KR19990001236A - Fax function Multi-screen playback processing device for television - Google Patents

Abstract

The present invention performs data conversion and image processing of predetermined fax information received through a fax modem to a television image standard on a television equipped with a fax function and a multi-screen playback function to a single screen by executing a multi-screen playback mode. A multi-screen reproduction processing apparatus for fax information of a fax function television capable of simultaneously reproducing the corresponding fax information through the other side screen in a television broadcasting screen reproduction state of the present invention.

To this end, the present invention is to convert the fax character data of the MMR decoded fax information through the fax signal conversion unit 20 as a composite video signal of the television image standard to reproduce the image on a predetermined screen in the main / sub-screen. Fax image data for fax character data of the fax information received from the fax signal conversion unit 20 via the fax output switching means 22 and the fax output switching means 22 for switching operation to form a signal path. Data conversion processing means (24) for converting and processing data into a data format conforming to a standard; image conversion processing means for image-processing image data of a fax image according to the fax information converted through the data conversion processing means (24) for screen reproduction. (26), the FAX image data processed by the image conversion processing means 26 is entirely displayed on a predetermined screen among the main and sub-screens. The signal compression processing means 28 which compresses the signal so that the signal can be generated, the one-side screen reproduction of the television broadcast signal tuned from a predetermined tuner among the plurality of tuners 4 and 5 at the time of setting the fax information screen reproduction function, and the signal Multi-screen mode switching means 10 for performing a mode switching operation for reproducing the fax video signal of the fax information through the compression processing means 28, the image of the fax information received by the fax modem 18 Function setting means (27) for inputting an execution command for reproducing a television broadcast signal through one screen and reproduction of a fax video signal through another screen in a multi-screen playback mode by converting an image into a signal. And switching control of the fax output switching means 22 according to the image conversion of the fax information by the function setting means 27 and the execution of the multi-screen playback function. Control of the data format conversion processing of the data conversion processing means 24 and control of the image conversion processing of the image conversion processing means 26, and the mode switching of the multi-screen mode switching means 10. Control means (28,29) for controlling the simultaneous playback of television broadcasting and fax information through the screen is characterized in that it is configured.

Description

Fax function Multi-screen playback processing device for television

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-screen reproduction processing apparatus for fax information of a fax function television, and more particularly, to transmit and receive facsimile information, which is composed of text and image information, with a counterpart through a public telephone network (PSTN). In addition to the facsimile function, the television screen can be played on one screen by the multi-screen playback mode, and the screen on the other screen can be played on a television equipped with the multi-screen playback function. The present invention relates to a multi-screen reproduction processing apparatus for fax information of a fax function television that allows screen information to be reproduced through a fax modem.

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, since fax information from the other party received through the fax modem can be received and output using only a predetermined size of fax paper, there is a problem that waste of unneeded fax paper is caused. have.

Also, in such a conventional television with a fax function, an image by converting the fax information received from the other party into a video format by a compatible operation with the reception output function of the fax information by using an image reproduction function for television broadcasting. Since the necessity of reproducing is increasing, there is a disadvantage that it is impossible to watch a desired television broadcast program in the meantime even if the reproduction of the corresponding fax information is possible.

Accordingly, the present invention has been made in view of the above-described circumstances, and data conversion and image processing of predetermined fax information received through a fax modem to a television image standard on a television equipped with a fax function and a multi-screen playback function are performed. It is an object of the present invention to provide a facsimile information multi-screen playback processing apparatus for a television with a fax function that enables a user to simultaneously play back the corresponding fax information through the other screen in a television broadcast screen playback state on one screen by executing the multi-screen playback mode. have.

