KR19990004713A - Fax transmission device for broadcasting video signals - Google Patents

Abstract

The present invention converts data from a television with a transmission / reception function of a fax information through a fax modem into a fax format having a character form for an image according to a television broadcast of a predetermined channel and transmits the data to a desired receiver through the fax modem. Provided is a fax transmission device for broadcasting video signals of a television.

To this end, according to the present invention, a television broadcast signal of a predetermined broadcast channel tuned through the tuner 2 is image-processed by the image processing means 8, 10, and 12 through image intermediate frequency amplification and image detection. In a fax function television having a reproduction function and a transmission / reception function of fax information via the fax modem 24, data conversion means 14 for digitally converting a video signal of a television broadcast supplied to the image processing means 8; And a video memory means (16) for storing the digitally converted video signal by one video screen unit, and storing the video data according to television broadcasting of the video memory (16), and as fax data for the video data. Clock generation means (18) for generating a clock signal for synchronizing the conversion operation of the < RTI ID = 0.0 >, < / RTI > 19, a fax signal for converting image data according to television broadcasting from the image memory 16 into fax information data conforming to a fax standard by character code data provided from the character code memory means 19; Converting means 20 and data inverse converting means 22 for analog-converting the fax information data according to the image of the television broadcast data converted by the fax signal converting means 20 to be transmitted through the fax modem 24. ), Function setting means 26 for keying a function execution command for transmission to the other party's receiving side through data conversion of video signals of a predetermined channel selected through the tuner 2 to fax data, and the function setting. In accordance with the key input state of the means 26, data conversion of a video signal according to television broadcasting to fax information data and data transmission to a predetermined counterpart receiving side And a control means (28,30,32) for performing a control is characterized in that configured.

Description

Fax transmission device for broadcasting video signals

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fax transmission apparatus for broadcast video signals of a fax function television. More particularly, the present invention relates to a fax transmission / reception function of a television broadcaster. The present invention relates to a fax transmission device for broadcasting a video signal of a television.

As is well known, in a typical television, a predetermined channel is tuned to a video / audio process for a multichannel broadcast RF signal transmitted from a plurality of television stations in the form of over-the-air, so that the video / audio can be reproduced through a CRT and a speaker, respectively. In addition to the video / audio playback function of a television broadcast, video / audio processing from video recording media such as a video tape read out from an external video player such as a video tape recorder is performed. As a result, it is also equipped with an external signal video / audio playback function for playback through each CRT and speaker.

On the other hand, in such a television, in order to diversify functions, when a telephone number is inputted by connecting a telephone line with a public telephone network, a call operation can be made with the other party's receiver and a call received from the other party. The call-in / out function has been developed and adopted. According to the call-in / out function, when a call is received in the state of watching a television or when a call needs to be made with a predetermined receiver, the telephone is not moved to a remotely located location. A telephone number can be input by a button operation by a remote controller for remote control, or a handset operation with the other party can be made through a handset provided at a predetermined portion of the remote controller.

In addition to the above-described function of making and receiving a voice call through a public telephone network, such a television can transmit and receive text and images in a predetermined data format such as MMR format to receive and output through a fax paper. As the fax function is adopted, the fax function provided in the television includes a fax modem for performing data demodulation and demodulation over a public telephone network in accordance with the recommendation of CCITT T.30, and a scanning operation for transmitting predetermined text or image information. Scanning means, a fax output means such as a thermal transfer printer for receiving and outputting fax information received from a counterpart on a predetermined fax paper, and applying data for receiving and modulating transmission of demodulated data from the fax modem; In addition, the scanning operation and the fax output operation of the scanning means and the fax output means The fax control means that control is provided.

A television with such a fax function can transmit a predetermined text or image information through a public telephone network even while watching television without receiving a separate fax machine, and receives the received fax information through a fax paper. It is possible to confirm.

However, in a television equipped with such a fax function, the scanning means scans the paper on which the fax information received through the fax modem is processed and output on a predetermined fax paper. Since it has only a function capable of inputting through a fax modem by inputting it through the terminal, additional functions related to reproduction of a television broadcast signal are not provided, resulting in inefficiency of performing independent operations.

Accordingly, the present invention has been made in view of the above-described circumstances, and data conversion from a television having a transmission / reception function of fax information through a fax modem to a fax format having a text form for an image according to a television broadcast of a predetermined channel is performed. It is an object of the present invention to provide a fax transmission apparatus for broadcast video signal of a fax function television that can be transmitted to a desired receiver through a fax modem.

