KR100215815B1 - Facsimile data recording and reproducing device of a digital vcr - Google Patents

Abstract

The fax data recording / playback device of DVCR has been proposed, the problem of waste of fax paper, the problem of not receiving fax data when there is no fax paper, and the recording and playback of fax data on helical track using helical head. Therefore, in order to solve the problem of not being able to record and play back fax data at the same time, the authorized fax data should be recorded on the audio track or video track of the video tape using the linear head. The data is detected and recorded on a tape using a linear head, and the recorded fax data can be displayed on another screen of one side of the screen using the linear head according to one selection signal.

In addition, when the authorized fax data is recorded on the video tape and the user records the recorded fax data, the fax data search status is displayed on the screen in OSD form, and in the A / D combined VCR, the digital broadcast recording is performed. To record fax data on an audio track using an unused audio head, detect fax data and record it on a video tape, and detect the presence or absence of a tap of the video tape. It is determined that the tape is not recordable so that the detected fax data is displayed directly on the screen.

Description

DVD Seed's Fax Data Recorder

1 is a block diagram of a facsimile device having a VCR according to the prior art.

2 is a block diagram of a DVCR fax data recording / reproducing apparatus according to a first embodiment of the present invention.

3 is a diagram illustrating a first embodiment of a detailed block configuration of the first format conversion unit in FIG.

4 is a diagram illustrating a second embodiment of a detailed block configuration of the first format conversion unit in FIG.

FIG. 5 is a diagram illustrating a first embodiment of a detailed block configuration of the second format conversion unit in FIG.

6 is a view showing a second embodiment of the detailed block configuration of the second format conversion unit in FIG.

7 is a diagram showing a pattern of tracks when recording fax data.

8A to 8B are diagrams showing an example of a screen displaying a fax data recording state and a search state;

9 (a) is a data structure diagram in format conversion

(b) is a hardware configuration according to (a)

10 is a track configuration diagram in the recording of fax data and A / V data according to the present invention.

FIG. 11 (a) is a hardware configuration diagram for simultaneous recording / reproducing of fax data and A / V data

(b) is software subject to the hardware of (a)

12 is a block diagram of a DVCR fax data recording / reproducing apparatus according to a second embodiment of the present invention.

FIG. 13 is a diagram showing a first embodiment showing a detailed block configuration of a third format conversion unit in FIG.

FIG. 14 is a diagram showing a second embodiment showing a detailed block configuration of a third format conversion unit in FIG.

15 is a block diagram of a DVCR for recording fax data by determining whether or not it is a recordable tape as a third embodiment of the present invention.

Explanation of symbols for main parts of the drawings

21: Tuner 22: Demux & A / V Decoder

23: D / A converter 24: Processor

25 display unit 26 modem

27: control unit 28, 29, 35: first, second, third, format conversion unit

30: fax data recording processing unit 31: A / V recording processing unit

32: A / V playback processing section 33: Fax playback processing section

34: switching unit 36: tap presence detection unit

37: videotape

The present invention relates to a DVCR, and more particularly, to a fax data recording / reproducing apparatus of a DVCR.

In general, facsimile communication using a telephone line network is a very convenient communication method because it can transmit information such as letters and numbers, and can communicate with a facsimile apparatus on the other side even when the other side is absent.

Hereinafter, a fax data recording / reproducing apparatus of a DVCR according to the prior art will be described with reference to the accompanying drawings.

Figure 1 shows a block diagram forming an arrangement of a facsimile device with a helical scanning VTR according to the prior art.

Referring to FIG. 1, the modem 2 receives a facsimile signal on the transmitted telephone line network and also transmits a facsimile signal to the telephone line network.

The modem 2 has a central processing unit (CPU) for performing various signal processing and configurations to supply the received fax signal to the workstation 3.

When the facsimile signal received by the modem 2 is supplied to the workstation 3, the workstation 3 processes the received facsimile signal and processes the 8 mmVTR 5 or the VCR through the data buffer circuit 4. The supplied signal.

Subsequently, the 8 mm VTR 5 records the processed signal on a recording medium, i.e., magnetic tape. The magnetic tape used for the 8 mm VTR 5 has a pulse code modulation (PCM) area and a video track area.