In order to achieve the above object, according to the fax information multi-screen playback processing apparatus of a fax function television according to the present invention, broadcast signals corresponding to a plurality of broadcast channels tuned by a plurality of tuners are respectively provided to the first and second image processing units. In the television with the multi-screen playback function to be reproduced as a main / sub-screen by the image processing, and the fax reception function for MMR decoding the fax information received by the fax modem through the fax signal conversion unit to receive and output through the fax paper And converting the fax character data of the MMR decoded fax information into the composite video signal of the television image standard through the fax signal converting unit so as to form a signal path for reproducing the image on a predetermined screen in the main / sub picture. A fax output switching means which operates and a fax output converting means Data conversion processing means for converting the fax character data of the received fax information into a data format conforming to the television image standard, and image processing for screen reproduction of the fax image data according to the fax information converted through the data conversion processing means A signal compression processing means for compressing a signal such that the image conversion processing means for converting the fax image data processed by the image conversion processing means can be reproduced as a whole on a predetermined screen in a main / sub picture, and a fax information screen reproducing function; And a mode switching operation for reproducing the fax video signal of the fax information through the signal compression processing means on the other screen, in addition to reproducing one side of the television broadcast signal tuned from a predetermined tuner among the plurality of tuners at the time of setting. Multi-screen mode switching means, fax information received by the fax modem A function setting means for keying an execution command for reproducing a television broadcast signal through one screen and a reproduction of a fax video signal through another screen in a multi-screen playback mode by converting an image into one video signal; Switching the fax output switching means in accordance with the image conversion and the multi-screen playback function of the fax information by the function setting means, and controlling the data format conversion processing of the data conversion processing means and the image conversion processing. Control means for controlling the image conversion processing of the means, and controlling the multiple screen mode switching means to control the simultaneous playback of television broadcasting and fax information through the main / sub picture. Provides a multi-screen playback processing device for fax information.

According to the present invention configured as described above, a television having a predetermined channel on a television having a multi-screen playback function for main / sub picture playback of a plurality of channels and a fax reception function capable of outputting a fax paper of fax information received through a fax modem. When the fax information received through the fax modem is reproduced on the CRT screen in the state of reproducing the television broadcast, the television broadcast according to a predetermined channel, which is reproduced according to the execution of the multi-screen playback mode, is displayed on one side screen (for example, the main screen). In this state, the fax image signal generated through the data conversion and image conversion processing of the corresponding fax information to the television image standard can be simultaneously reproduced on the other side screen (for example, the sub picture).

1 is a block diagram showing a fax information multi-screen playback processing 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 block diagram showing a detailed configuration of the data conversion processing unit shown in FIG. 1 according to a preferred embodiment of the present invention;

4 is a block diagram showing a detailed configuration of the image conversion processing unit shown in FIG. 1 according to a preferred embodiment of the present invention;

5 is a view showing a detailed configuration of the signal compression processing unit shown in FIG. 1 according to a preferred embodiment of the present invention;

FIG. 6 is a diagram illustrating an example in which fax information converted into a composite video signal is reproduced simultaneously with a video screen of a television broadcast according to a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

2: receiving antenna, 4, 5: tuner,

6,7: Image IF unit, 8, 9: Image detector unit,

10: multi-screen mode switching unit, 12: the first image processing unit,

14: second image processing unit, 16: image multiplexing unit,

18: fax modem, 20: fax signal converter,

22: fax output switching unit, 24: data conversion processing unit,

26: image conversion processing unit, 28: signal compression processing unit,

30: function setting section, 32: main control section,

34: fax control unit, 36: data receiving unit,

37: MMR memory, 38: character data processing unit,

39: MMR control unit, 40: MMR control memory,

41: output buffer, 42: fax character receiving unit,

44: data sampling section, 46: fax data memory,

48: clock generator, 50: output buffer,

52: data conversion controller, 64: input buffer,

66: data level comparison unit, 68: luminance level generation unit,

70, 84: level switching unit, 72, 74, 76: red / green / blue level generating unit,

78, 80, 82: chromatic synthesis filter, 86, 88: output buffer,

92,94: line memory, 96,98: clock generator,

100: signal compression control unit, 102: data summing unit,

104: vertical synchronous side, 106: horizontal synchronous side,

108: Oagate, 110: multiplexer,

112: DAC.

