signal from the caption signal processing unit 24 as shown in FIG. A sample / hold circuit section 36 for sampling and holding and digitally converting by the CK1 and the write enable signals WE1 to WEn are respectively applied to scan caption signals at a recording speed synchronized with the synchronous clock CK2. A plurality of line memories A1 to An and a plurality of line memories which are stored in units of lines and which are read out at read speeds synchronized with the synchronous clock CK2 by receiving the read enable signals RE1 to REn, respectively. Pulse signals corresponding to the subtitle signals generated through the plurality of pulse generators B1 to Bn and the plurality of pulse generators B1 to Bn for converting the scanning lines of the subtitle signals through A1 to An into the form of pulse signals. To store the image field unit The clock generator 40 provides a sampling clock CK1 and a synchronization clock CK2 for digital conversion of the caption signal and memory recording / reading under the control of the de memory 42 and the controller 34 to be described later. And a memory controller 38 for providing a recording / reading enable signal for the recording / reading operation of the caption data.

Further, reference numeral 30 receives the caption pulse data from the caption font detection processor 28 and recognizes the pattern of the text font for each caption signal, thereby reading out the speech data corresponding to the recognized character pattern. A caption audio conversion processing unit supplied to the audio signal processing unit 20 is shown.

Here, the caption audio conversion processor 30 receives caption pulse data from the field memory 42 of the caption font detection processor 28 to recognize the caption pattern for each caption character as shown in FIG. 3. The caption pattern recognition processor 44 performing an operation for performing the operation, a voice memory 46 storing a plurality of voice data for voice conversion of the text of the caption signal, and the control unit 34 to be described later. A voice conversion control unit 48 for reading out and outputting corresponding voice data from the voice memory 46 based on the subtitle recognition data according to the subtitle pattern processed by the processing unit 44, and the voice converted subtitle signal. And a signal converter 50 for analog converting the corresponding voice data and outputting the analog data to the voice signal processor 20.

Also, reference numeral 32 is a matrix button unit provided in a remote control unit for remote control or a predetermined control panel of the main body, and executes a caption audio output mode for converting and outputting a caption signal transmitted together from a television broadcast signal to an audio signal. A function setting section for performing key operation is shown.

Reference numeral 34 denotes a caption font detection processing operation of the caption font detection processing section 28 and a caption of the caption audio conversion processing section 30 under execution of the caption audio output mode by key operation of the function setting section 32. A control unit for controlling the voice conversion processing operation and outputting a muting control signal MT for muting the voice signal according to the television broadcast to the voice signal processing unit 20.

Next, the operation of the present invention made as described above will be described in detail with reference to the accompanying drawings.

First, when a television broadcast signal of a predetermined broadcast channel tuned through the tuner 2 is amplified by an intermediate frequency by the image IF unit 4, the image detector 6 detects the video signal from the television broadcast signal. The image amplifying unit 8 amplifies the separated image signal and separates the color difference signal and the luminance signal.

Then, the color signal processing unit 10 and the luminance signal processing unit 12 perform color demodulation processing for the separated color difference signal and luminance adjustment operation of the luminance signal, respectively, while the caption signal extraction unit 22 performs the luminance. The caption signal is extracted from the signal. As the caption signal processing unit 24 outputs the extracted caption signal through signal processing such as noise removal, the matrix circuit unit 14 synthesizes the color demodulation and luminance adjustment color signal and luminance signal, The caption signal is synthesized and output.

As a result, the image output unit 16 is amplified and driven by the combined signal of the R / G / B signal and the subtitle signal synthesized by the matrix circuit unit 14 to reproduce the subtitles with the predetermined image on the image screen. Be sure to

In this state, when the caption audio output mode is keyed by the function setting section 32, the control section 34 enables the operation of the memory control section 38 of the caption font detection processing section 28, and samples The hold circuit section 36 performs digital conversion by sampling and holding processing by the sampling clock CK1 generated from the clock generation section 40 of the memory control section 38, and performs the digital conversion of the first to nth line memories A1. (An) memorizes each of the digitally converted caption signals in units of scan lines, while each scan line of caption signals read out from the first to nth line memories (A1 to An) generates first to nth pulses. The subtitle pulse data is converted into subtitle pulse data through the sections B1 to Bn and stored in the field memory 42.