The previous data of the facsimile signal according to the prior art is recorded on the pulse code modulation (PCM) area according to the PCM audio format of 8 mm VTR (5), and the facsimile signal is converted to an NTSC television signal and then recorded on the video track area. .

The binary data of the facsimile signal is recorded under the control of the workstation 3 on the pulse code modulation area of the magnetic tape, and the time code is recorded in advance on the area.

In this case, the binary data of the recorded facsimile signal may be a compressed modified huffman (MH), modified read (MR), or G3 or G4 facsimile signal of the modified modified huffman (MMR) band.

In the case of recording a multipage facsimile signal on a magnetic tape, the facsimile signal is arranged every day, and then the index signal list is provided in the header portion of each facsimile signal of the day.

When a facsimile signal is mixed and contains letters, numbers, and one page, the content of one page is divided into multiple parts, for example five parts, and then each part is a television signal for recording on the tape. By switching to, the searcher can easily identify the facsimile signal on the TV set for home use.

In this case, the received facsimile signal is divided into several windows according to the contents of one page, and in the separated image of the frame device, each image is m pixels (depth) * n pixels (horizontal) according to each window. It is doubled by magnification and thus recorded on tape.

Each of the divided images per one frame consists of at least eight frames, which are then doubled by an integer and recorded in the video track area.

The facsimile signal recorded at the time of reproduction can be easily recognized by the NTSC television monitor 6 by searching the image reproduced on the screen through the fast search operation, which is a cue or review operation.

The output signal reproduced from the 8 mm VTR 5 is supplied to the TV monitor 6, and then the television signal recorded on the video track area of the magnetic tape is reproduced on the area according to the instruction of the workstation 3. .

The printer 7 prints the binary data of the facsimile signal reproduced by the 8 mm VTR 5 and recorded on the pulse code modulation area in accordance with the instructions of the workstation 3.

When the scanner 8 decodes letters or numbers and is supplied to the workstation 3 via the modem 2 as a facsimile signal, the facsimile signal is converted into binary data in accordance with the audio PCM signal, and then the pulse code of the magnetic tape. It is supplied to the 8 mm VTR 5 through the buffer circuit 4 for reproduction on the modulation area.

Furthermore, the received facsimile signal is converted by the workstation 3 into an NTSC television signal and then supplied to the 8 mm VTR 5 through the buffer circuit 4 for recording on the video track area of the magnetic tape.

In this case, data indicative of the timecode and the received time, etc., controlled by the workstation 3 are recorded on the facsimile signal as well as the video track area.

Therefore, the facsimile signal recorded on the magnetic tape is recorded on the TV monitor 6 because the facsimile signal received by the conventional facsimile apparatus is converted into an NTSC television signal, which is then recorded on the video track area of the magnetic tape. By supplying, it can be displayed as a video image on the screen.

Moreover, the recorded facsimile signal can be retrieved on the screen at high speed, just like normal VTRs, i.e. by using a recorded television signal on a videotrack area that is in a cue or review operation. In addition, the binary data of the facsimile signal recorded on the pulse code modulation area corresponding to the predetermined information of the television signal recorded by the fast search operation can be printed on the paper by utilizing the data on the time code and the reception time. On the other hand, high quality printing can be realized while reducing the amount of paper to be used for only necessary information.

At this time, the conventional facsimile apparatus described above has the following problems.

Since fax data is recorded and reproduced on the helical track using the helical head, there is a problem in that the fax data cannot be simultaneously recorded and reproduced.

In addition, there is another problem that the cost is increased because of the simple connection configuration of the fax and the VCR.

Accordingly, the present invention has been made to solve the above-mentioned problems according to the prior art, and an object of the present invention is to provide a video tape on a video tape in a DVCR for recording a digital signal output from an IRD having a modem. To provide a DVCR that can record and play back. Another object of the present invention is to provide a DVCR which makes it possible to easily search for fax data in recording / reproducing fax data on a video tape.

A feature of the present invention for achieving the above object is characterized by recording the applied fax data on the linear track of the video tape using a linear head.

Another feature of the present invention is to simultaneously record fax data that is applied during digital broadcast signal recording / reproduction.