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 multi-screen reproduction processing apparatus for fax information of a fax function television according to the present invention. In the apparatus of the present invention, reference numerals 4 and 5 denote multi-screen reproduction from the main control unit 32 described later. 6 shows a tuner which receives the channel tuning data for the tuning of a plurality of broadcasting channels to be tuned and converts the RF signal of the corresponding broadcasting channel into an intermediate frequency signal among the plurality of channels induced in the reception antenna 2, 6, 7 denotes an image IF unit for intermediate frequency amplifying a television broadcast signal having an intermediate frequency according to the selected multiple channels, and 8 and 9 are detections for separating a composite video signal from the intermediate frequency amplified television broadcast signal, respectively. An image detector for performing an operation is shown.

Reference numeral 10 denotes a main / sub picture reproduction for a multi-channel television broadcast signal tuned from the first and second tuners 4 and 5, respectively, in accordance with the mode switching control by the main controller 32, which will be described later. Or received from the fax modem 18 at the same time as reproduction on one side screen (e.g., main screen) of a television broadcast signal of a predetermined channel tuned through a predetermined tuner among the first and second tuners 4 and 5; A multi-screen mode switching unit for switching switching for reproducing a screen of a fax video signal according to the fax information to be reproduced on another screen (for example, a sub screen).

In addition, reference numeral 12 denotes a multi-stage signal amplification processing of a composite video signal of a television broadcast or a fax video signal according to fax information to be reproduced as a main screen through the multi-screen mode switching unit 10, and luminance adjustment for a luminance signal. And a contrast adjustment, and a color output processing to output an R / G / B video signal obtained by combining the RY / GY / BY signal and the luminance signal, and 14 denotes the multi-screen mode switching unit 10. A video signal processing is performed in synchronization with the vertical / horizontal synchronization signals (VS, HS) from the first image processing unit (12). 16 denotes a second image processing unit, and 16 denotes an R / G / B color signal of a main / sub picture reproduction target from the first and second image processing units 12 and 14, respectively, in the main / sub picture area of the CRT. Signal for each playback It shows parts of a video multiplexer for performing neutralization.

Reference 18 is connected to a public telephone network (PSTN) via a telephone line, and modulates data of the fax information to be transmitted by a modulation / demodulation method such as VSB modulation and demodulation according to the recommendation of CCITT T.30. In addition, it represents a fax modem for data demodulation processing received fax information received from the other party, and 20 indicates that the fax information data received and demodulated through the fax modem 18 in the recommendations of CCITT T.4, T.6. According to the MMR method according to the present invention, there is shown a fax signal converter which converts and converts to fax character data that can be output in the form of characters or images.

Here, the fax signal converting unit 20 receives a data demodulation unit 36 for receiving and buffering the fax information data received through the fax modem 18 and data demodulated, as shown in FIG. 2, and the received fax. The MMR memory 37, which consists of DRAM, for storing information data for MMR data processing, and the fax information data from the MMR memory 37 is stored in the MMR control memory 40 under the function control of the fax control section 34 described later. The MMR memory 37 under the data coding control of the MMR control unit 39 and the MMR control unit 39, which perform MMR data coding based on the MMR control program and perform a control operation for restoring processing as character data (or image data). A character data processing unit 38 for performing MMR coding on the fax information data into the character data and an output server for buffering and outputting the fax character data generated as a result of the MMR data coding process. It is configured to include a 41.

Further, reference numeral 22 denotes an image conversion process of the fax character data from the fax signal converter 20 according to the television video standard by switching control of the main controller 32, which will be described later. Represents a fax output switching unit which switches to form a signal path for reproducing a screen on a predetermined screen in a screen or selectively receiving output through a predetermined fax paper.

Reference numeral 24 denotes a data conversion processing unit for converting the fax character data from the fax signal conversion unit 20 through the fax output switching unit 22 into a data format conforming to the television video standard.

