KR100233021B1 - Method and apparatus for printing information of television receiver - Google Patents

Abstract

The present disclosure relates to an information printing method and apparatus for a television receiver which extracts subtitles or text information provided by a broadcasting station and prints them on recording paper through a printer.

The information printing apparatus of the disclosed television receiver comprises: key input means provided with a print mode key for extracting and printing a predetermined information code; A microprocessor for decoding the information code extracted through the data slicing means according to whether the print mode key is selected and reading the corresponding information data from the font ROM; Character / subtitle data processing means for processing the read character data as serial print data and transmitting the same as serial print data; An interface device for transferring the transmitted serial print data in synchronization with the serial clock; It includes a printer that prints the transmitted print data on a recording sheet, and accordingly, it is convenient to print, store, and view with a printer when the information is quickly changed before reading a predetermined information screen provided by a broadcasting station or when the necessary information is not viewed. Surname is provided.

Description

Method and apparatus for printing information on television receiver

The present invention relates to an apparatus for printing and viewing information transmitted from a satellite, television or euro television broadcasting system. More particularly, the present invention relates to subtitle information that is easy to be missed from an over-the-air signal received through a television receiver or a satellite broadcasting receiver. An information printing method and apparatus for a television receiver which can print and store text information as necessary.

In general, broadcasting stations transmit various types of information such as television guides, news, stock quotes, and subtitle information or text information corresponding to the 21st line of the vertical retracement period for the hearing impaired, the foreigner, or the general viewer. It will be sent out.

In addition, a television receiver on the receiving side having built-in teletext and caption functions extracts caption and text information displayed on the 21st line of the vertical retrace period from the composite video signal transmitted from a broadcasting station, and displays it on the screen. By giving, the viewer can obtain various kinds of information necessary.

However, in a television receiver of a receiver having such a character and a caption function, a caption or character corresponding to a video screen for a hearing impaired person or a foreigner is displayed on the screen, but this is the speed of the caption information or the character information. For viewers with low text decode ability at high speed, or when they cannot watch the screen of the time zone, they can't use the function of the caption sufficiently by changing to the next screen before deciphering all subtitles, text, or before watching the screen. Often missed a lot of information.

As such, a device as shown in FIG. 1 is used to receive and display various types of information transmitted from a broadcasting station on a screen.

The apparatus shown in Fig. 1 will be described as an example of a caption / character information display apparatus in a conventional television receiver.

Referring to FIG. 1, a tuner 100 that tunes a television broadcast signal received through an antenna ANT to a corresponding channel, an image detector 101 that detects the tuned broadcast signal and outputs it as a composite video signal. And an image processor 107 for processing the luminance (-Y) and chroma signals (RY, GY, BY) of the composite image signal and outputting them as screen image signals, and the composite image signal detected by the image detector 101. Subtitles and characters encoded from the sync detector 103 for extracting and outputting the vertical sync and horizontal sync signals, the font ROM 105 storing the font data, and the composite video signal detected by the image detector 101. A data slice unit 102 for extracting a code, and a corresponding subtitle stored in the font ROM 105 at a corresponding address by decoding the extracted subtitle and character code according to the separated and input vertical and horizontal synchronization signals. , Text day A microprocessor 104 for reading and outputting a data and generating a switching signal, an on-screen display generator 106 for outputting the output caption and text data as an on-screen video signal, and the microprocessor 104 of the microprocessor 104. A switching unit 108 for mixing and outputting the screen image signal processed by the image processing unit 107 and the on-screen text image signal generated by the on-screen display generator 106 according to the switching signal, and the mixed image signal is sufficient. And a color signal amplifier 109 for amplifying to a size and displaying it on the color receiver 110.

In the caption / text information display apparatus of the conventional television receiver configured as described above, the television broadcast signal received through the antenna ANT is first tuned to the corresponding channel through the tuner 100 and input to the image detector 101.

The image detector 101 detects an input broadcast signal of the corresponding channel and provides the composite image signal to the image processor 107, the synchronization detector 103, and the data slicer 102 as a composite image signal.

The image processor 107 processes the input composite image signal into a luminance (-Y) signal and a chroma signal (RY, GY, BY) to provide the switching unit 108, and the synchronization detector 103 provides an input composite image. The vertical synchronization signal and the horizontal synchronization signal are extracted from the signal and provided to the microprocessor 104 to be described later.

On the other hand, the data slice unit 102 extracts the encoded subtitle code or character code carried in the vertical retrace period of the composite video signal detected by the image detector 101 and provided to the microprocessor 104.

The microprocessor 104 decodes the encoded subtitles or character codes inputted from the data slice unit 102, reads the characters and subtitle information stored in the font ROM 105 at the corresponding addresses, and synchronizes the detection unit 103. Based on the vertical and horizontal synchronous signal input separately from the) to provide the read character, the caption information to the on-screen display generating unit 106 and the color image capillary 110 with the video signal, the character, caption information It generates a switching signal to display on the.