In order to achieve the above object, according to the apparatus for transmitting a broadcast video signal of a fax function television according to the present invention, a television broadcast signal of a predetermined broadcast channel tuned through a tuner is subjected to image processing means through an image intermediate frequency amplification and image detection operation. In a fax function television having a television broadcast reproducing function which is image-processed and reproduced by means of a video signal, and a transmission / reception function of fax information via a fax modem, data conversion means for digitally converting a video signal of a television broadcast supplied to the image processing means. And a video memory means for storing the digitally converted video signal by one video screen unit, synchronizing a storage operation of video data according to television broadcasting of the video memory, and a conversion operation of the video data into fax data. Clock generation means for generating a clock signal for the video signal; Conversion processing of character code memory means for storing a plurality of character code data and video data according to television broadcasting from the image memory as fax information data conforming to the fax standard by character code data provided from the character code memory means; A fax signal converting means for converting the fax information data according to the image of the television broadcast data converted by the fax signal converting means into an analog conversion process so as to be transmitted through the fax modem, and predetermined tuned through the tuner. A function setting means for keying in a function execution command for transmission to a counterpart receiving side through data conversion of a video signal of a channel to fax data, and faxing of a video signal according to television broadcasting according to a key input state of the function setting means; Data conversion to information data and predetermined counterpart Provided is a broadcast video signal fax transmission apparatus for a fax function television, comprising control means for controlling data transmission to a reception side.

According to the present invention configured as described above, a fax modem by converting data into a character form suitable for fax standards for a video signal according to television broadcasting of a predetermined broadcast channel tuned through a tuner in a television having a transmission and reception function of fax information. It can be sent to the other party through the desired.

1 is a block diagram showing a broadcast image signal fax transmission apparatus of a fax function television according to the present invention;

2 is a block diagram showing a detailed configuration of the fax signal converter shown in FIG. 1 according to a preferred embodiment of the present invention;

3 is a flowchart illustrating operation in accordance with a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

2: tuner, 4: video IF section,

6: image detector, 8: image amplifier,

10: color signal processing unit, 12: video output unit,

14: ADC, 16: Video Memory,

18: clock generator, 19: character code memory,

20: fax signal converter, 22: DAC,

24: fax modem, 26: function setting section,

28: main control unit, 30: program memory,

32: fax control unit, 34: line memory,

36: MMR data conversion unit, 38: FAX format conversion unit,

40: Fax window buffer.

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 broadcast video signal fax transmission apparatus of a fax function television according to the present invention. In the apparatus of the present invention, reference numeral 2 denotes a channel for selecting a predetermined channel from the main controller 28, which will be described later. A tuner for receiving channel channeling data to tune the channel and converting the channel into an intermediate frequency signal is shown. 4 represents an image IF unit for intermediate frequency amplifying the television broadcast signal in the form of the tuned intermediate frequency 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 multi-stage signal amplification for the image detected video signal. A video amplification section for performing brightness adjustment and contrast adjustment for a brightness signal, and 10 denotes a color signal processing section for detecting a burst signal from the signal amplified video signal and performing color demodulation and color demodulation according to a color subcarrier signal restoration process; 12 denotes an image output unit which combines the color demodulated color signal from the color signal processing unit 10 with the luminance signal from the image amplifying unit 8 and outputs it as an R / G / B color signal.

Reference numeral 14 denotes an analog-to-digital converter (ADC) for digitally converting the luminance signal of the video signal according to the television broadcast from the video amplifier 8, and 16 denotes the main controller 28, which will be described later. The recording enable signal WE from the device is enabled by the recording enable signal WE, and is synchronized with the clock signal CK provided from the clock generator 18, which describes luminance data according to television broadcasting from the ADC 14, which will be described later. According to the recording speed, the data is stored in units of one video screen (one frame), and the read operation is enabled by the read enable signal RE, and the read operation is performed at a read speed synchronized with the clock signal CK. 18 denotes an image memory, and 18 denotes a function for synchronizing the digital conversion operation of the ADC 14 with the recording and reading operation of the luminance data of the image memory 16, and the data conversion processing of the fax signal conversion unit 20 described later. Clock A clock generator for generating a call CK is shown.