Here, the data conversion processing unit 24 is a fax character receiving unit 42 for receiving the fax character data from the fax signal conversion unit 20 as shown in FIG. 3, and converts the fax character data into the television image standard. The data sampling section 44 for sampling at a sampling rate synchronized with the first clock signal CK1 from the clock generation section 48 described later by the number of quantization bits, and the recording from the data conversion control section 52 described later. The recording operation is enabled by the enable control signal WE to perform a recording operation at a recording speed synchronized with the second clock signal CK2 from the clock generator 48 to store the sampled fax character data. The read operation is enabled by the read enable signal RE, and then the read operation of the fax character data is performed at a read speed synchronized with the third clock signal CK3. Read from the fax data memory 46 and the fax data memory 46 for converting into fax image data of a 525-line scan format when the revision video standard is NTSC system having a video scanning line of 525 lines. And an output buffer 50 which buffers and outputs the fax image data.

In addition, the data conversion processing section 24 as shown in Fig. 3 is the first and second for synchronizing the sampling operation of the data sampling unit 44 and the data recording and reading operation of the fax data memory 50. And a clock generator 48 for generating third clock signals CK1, CK2, and CK3, and a main controller 32 to be described later to convert the data format of the fax character data into the fax data memory 46. A control signal for control, that is, a write enable control signal WE, a read enable control signal RE, and a clear control signal CLR are generated. An enable signal for enabling the operation of the clock generator 48 Data conversion control unit 52 for generating an ENA,

Reference numeral 26 denotes an image conversion processing unit which performs image processing to enable the screen reproduction through the CRT screen on the fax image data whose data format is converted by the data conversion processing unit 24.

Here, the image conversion processing unit 26 is an input buffer 64 for receiving and buffering the fax image data as shown in Figure 4, and the data level for the fax image data received through the input buffer 64 Is compared with a predetermined reference level, and the luminance signal corresponding to the television video standard under the enable control of the data level comparator 66 and the image conversion controller 92 described later to generate a positive / negative switching signal corresponding to the level. Whether or not a signal is passed to the luminance data from the luminance level generator 68 according to a switching signal from the luminance level generator 68 and the data level comparator 66 for generating the luminance data for generation of the " It is configured to include a brightness level switching unit 70 for switching.

In addition, the image conversion processing unit 26 shown in FIG. 4 has a red / green / blue level for generating red, green, and blue signals corresponding to the television video standard under the enable control of the image conversion control unit 92 described later. The red, green, and blue level generators 72, 74, and 76 that generate data, respectively, and the red, green, and blue level generators 72, respectively, in accordance with the chromaticity coefficients generated by the image conversion controller 92, which will be described later. A plurality of chromaticity synthesis filters 78, 80, and 82 for varying and outputting chromaticity of red, green, and blue level data generated from the data of the data level comparator 66 and the switching signal from the data level comparator 66; Buffering luminance data passing through the chromaticity level switching unit 84 and the luminance level switching unit 70 for switching the signal passage for chromaticity data synthesized by the plurality of chromaticity synthesis filters 78, 80, and 82. Output buffer 86, the chromaticity level A second output buffer 88 for buffering and outputting chromaticity data passing through the switching unit 84 and the image processing control by the main controller 32 to be described later and the luminance level generating unit 68 and red / green color. / First and second and third for enabling control for starting operation of the blue level generators 72, 74, and 76 and adjusting chromaticity filtering for the plurality of chromaticity synthesis filters 78, 80, and 82; And an image conversion controller 90 for generating the coefficients.

Reference numeral 28 performs signal compression to reproduce the entire display contents of the fax luminance data and the fax chromaticity data from the image conversion processing section 28 on a predetermined side screen such as a main screen or a sub-screen, and the signal compression thereof. And a signal compression processing unit for synthesizing the respective fax luminance data and the fax chromaticity data with the horizontal / vertical synchronous signal synchronized with the signal compression period.