The on-screen display generator 106 processes the input caption information as an on-screen color signal R _T , G _T , and B _T and provides it to the switching unit 108.

Accordingly, the switching unit 108 mixes the on-screen color signal for the character and subtitle information input from the on-screen display generator 106 and the chroma signal of the image processor 107 by the switching signal of the microprocessor 104. The color signal amplifier 109 is provided.

The color signal amplifier 109 amplifies the input chroma signal (-Y, RY, GY, BY) and the color signal for character or subtitle information to a sufficient size and displays the result on the screen of the color receiver 110, and as a result, A hearing impaired person or a foreigner and a general viewer can read a subtitle corresponding to a video screen and obtain necessary character or subtitle information from a broadcasting station.

In the above-described television receiver with a built-in character and subtitle function, a subtitle or various information (news, TV guide, stock information) corresponding to a video screen is extracted from a television broadcast signal, subtitled, and displayed on the screen. You can see that you get the information you want.

However, such a television receiver has a function of displaying subtitles or characters on the screen for the hearing impaired, foreigners, etc., but this is the case of viewers who have low character decoding ability when the caption information or character information is fast and the screen of the time zone. In the case of not looking at the screen, the screen is changed to the next screen before decoding all the subtitles or characters, or the screen is watched. As a result, there is a problem in that the necessary information is missed.

Therefore, even if the character information or the subtitle information displayed on the screen is continuously changed, it is preferable to apply a device capable of recording, storing and viewing desired various necessary information each time without missing necessary information.

Accordingly, the present invention excludes the general function of displaying only various necessary information provided by a broadcasting station on the screen in the above-described conventional technology, and as one aspect of the present invention, does not miss various necessary information transmitted from a broadcasting station. It is an object of the present invention to provide a method and apparatus for printing information on a television receiver which can be recorded, stored and viewed separately while being displayed on the screen.

In another aspect of the present invention, there is an object of automatically printing and storing necessary information transmitted from a broadcasting station according to the viewer's information output selection at a time when the television receiver is not being watched.

1 is a block diagram showing a display apparatus for caption / character information in a conventional television receiver;

Fig. 2 is a block diagram showing an embodiment provided in the description of the printing apparatus for caption / text information in the television receiver of the present invention;

3 is a signal flow diagram illustrating an embodiment of a caption / text information printing method in the television receiver of the present invention.

<Description of the symbols for the main parts of the drawings>

100: tuner 101: image detector

102: data slice unit 103: synchronous detection unit

104: microprocessor 105: font ROM

106: on-screen display generator 107: image processing unit

200: text / subtitle data processing unit 201: interface device

202: Printer

According to an aspect of the present invention, there is provided a method of printing an information receiver of a television receiver, the method comprising: searching for the presence or absence of an information code from a broadcast signal provided with a printer device outside the television receiver; Determining whether information output is selected when the information code is received; If the information output is selected, reading a character corresponding to the received information code from a font ROM and processing it as print data; And transmitting the processed print data to the printer device to print on a recording sheet.

Preferably, an information code is received from the broadcast signal, and if the received information code is a specific information code, the specific information is processed and printed as print data regardless of whether the information output is selected.

Preferably, when specific information is received from the broadcast signal, the specific information is printed based on a viewer's selection.

Preferably, the specific information is characterized in that the text data for news, broadcast guide, stock information.

The information printing apparatus of the television receiver according to another aspect of the present invention for achieving the above objects, extracts a predetermined information code from the broadcast signal through the data slicing means and the character / corresponding to the extracted predetermined information code; A character / caption function television receiver for reading caption data from a font ROM and displaying the video signal on a screen, comprising: key input means having a print mode key for extracting and printing the predetermined information code; A microprocessor which decodes a predetermined information code extracted from the data slicing means and reads the corresponding information data from the font ROM according to whether the print mode key of the key input means is selected; Character / subtitle data processing means for processing the corresponding information data read from the microprocessor as serial print data and transmitting the same through a line with a serial clock; An interface device for interfacing the transmitted serial print data in parallel according to the serial clock; And a printer for printing the parallel print data obtained by conversion at the interface device on a recording sheet.

The apparatus may further include a line jack for connecting and separating the serial data line and the serial clock line between the character / subtitle data processing means and an interface device.

Preferably, the interface device includes serial / parallel conversion means for converting the serial print data generated by the character / subtitle data processing means and input through the line jack into parallel print data based on the serial clock; And printer driving means for driving the printer to print on the recording paper according to the converted parallel print data.

In this way, it can be seen that it is possible to accurately print, manage, and store through a printer without missing subtitles or specific character information corresponding to video signals transmitted from broadcasting stations.