Reference numeral 19 denotes a character code memory in which a plurality of character code data corresponding to the fax format is stored, and 20 denotes the image memory 16 by the fax data conversion control from the fax control unit 32 described later. A facsimile signal converting section which converts luminance data corresponding to television broadcasting to be read out into character data that can be transmitted as fax information by the character code data read out from the character code memory 19.

Here, the fax signal converter 20 receives the luminance data according to the television broadcast from the image memory 16 and stores the scanned data per scan line according to the recording / reading enable operation. Character code from the character code memory 19 for encoding processing to the line memory 34 for reading out and to the fax data standard according to the CCITT T.4 and T.6 recommendations provided from the fax control unit 32 described later. MMR data conversion unit 36 for receiving MMR control signals according to data and performing MMR encoding on luminance data from the line memory 34, and receiving and outputting to a predetermined fax paper from a fax control unit 32 described later. A fax format conversion unit 38 for receiving a fax format control signal for determining a format so as to convert the MMR-encoded image data into a fax output format, and the data converted image It is configured to include a fax window buffer 40 for buffering the data output.

Reference numeral 22 denotes a digital-analog converter (DAC) for analog-converting and outputting luminance data of television broadcasting converted from the fax signal converter 20 as fax information, and 24 denotes a fax controller 32, which will be described later. A fax modem which modulates and transmits a luminance signal of a television broadcast converted into fax information from the DAC 22 through a communication connection to a fax number of a receiver to be sent from the other party.

Also, reference numeral 26 is a matrix button unit provided in a predetermined portion of the remote control remote control unit or the control panel of the main body, and converts the luminance signal according to the television broadcast tuned through the tuner 2 as fax information to be transmitted to a predetermined counterpart receiving side. A function setting section for keying a function execution command to be displayed is shown.

Reference numeral 28 denotes the image, together with the enable control of the ADC 14 and the clock generator 18 according to the setting of the fax transmission function of the television broadcast screen by the key input of the function setting unit 26. A recording / reading enable signal (WE / RE) and a clear signal (CLR) are generated for storing and reading control of the luminance data of the memory 16, and the image is controlled through a control communication with a fax controller 32 to be described later. A control operation is performed such that the luminance signal according to the television broadcast from the memory 16 is converted into fax information according to the character code data read out from the character code memory 19 so that data transmission to a predetermined fax number is performed. Indicates the main control unit.

In addition, reference numeral 30 also enables MMR encoding of data according to the fax data standard according to the recommendations of CCITT T.4 and T.6, and a control program for determining the reception output format for MMR encoded data. 32 denotes a stored program memory, wherein the fax signal converter 20 generates an MMR control signal for enabling MMR encoding of luminance data of a television broadcast according to a control program from the program memory 30. A fax control unit for generating a fax format control signal for converting fax information into a reception output format and controlling communication connection by dialing a predetermined fax number to the fax modem 24 is shown.

Next, the operation of the present invention made as described above will be described in detail with reference to the flowchart of FIG. 3.

First, when a predetermined channel is tuned through the tuner 2 in step 41, the image IF unit 4 performs the intermediate frequency amplification processing of the television broadcast signal of the corresponding channel, and the image detector 6 performs the intermediate frequency amplification. While the video signal is detected from the television broadcast signal, the projection amplifier 8 amplifies the video signal in multiple stages and performs brightness adjustment and contrast adjustment on the brightness signal, and the color signal processor 10 performs the signal. By performing color demodulation processing on the amplified video signal, the video is reproduced on the CRT screen via the video output unit 12.

In this state, the flow advances to step 42, and the main controller 28 determines whether or not the fax transmission function for the currently reproduced video screen is set by the keystroke of the function setting unit 26.

As a result of the determination in step 42, if it is determined that the fax transmission function of the video screen according to the key operation of the function setting unit 26 is set, the control proceeds to step 43 and the ADC 14 and the clock generator 18 Enable control of the luminance signal according to the television broadcast from the image amplification unit 8, and digitally convert the luminance data according to the write enable signal WE to the image memory 16. Is stored in units of 1 video screen.

Subsequently, the flow advances to step 44 to determine whether or not a function operation for storing luminance data of the video screen stored in the video memory 16 as fax information to the other party is performed by the key operation of the function setting section 26. To judge.