As shown in FIG. 5, the signal compression processing unit 28 enables the recording operation by the recording enable signal WE to generate fax luminance data and fax chromaticity data generated from the image conversion processing unit 26. Record at the recording speed synchronized with the recording clock signal WCK, and store each unit in one scan line, and read the fax luminance data and the fax chromaticity data stored by the read operation enabled by the read enable signal RE. The FAX luminance data and the FAX chromaticity are stored in the first and second line memories 92 and 94 for compressing data by reading data at a read speed synchronous with a clock signal, and the first and second line memories 92 and 94. Fax luminance data and fax chromaticity data stored in the first clock generator 96 and the first and second line memories 92 and 94 which generate a recording clock signal WCK for synchronizing recording and storage of data are compressed. Treated poison Compression of data into the second clock generator 98 and the first and second line memories 92 and 94 that generate the read clock signal RCK having a short clock period relative to the write clock signal WCK. In addition to generating recording and read control signals WE and RE for processing, the fax luminance data and the fax chromaticity data output from the first and second line memories 92 and 94 are combined with the vertical / horizontal synchronization signals. It is configured to include a signal compression control unit 100 to control.

In addition, the signal compression processing unit 28 shown in FIG. 5 is a data summing unit for data summing processing of the fax luminance data and the fax chromaticity data which are compressed and read by the signals from the first and second line memories 92 and 94, respectively. And a read clock signal (RCK) generated by the second clock generator (98) by receiving the vertical synchronization signal (VS) corresponding to the television broadcast signal from the first image processor (12). Read from the second clock generator 98 by receiving the horizontal synchronization signal HS corresponding to the television synchronization signal from the vertical synchronization unit 104 and the first image processing unit 12 varying the synchronization signal period. An oragate which receives the horizontal / vertical synchronization signal from the vertical / horizontal synchronization unit 104 and 106, and logically processes and outputs the horizontal synchronization unit 106 that varies the synchronization signal period based on the clock signal RCK; 108), selective control of the signal compression control unit 100 And selectively combines the synthesized data of the fax luminance data and the fax chromaticity data processed by the data summing unit 102 and the vertical / horizontal synchronization signal of which the synchronization signal period from the oragate 108 is variable. And a multiplexer 110 for outputting the signal, and a signal converter 112 for analog converting the fax image data synthesized with the horizontal / vertical synchronization signal and the fax synthesis data passing through the multiplexer 110.

Reference numeral 30 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 executes the main screen or sub-screen playback under the multi-screen playback mode for the fax information received through the fax modem 18. And a function setting unit for performing a selective key operation for displaying a fax image signal according to the fax information reproduced on the screen with only a constant brightness or displaying the screen with a predetermined chromaticity.

In addition, reference numeral 28 allows MMR decoding of received fax information by control communication with the fax control unit 29 when predetermined fax information is received through the fax modem 18, and the function setting. A switching control for the fax output switching unit 22 and the data conversion processing unit 24 and the image conversion processing unit 26 for causing the fax information to be converted into data according to the television image standard according to the key operation of the unit 27; Control of data conversion processing and signal compression processing by the signal compression processing section 28, and mode switching control of the multi-screen mode switching section 10 enables the main or sub picture reproduction under the execution of the multi-screen playback mode. In addition, in accordance with an optional key operation of the function setting unit 27, the image conversion processing unit 26 converts the fax image data into only the luminance signal or the predetermined color of the fax image data. A main control section for controlling the combined conversion state of the signal and the luminance signal is shown.

Reference numeral 29 denotes a fax control unit which performs MMR decoding processing on the received fax information and fax output processing control on a reception output function by a predetermined fax paper by control communication with the main control unit 28.

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

First, in accordance with the execution of the multi-screen playback mode, the television broadcast signals of the multiple broadcast channels tuned through the first and second tuners 4 and 5 are respectively transmitted by the first and second video IF units 6 and 7, respectively. The intermediate frequency amplifier is amplified and the composite image signal is separated through the image detection operation through the first and second image detectors 8 and 9, and the first and second image processor 12 are transmitted through the multi-screen mode switcher 10. 14, the image is processed as a reproduction target of the main / sub picture, and then reproduced on the CRT screen by the multiplexing process for designating the main / sub picture position by the image multiplexing unit 16.

In this state, while the predetermined fax information is received through the fax modem 18, the main control unit 32 receives the received fax information from the fax signal conversion unit 20 through control communication with the fax control unit 34. MMR decoding to convert the fax into character data.