Another feature of the present invention for achieving the above object is to detect the fax data applied even during the recording / playback of digital broadcast signal, and to write to the tape using a linear head, and to write the recorded fax data in accordance with one selection signal linear It is characterized by playing with the head and displaying it on another screen on one side of the screen.

Another feature of the present invention for achieving the above object is to display the status of the applied fax data on the video tape and the fax data search status when the user searches the recorded fax data in the OSD form on the screen. It is characterized by.

Another feature of the present invention for achieving the above object is characterized in that, in an A / D combined VCR, fax data is recorded on an audio track using an audio head which does not use a digital broadcast proxy.

Another feature of the present invention for achieving the above object is to detect the fax data and to record on the video tape, it is possible to detect the presence of a tap (tap) of the video tape, the recording is not possible if there is no tap of the tape It is determined that the tape is not displayed, and the detected fax data is displayed directly on the screen.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a DVCR capable of recording / reproducing fax data according to the present invention will be described in detail with reference to the accompanying drawings.

[First Embodiment]

2 shows a block diagram of a DVCR capable of recording / reproducing fax data according to a first embodiment of the present invention.

First, the modem 26; An IRD having a tuner 21 for receiving a digital broadcast signal and a demux and decoder 22 for decoding the received signal; A first format converter (28) for converting the fax data applied through the modem (26) into a data format that can be recorded on the videotape (37) according to one control signal; A fax data recorder (30) for recording the converted fax data on a video tape (37); A fax data reproducing processor (33) for reproducing the recorded data; An A / V recording processor (31) for recording the digital A / V data received through the IRD on the video tape (37); An A / V reproducing processor 32 for reproducing the recorded A / V data; A second format converter (29) for converting the reproduced fax data into a data format that can be displayed according to one control signal; A PIP processor 24 for controlling the converted fax data to be displayed in a predetermined area of a broadcast screen; A display unit 25 for displaying the A / V data and the fax data; The control unit 27 detects whether the fax data received through the modem 26 is received and provides the control signal.

In this case, the first format converter 28 converts the fax data applied through the modem 26 into a sync block format to which sink, ID, and parity are added, as shown in FIG. Part 28a; And a storage unit 28b for temporarily storing the formatted fax data and outputting the formatted fax data according to the data request signal of the fax data recording processing unit 30.

In addition, as shown in FIG. 4, the first format converter 28 includes a fax decoder 28c which decodes fax data applied through a modem 26 and outputs black image data; A sync block format unit 28a for converting the black and white image data output from the fax decoder 28c into a data format to which sync, ID, and parity are added; And a storage unit 28b that temporarily stores the formatted fax data and outputs the data according to the data request signal of the fax data recording processing unit 30.

In addition, as shown in FIG. 5, the second format conversion unit 29 temporarily stores the fax data reproduced by the fax data reproducing processing unit 33 and according to one control signal of the control unit 27. A storage unit 29a for outputting; A sync block deformatting unit (29b) for formatting the formatted fax reproduction data output from the storage unit (29a); A fax decoder (29c) for decoding the deformatted fax data; And a D / A converter 29d for converting the decoded digital fax data into analog data.

In addition, as shown in FIG. 6, the second format converter 29 temporarily stores the fax data reproduced by the fax data reproducing processor 33, and then stores the fax data in one control signal of the control means 27. A storage unit 29a for outputting along; A sync block deformatting unit (29b) for formatting the formatted fax reproduction data output from the storage unit (29a); And a D / A converter 29d for converting the deformatted digital fax data into analog data.

The operation of the apparatus according to the first embodiment of the present invention configured as described above is as follows. First, a broadcast signal transmitted from a digital broadcast signal source (digital broadcast station) is received through an IRD.

The received broadcast data is displayed on the TV screen and recorded on the video tape 37 through the A / V recording processor 31.

When the recorded A / V data of the digital broadcast signal is reproduced on the TV screen, it is displayed on the TV screen by the A / V data reproducing processor 32.

Here, the recording and reproducing of the A / V data are recorded on the helical track of the videotape 37 using the helical head and reproduced using the helical head, as shown in FIG.