As a result of the determination in step 43, if it is determined that the function operation on the fax information of the luminance data stored in the image memory 16 is not performed, then control proceeds to step 45, and the function setting unit 26 causes the image memory to operate. It is determined whether or not a key input relating to the invalidation of transmission for the luminance data stored in (16) is performed.

As a result of the determination in step 45, if it is determined that the function setting section 26 is performing key operation for invalid fax transmission of luminance data according to the television broadcast, then control proceeds to step 46 to the image memory 16. The stored luminance data is erased by applying the clear signal CLR.

However, when it is determined in step 45 that the key input for the invalid transmission of the luminance data according to the television broadcasting stored in the video memory 16 is not performed, the system enters the standby state.

On the other hand, if it is determined in step 44 that the function setting unit 16 is performing a key operation for executing the fax transmission function of the luminance data according to the television broadcast stored in the image memory 16, the control returns to step 48. The character code data corresponding to the luminance data is read from the fax character code memory 19 through control communication with the fax control unit 32 so that data conversion is performed as fax information by the fax signal conversion unit 20. do.

On the other hand, the line memory 34 of the fax signal converter 20 stores the luminance data read out from the image memory 16 by one scan line, and outputs the read data, and the MMR data converter 36 sends a fax. Under the control of the control unit 32, MMR encoding of the luminance data is performed by the character code data from the character code memory 19 to convert the data into a fax data standard, and the fax format converter 38 converts the fax into the fax data standard. As the control of the control unit 32 converts the format into a format capable of receiving and outputting to a predetermined fax paper, the luminance data through the fax window buffer 40 is analog-converted by the DAC 22.

Then, in step 49, the fax control unit 32 makes a communication connection to a predetermined fax number in the fax modem 24 by control communication with the main control unit 28, so that the luminance data according to the television broadcast is transmitted to the other party. It can be transmitted to the receiver.

According to the present invention made as described above, by converting the image of the television broadcast to the fax information data having a text form in the television with a fax function to be transmitted through the fax modem, the other party to the desired television video screen This has the advantage that the fax transmission to the side becomes possible.

Claims (3)

A television broadcast reproduction function in which a television broadcast signal of a predetermined broadcast channel tuned through the tuner 2 is image-processed and reproduced by the image processing means 8, 10, and 12 through an image intermediate frequency amplification and image detection operation; In a fax function television having a transmission / reception function of fax information via a modem (24), Data conversion means (14) for digitally converting a video signal of a television broadcast supplied to said image processing means (8); Image memory means (16) for storing the digitally converted image signal in units of one image screen; Clock generating means (18) for generating a clock signal for synchronizing the storing operation of the image data according to the television broadcasting of the image memory (16) and the operation of converting the image data into fax data; Character code memory means 19 for storing a plurality of character code data corresponding to the video signal of the television broadcast; Fax signal conversion means (20) for converting image data corresponding to television broadcasting from the image memory (16) into fax information data conforming to the fax standard by the character code data provided from the character code memory means (19). , Data inverse conversion means (22) for analog-converting the fax information data according to the image of the television broadcast data converted by the fax signal conversion means (20) to enable transmission through the fax modem (24); Function setting means (26) for keying in a function execution command for transmitting to a counterpart receiving side through data conversion of video signals of a predetermined channel selected through the tuner (2) into fax data; Control means (28, 30, 32) for controlling data conversion of a video signal according to a television broadcast into fax information data and data transmission to a predetermined counterpart receiving side according to the key input state of the function setting means 26; Broadcast video signal fax transmission apparatus of a fax function television comprising a. 2. The apparatus as claimed in claim 1, wherein said fax signal converting means (20) comprises: a line memory (34) for storing image data according to television broadcasting from said image memory means (16) per scanning line, and said control means (30). An MMR data conversion unit 36 which receives character code data from the character code memory means 19 as an MMR control signal under the control of 32 and performs MMR encoding on the image data from the line memory 34; Fax format conversion unit 38 for receiving the fax format control signal from the control means (30, 32) and converting the MMR-encoded image data into a fax output format, and buffering and outputting the data converted image data. Broadcast video signal fax transmission apparatus for a fax function television, characterized in that comprises a fax window buffer (40). 3. The video memory means (16) according to claim 1 or 2, wherein the video memory means (16) stores only a luminance signal among video signals according to television broadcasting, and the MMR data converting portion (36) of the fax signal converting means (20) is luminance. An apparatus for transmitting broadcast video signals of a fax machine, characterized in that MMR encoding is performed on data.