At this time, when the function setting unit 30 performs an operation command for converting the fax information into a television video standard and reproducing the screen, the main controller 32 switches the fax output switching unit 22. Control to supply the fax character data MMR decoded by the fax signal conversion unit 20 to the data conversion processing unit 24, and the data conversion control unit 52 of the data conversion processing unit 24 is adapted to the data format conversion. The control operation is started.

Meanwhile, the data sampling unit 44 of the data conversion processing unit 24 synchronizes the fax character data received through the fax character receiving unit 42 with the first clock signal CK1 generated from the clock generator 50. The sampling rate is sampled to have the number of bits in accordance with the television video standard, and the fax data memory 46 is recorded and read by the recording and read enable control signals WE and RE of the data conversion control unit 52, respectively. The operation is enabled to store the sampled fax character data at a recording speed synchronized with the second clock signal CK2 from the clock generator 50, and to the third clock signal CK3. The fax text from the fax data memory 46 is output from the fax data memory 46 by reading the fax text data at a synchronous reading speed and converting the data to have an image scanning line according to the television video standard. And outputs to buffer data.

Accordingly, the data level comparison section 66 of the image conversion processing section 26 controls the data level based on a predetermined reference level for fax image data received from the data conversion processing section 24 received through the input buffer 64. When the comparison is performed to generate a positive / negative switching signal, the image conversion control unit 90 is controlled by the main control unit 32 according to an optional function operation of the function setting unit 30 to display an image of only the luminance signal. Processing by conversion or image conversion processing control by combining luminance signal and chromaticity signal is performed.

That is, the image conversion control unit 90 of the image conversion processing unit 26 performs a key operation in which the function setting unit 30 selects an image conversion processing function by combining luminance signals and chromaticity signals with respect to the fax image data. In this case, the luminance level generating unit 68 is controlled to generate luminance data of a predetermined level and is output via the luminance level switching unit 70 switched by the switching signal from the data level comparing unit 66. In addition, the red, green, and blue level data are generated from the red, green, and blue level generators 72, 74, and 76, and the first and second colors are supplied to the plurality of chromaticity synthesis filters 78, 80, and 82, respectively. And a chromaticity level switching unit 84 that is switched by a switching signal from the data level comparator 66 as the third coefficient is applied so that the red, green, and blue level data are respectively synthesized with a predetermined chromaticity. To be output via .

Accordingly, the first and second output buffers 86 and 88 of the image conversion processor 26 buffer luminance data and chromaticity data according to the fax information passed through the luminance / chromatic level switching units 70 and 84. To the signal compression processor 28.

On the other hand, in the first and second line memories 92 and 94 of the signal contact processing section 28, the write enable signal WE from the signal compression control section 100, which is executed by the main control section 32, is controlled. The luminance data and chromaticity data according to the fax information from the image conversion processing section 26 are stored in unit of one scan line at a recording speed synchronized with the recording clock signal WCK from the first clock generator 96. Then, when the read enable signal RE from the signal compression control unit 100 is supplied, it is stored in the storage space by the read speed synchronized with the read clock signal RCK from the second clock generator 98. As the luminance data and the chromaticity data are read out by signal compression processing, the data summing unit 102 performs the data compression processing on the first and second line memories 92.94 to read the luminance data and the chromaticity data. Summing up It is force.

At this time, the read / clock signal RCK generated from the second clock generator 98 under the control of the signal compression controller 100 in the vertical / horizontal synchronizer 104 and 106 of the signal compression processor 28. The synchronization signal period so that the vertical / horizontal synchronization signals VS and HS corresponding to the television broadcast signal from the first image processing unit 12 correspond to the signal compression period of luminance data and chromaticity data according to the fax information Is outputted by varying the output signal, and the OR gate 108 outputs a logical sum processing of the vertical / horizontal synchronization signal in which the signal is changed, while the multiplexer 110 adds the data under the selective control of the signal compression control unit 100. The sum data of the signal-compressed luminance data and chromaticity data and the vertical / horizontal synchronization signal from the unit 102 are selectively passed through, and the DAC 112 is synthesized through the multiplexer 110. Fax image data according to the scan information is converted to analog output.