As a result, a subtitle or a specific information screen provided by a broadcasting station may have a convenient advantage of being printed and viewed by a printer even if the viewer quickly changes before decoding or cannot watch at that time.

And, there may be a plurality of embodiments of the present invention, hereinafter will be described in detail with respect to the most preferred embodiment.

Through this preferred embodiment will be able to better understand the objects, features and advantages of the present invention.

Hereinafter, exemplary embodiments of an information printing method and apparatus for a television receiver according to the present invention will be described in detail with reference to the accompanying drawings.

In addition, the technique of the present invention extracts caption / text information included in a broadcast signal or a reproduced video signal, such as a video cassette recorder, a television receiver, a satellite broadcast receiver, and a digital video disc player with a built-in character and subtitle function, and displays it on the screen. It can be applied to various kinds of video display devices.

Thus, FIGS. 2 and 3 used in the description are not a device for printing a specific information by providing a printing function to a specific video display device, but receiving and inputting a broadcast signal (airwave) or a reproduced video signal to extract specific information. Drawings focused on the various products shown in.

In the following description, an example is used for a television receiver having a built-in character and subtitle function that extracts various necessary information from a broadcast signal transmitted from a broadcasting station and displays it on a screen together with a video signal.

In addition, in each figure used for description, the same component may be attached | subjected and shown about the component same as FIG. 1, and the overlapping description may be abbreviate | omitted.

FIG. 2 is a block diagram illustrating an embodiment provided in a description of a printing apparatus for caption / text information in a television receiver according to the present invention.

According to the present embodiment, a caption code and a specific character code are extracted from a television broadcast signal transmitted from a broadcasting station through the data slice unit 102, and the data corresponding to the extracted caption code and a specific character code are synchronized with the synchronous detection unit ( The switching unit 108 and the color signal amplifier unit together with the image signal processed by the image processing unit 107 through the on-screen display generating unit 106 by reading from the font ROM 105 by the vertical / horizontal synchronization signal of 103. In a television receiver having a character / subtitle function that is switched and amplified through the display to be displayed on the screen of the color receiver 110, the function key for selecting various functions of the television receiver, the caption code, and the character code are selected. A key input unit 205 for selecting and inputting a print mode key for extracting and printing, and a data slice according to whether the print mode key is selected or not A microprocessor 104 which decodes the subtitle code and the specific character code extracted by the unit 200 and reads and outputs the corresponding character and subtitle information from the font ROM 105, and the subtitle code and the specific character code. A character / subtitle data processing unit 200 for processing subtitles and character data to be serial printed data SDA and transmitting them through the respective line jacks 203 and 204 together with the serial clock SCL. Interface devices 201 and 204 which are freely connected to 203 and 204 so as to convert the transmitted serial print data SDA into parallel print data according to the serial clock SCL and interface the parallel print data. It consists of a printer 202 which prints on a recording sheet.

In the above, the interface device 201 prints the serial print data SDA generated by the character / subtitle data processing unit 200 through the line jacks 203 and 204 in synchronization with the serial clock SCL. And a serial / parallel conversion unit 201a for converting the data, and a printer driver 201b for driving the printer 202 to print in accordance with the converted parallel print data.

3 is a signal flow diagram illustrating an embodiment of a method for printing caption / text information in a television receiver according to the present invention. As shown therein, initializing an interface device 201 of a printer 202 when a television receiver is started. (ST100), retrieving whether there is an information broadcast via the data slice unit 102 after the initialization is canceled (ST101), and retrieving whether a print mode key from the key input unit 205 is selected if the information broadcast exists. (ST102), searching for whether the print mode key is selected and immediately outputting the specific information if there is specific information (ST103); and in the specific information output mode, specific information is transmitted through the data slice unit 102. A step of retrieving whether it has been received (ST104), and if the specific information is received or if the print mode key is selected, the specific character information code Or decoding the subtitle information code and reading the corresponding information data from the font ROM 105 (ST105), processing the transmitted information as serial print data, and transmitting (ST106), (ST107) and And printing the transmitted serial print data via the printer 202 (ST108).

Preferred embodiments of the present invention made as described above will be described in more detail below.

First, when the operating power is supplied and the television receiver is started, the microprocessor 104 initializes the printer interface device 201 to be described later for a predetermined time (ST100).

When the initialization is released after a certain time, the microprocessor 104 searches whether the broadcasting station transmits the information broadcast through the data slice unit 102, for example, a caption code corresponding to a video signal or a specific news, broadcast guide, It is checked whether or not the character code such as stock information is transmitted together with the broadcast signal (ST101).