Subsequently, the caption pattern recognition processing unit 44 of the caption audio conversion processing unit 30 receives caption pulse data from the field memory 42 to recognize the caption pattern for each character font to generate caption recognition data. The voice conversion control unit 48 is enabled by the control unit 34 to read out and output corresponding voice data from the voice memory 46 based on the caption recognition data. 50 converts the voice data read from the voice memory 46 into analog and outputs the analog data to the voice signal processor 20.

Accordingly, the audio signal processing unit 20 mutes the audio signal of the television broadcast by the muting control signal MT from the control unit 34, and the subtitles from the subtitle sound conversion processing unit 30. The caption audio signal AU corresponding to the signal is subjected to audio signal processing so that the audio can be reproduced.

According to the present invention made as described above, by recognizing the character pattern for the caption signal included in the video signal of the television broadcast on the television, the audio signal corresponding to each caption character can be extracted and reproduced, Even if the subtitle displayed on the screen is not read, the content of the subtitle signal can be easily grasped.

Claims (3)

Image processing means (6,8,10,12,14,16) for processing the video signal of the television broadcast tuned from the tuning means (2,4), and audio processing of the audio signal of the tuned television broadcast. In a television having sound processing means (18, 20), Caption extraction processing means (22,24) for extracting and processing a caption signal from the image processing means (6,8,10,12,14,16); Caption font detection processing means (28) for performing signal processing for detecting the character font of the extracted caption signal; Recognizes the character pattern of the character font of the subtitle signal signal-processed by the subtitle font detection processing means 28, and reproduces the voice data corresponding to the recognized character pattern to the voice processing means (18, 20). Subtitle audio conversion processing means 30 for outputting possible, Function setting means (32) for setting a subtitle audio output mode for voice conversion of the subtitle signal received from the television broadcast and outputting the same; When the caption audio output mode is set by the function setting means 32, the caption font detection processing of the caption font detection processing means 28 and the voice conversion operation of the caption font of the caption audio conversion processing means 30 are performed. Subtitle signal speech conversion device for a television, characterized in that it comprises a control means for controlling (34). 2. The caption font detection processing means (28) according to claim 1, wherein the caption font detection processing means (28) includes a sample / hold circuit portion (36) for sampling and holding the caption signals from the caption extraction processing means (22, 24) and digitally converting them, A plurality of line memories (A1 to An) for storing and reading signals in units of scan lines and a plurality of lines for converting subtitle signals through the plurality of line memories (A1 to An) into pulse forms in units of scan lines. A field memory 42 for storing pulse signals corresponding to the caption signals converted through the pulse generators B1 to Bn, the plurality of pulse generators B1 to Bn in image field units, and for data processing of the caption signals And a memory control unit (38) for providing an operation clock and a memory control signal. 3. The method according to claim 1 or 2, wherein the caption audio conversion processing means (30) receives caption pulse data from the field memory (42) constituting the caption font detection processing means (28) to recognize the caption pattern. The caption pattern recognition processor 44 performing an operation for performing the operation, a voice memory 46 storing a plurality of voice data for voice conversion of the caption signal, and the caption recognition data recognized by the caption pattern recognition processor 44. A voice conversion control unit 48 for reading out and outputting corresponding voice data from the voice memory 46, and converting the voice data corresponding to the voice-converted subtitle signal to analog conversion to the voice processing means 18,20. Subtitle signal speech conversion device for a television, characterized in that it comprises a signal conversion unit (50) for outputting.