Therefore, the multi-screen mode switching unit 10 outputs only the composite video signal corresponding to one broadcast channel tuned by a predetermined tuner among the first and second tuners 4 and 6, for example, as the playback target of the main screen. In addition, the fax image signal through the signal compression processing unit 28 is outputted by mode switching, for example, as a reproduction object of the sub-screen, so that the image signal processing is performed through the first and second image processing units 12 and 14, respectively. The R / G / B color signal according to the composite video signal and the fax video signal of a predetermined broadcast channel is displayed as shown in FIG. 6 through the operation of designating the main / sub picture position by the image multiplexer 16. The main screen 114 to be formed and the sub-screen 116 on which the fax information screen is formed can be reproduced at the same time.

According to the present invention made as described above, the image of the television broadcast on one screen through the conversion of the image data of the television image standard for the fax information received through the fax modem in a television with a multi-screen playback function and a fax reception function By allowing the screen to be selectively reproduced on a predetermined screen in this reproduced multi-screen, unnecessary waste of the fax paper can be prevented, the fax contents can be easily grasped, and the fax contents can be viewed even in the viewing state of television broadcasting. You will have the advantage that you can check.

Claims (6)

Multi-screen playback in which broadcast signals corresponding to a plurality of broadcast channels tuned by the plurality of tuners 4 and 5 are respectively processed by the first and second image processing units 12 and 14 to be reproduced as main / sub picture. In a television having a function and a fax reception function of receiving MMR decoding of fax information received by the fax modem 18 through the fax signal conversion unit 20 and outputting the received fax data through a fax paper, Forming a signal path for reproducing an image on a predetermined screen in the main / sub picture by data conversion processing of the fax character data of the MMR decoded fax information through the fax signal conversion unit 20 as a composite video signal of a television image standard. For switching the fax output switching means 22, Data conversion processing means (24) for converting the fax character data of the fax information received from the fax signal conversion unit (20) into the data format conforming to the television video standard via the fax output switching means (22); Image conversion processing means (26) for image-processing the fax image data according to the fax information data converted by the data conversion processing means (24) so as to reproduce the screen; Signal compression processing means (28) for performing signal compression so that the fax image data processed by the image conversion processing means (26) can be reproduced as a whole on a predetermined screen in a main / sub picture; In setting the fax information screen reproduction function, in addition to reproducing one side of the television broadcast signal tuned from a predetermined tuner among the plurality of tuners 4 and 5, the fax image signal of the fax information through the signal compression processing means 28 is provided. Multi-screen mode switching means for performing a mode switching operation for reproducing the video on the other side of the screen; By converting the image information of the fax information received by the fax modem 18 into the video signal, the reproduction of the fax video signal through the other screen and the reproduction of the television broadcast signal through the one screen under the multi-screen playback mode. Function setting means (27) for keying an execution command to be performed; Switching control of the fax output switching means 22 in accordance with the image conversion and the multi-screen playback function of the fax information by the function setting means 27, and the data format conversion processing of the data conversion processing means 24. Control of the control unit and the image conversion processing of the image conversion processing means 26, and the mode switching of the multi-screen mode switching means 10 to simultaneously reproduce television broadcast and fax information through the main / sub picture. And a control means (28,29) for controlling such that it is possible. The data conversion processing means (24) according to claim 1, wherein said data conversion processing means (24) includes a fax character receiver (42) for receiving fax character data from said fax signal converter (20), and converts said fax character data into a predetermined number of quantized bits. Accordingly, the write / read operation is performed by the data sampling unit 44 which performs sampling processing at the sampling rate synchronous with the first clock signal CK1 and the control signals WE, RE, and CLR from the data conversion control unit 52. A fax data memory 46 for converting fax character data into an image scanning format by performing recording and reading operations at a recording and reading speed synchronized with the second and third clock signals CK2 and CK3, respectively, the image scanning format Clock generation unit 48 for generating first, second and third clock signals CK1, CK2 and CK3 for synchronizing the data format conversion operation of the conversion unit, and