If there is no information broadcasting in step ST101, a general function, for example, a broadcast signal transmitted from a broadcasting station is processed by the image detector 101, the image processor 107, the switching unit 108, and the color signal amplifier 109 to color. When the information broadcast, that is, the caption code or the specific character code is detected and input from the data slice unit 102 as a result of displaying it on the receiving tube 110 and searching in step ST101, the print mode key is changed through the key input unit 205. It is to be checked whether is set (step ST102).

If the print mode key is set in step ST102, the microprocessor 104 decodes a subtitle code or a specific character code extracted and input from the data slice unit 102 and has a corresponding address, and the font ROM 105 has a corresponding address. Read the character information or subtitle information in the corresponding address stored in the step (ST105) and turn on the read character information and subtitle information in synchronization with the vertical synchronization and horizontal synchronization signals input separately from the synchronization detection unit 103; The screen display generating unit 106 and the character / subtitle data processing unit 200 are provided.

The subtitle information or the specific character information generated by the microprocessor 104 is processed as an on-screen color signal by the on-screen display generator 106 and mixed with the chroma signal of the image processor 107 through the switching unit 108. The mixed signal is displayed on the screen of the color receiver 110 through the color signal amplifier 109.

Meanwhile, the character / subtitle data processing unit 200 such as an I ² C (Integrated Injection Controller) processes the character or subtitle information input from the microprocessor 104 as serial print data (SDA), for example, an ASCII code (step; ST106 is outputted to the interface device 201 through the line jack 204, and a serial clock (SCL) generated in synchronization therewith is generated and transmitted to the interface device 201 through the line jack 203 (step ST107). .

The interface device 201 serves to provide the printer 202 with the serial print data SDA input from the character / subtitle data processing unit 200 of the television receiver in synchronization with the serial clock SCL.

In other words, the interface device 201 includes a serial / parallel converter 201a and a printer driver 201b.

Accordingly, the serial / parallel conversion unit 201a converts the serial print data SDA input through the line jack 204 into parallel data in synchronization with the serial clock SCL input through the line jack 203. The converted parallel print data is provided to the printer 202 through the printer driver 201 to print on the recording paper.

If the print mode key from the key input unit 205 is not set as a result of the search in step ST102, it is searched whether or not the specific mode is output as soon as the specific information is extracted from the data slice unit 102 (step ST103).

In other words, when the print mode key is not set from the key input unit 205 and specific information such as news is extracted from the data slice unit 102, the mode can immediately output and print it. The authorization will be retrieved.

If the result of the search in step ST103 is not the output mode of the specific information, it performs the function of the general television receiver as described above, and if the output mode is the specific information, search for the specific information through the data slice 102, for example, sports news. There is a search for whether there is an error (step 104).

If there is a sports news in step ST104, the steps ST105 to ST108 are sequentially performed to print information on the sports news through the printer 202. FIG.

On the other hand, as a comparative example, by displaying only a subtitle or text information transmitted from a conventional technology, that is, a broadcasting station, on the screen, it is necessary to miss desired information when the viewer with low text decoding ability or the time zone screen is not observed. Unlike the present invention, it can be seen that the present invention prints and stores through a printer as necessary without watching subtitles or specific information corresponding to an image signal transmitted from a broadcasting station.

As a result, the present invention provides the convenience of printing, storing and viewing with a printer even if a subtitle or a specific information screen is quickly changed before being decoded or if the necessary information is not viewed at that time. There is a number.

As described above, in the present exemplary embodiment, subtitle information or specific information corresponding to an image provided by a broadcasting station may be viewed on a screen by a user's selection, or may be printed and viewed through a printer as necessary. .

It is clear from the above description that, according to the information printing method and apparatus of the television receiver of the present invention, even when a subtitle or specific information corresponding to a video signal transmitted from a broadcasting station changes quickly or cannot be viewed in a necessary time period, There is a convenient advantage that can be printed, stored and viewed with a printer every time without missing the necessary information.

Claims (2)

In a television receiver for extracting a predetermined information code from a broadcast signal through data slicing means and reading data corresponding to the extracted predetermined information code from a font ROM and displaying it on a screen together with a video signal. : Key input means having a print mode key for extracting and printing the predetermined information code; A microprocessor for decoding the predetermined information code extracted from the data slicing means and reading the information data from the font ROM according to whether the print mode key is selected; Character / subtitle data processing means for processing the corresponding information data read by the microprocessor as serial print data and transmitting the same through a line with a serial clock; An interface device for interfacing the transmitted serial print data in synchronization with the serial clock; And A printer for printing the print data converted in the interface device on a recording sheet; The interface device may include serial / parallel conversion means for converting the serial print data input from the character / subtitle data processing means into parallel print data based on the serial clock; And And printer driving means for driving the printer according to the converted parallel print data to print on a recording sheet. The method of claim 1, And a line jack for connecting and separating said serial data line and said serial clock line between said character / subtitle data processing means and an interface device.

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