fax image data from the fax data memory 46. Output buffer 50 for buffering and outputting And a data conversion control unit 52 for generating control signals WE, RE, CLR, and ENA for data format conversion control of the fax character data to the existing fax data memory 46 and the clock generation unit 48. A multi-screen reproduction processing apparatus for a fax information of a fax function television, comprising: The data level comparator 66 of claim 1, wherein the image conversion processor 26 compares data levels of fax image data received through the input buffer 64 and generates a switching signal corresponding to the levels. And a luminance level generator 68 for generating luminance data for generating a luminance signal corresponding to the television video standard, and from the luminance level generator 68 according to a switching signal from the data level comparator 66. A luminance level switching unit 70 for switching a signal passage for luminance data, a chromaticity level generating unit for generating chromaticity data for generating a chromaticity signal corresponding to a television video standard, and the data level comparing unit 66 Chromaticity level switching unit 84, the luminance level switching unit 70 and the chromaticity level switch for switching the signal passage for the chromaticity data from the chromaticity level generating unit 68 in accordance with a switching signal First and second output buffers 86 and 88 for buffering and outputting luminance data and chromaticity data passed through the title unit 84, respectively, and luminance / chromatic level generation of the luminance level generating unit 68 and the chromaticity level generating unit. A multi-screen reproduction processing apparatus for fax information of a fax machine, characterized in that it comprises an image conversion control unit (90) for controlling the image. The method of claim 1 or 3, wherein the chromaticity level generator of the image conversion processor 26 generates red, green, and blue signals corresponding to the television video standard under the enable control of the image conversion controller 90. The red, green, and blue level generators 72, 74, and 76, which generate red, green, and blue level data, respectively, and the red, green, and blue colors are generated according to the chromaticity coefficients generated from the image conversion controller 92. And a plurality of chromaticity synthesis filters (78, 80, 82) for varying the chromaticity of the red, green, and blue level data generated from the level generators (72, 74, 76). Fax Information Multi-screen playback processing unit. 2. The first and second line memories 92 and 94 according to claim 1, wherein the signal compression processing means 28 stores fax luminance / chromatic data generated from the image conversion processing means 26 in units of scanning lines, respectively. A first clock generator 96 for generating a recording clock signal WCK for synchronizing the recording and storing operation of the fax luminance data and the fax chromaticity data to the first and second line memories 92 and 94; A second clock for providing a read clock signal RCK having a clock period different from that of the write clock signal WCK so that the fax luminance / chromatic data from the first and second line memories 92 and 94 are compressed and read; The generation unit 98 generates the write and read control signals WE and RE for data compression processing in the first and second line memories 92 and 94, and the first and second line memories (the first and second line memories). 92 and 94), the fax luminance data and the fax chroma data are combined with the vertical / horizontal synchronization signal. The signal compression control unit 100 for controlling the data, the data summation unit 102 for data summing the fax luminance / chromatic data from the first and second line memories 92 and 94, and the fax luminance data and the fax chromaticity. A synchronizing generator for generating a vertical / horizontal synchronizing signal synchronized with data compression processing of data, and the synthesized data of the fax luminance / chromatic data under the control of the signal compression control unit 100 and the vertical / horizontal synchronizing unit from the synchronizing generator. And a multiplexer (110) for selectively multiplexing signals so as to be analog-converted and output through a signal conversion unit (112). 6. The synchronization generating unit of the signal compression processing unit (28) according to claim 5, wherein the synchronization generating unit of the signal compression processing unit (28) is vertical from the television broadcast signal reproduced on one screen in synchronization with the read clock signal (RCK) from the second clock generation unit (98). The image is reproduced on one screen in synchronization with the vertical synchronization unit 104 for outputting a variable synchronization signal period for the synchronization signal VS and the read clock signal RCK from the second clock generator 98. A horizontal synchronizing section 106 for varying and outputting a synchronizing signal period for the horizontal synchronizing signal HS from a television broadcast signal, and a vertical / variable synchronizing signal period from the vertical / horizontal synchronizing sections 104 and 106; A fax information multi-screen reproduction processing apparatus for a fax function television, comprising: a no-gate 108 for outputting a logical synchronizing signal for outputting a horizontal synchronization signal.