In addition, the fax data applied to the telephone line network is sensed by the control unit 27 through the modem 26, the applied fax data is a control signal of the control unit 27 in the first format conversion unit 28 In this way, information such as sync, ID, parity, and the like are converted into a data format to be recorded on the videotape 37, and applied to the fax data recording processing section 30.

The fax data recording processing section 30 is recorded on the linear track of the video tape 37 using a linear head, as shown in FIG.

On the other hand, the fax data may be recorded using an audio head or a linear head on an audio track not used for digital recording in an A / D combined VCR (see FIG. 7 (a)), and the fax data may be recorded on a video track. You can also record in depth (see Figure 7 (b)).

Here, the recording speed of general fax data is about 28800 BPS, while the recording speed of recording fax data on an audio track using the audio head is about 100 KBPS.

The recorded fax data is reproduced using the linear head of the fax data reproduction processing section 33 and applied to the second format conversion section 29.

The second format converter 29 is deformatted according to one control signal of the controller 27 and applied to the PIP processor 24.

The PIP processor 24 designates a certain area of the screen currently being broadcast so that the broadcast screen and the fax data can be displayed at the same time to display the reproduced fax data on the display unit 25.

In addition, the recording state of the fax data and the search state of the recorded fax data are as shown in FIG. 8, when the fax data is recorded in a predetermined area of the display unit 25. FAX SEARCH is displayed in the form of OSD to allow the user to check the current status of the operation.

FIG. 9 (a) shows a data structure diagram during format conversion in the first format converter of FIG. 2, and (b) shows a hardware structure diagram for the data structure of (a).

FIG. 9A illustrates data in the sync block formatter 26a of the first format converter 26 of FIG. 2 by adding information such as sink, ID, and parity.

In order to configure the data, as shown in FIG. 9 (b), the MUX is selectively outputted according to the timing control of the controller 27 to configure the data as described above.

Fig. 11 (a) is a hardware configuration diagram for simultaneous recording / reproducing of fax data and A / V data, and (b) shows software according to the hardware of (a).

First, recording / reproducing of fax data and A / V data is performed at the same time or separately from each other according to the control signal of the control unit 27.

That is, referring to FIG. 11B, first, the control signal of the controller 27 is 0 to the switch A to which the fax data is applied, and 0 to the switch B to which the A / V data is applied. If authorized, only authorized fax data can be recorded and played back. If the control signal is 0 1, only A / V data can be recorded / played back.

In addition, when the control signal 110 is applied, only the A / V data and the fax data can be recorded at the same time. When the control signal of 1 1 is applied, the A / V data and the fax data can be simultaneously reproduced.

Second Embodiment

FIG. 12 is a block diagram of a DVCR capable of recording / reproducing fax data according to a second embodiment of the present invention. FIG. 13 is a first embodiment showing a detailed block diagram of a third format converter in FIG. FIG. 14 is a second embodiment showing a detailed block configuration of the third format converter in FIG.

In this embodiment, description of the same components that overlap with those in the first embodiment will be omitted.

First, the configuration thereof includes: a third format conversion unit 35 for converting the reproduced fax data into a data format that can be displayed; A multiplexer 34 for selectively or simultaneously outputting A / V data reproduced by the A / V reproducing processor 32 and fax data output by the third format converter 35 according to a control signal; Only the configuration of the control unit 27 which detects whether the fax data applied through the modem 26 is received and provides the one control signal is different from the first embodiment.

Here, the third format conversion unit 35 includes a storage unit 35a which temporarily stores the fax data reproduced by the fax data reproduction processing unit 33 and outputs the data according to one control signal of the control unit 27; A sync block deformatter 35b for reformatting the formatted fax reproduction data output from the storage 35a; A fax decoder (35c) for decoding the deformatted fax data; It consists of a semi-encoder 35d which encodes the decoded fax data again.

In addition, the third format converting unit 35 includes a storage unit 35a for temporarily storing the fax data reproduced by the fax data reproducing processor 33 and outputting the fax data according to a control signal of the control unit 27; A sync block deformatter 35b for reformatting the formatted fax reproduction data output from the storage 35a; It consists of a semi-encoder 35d which encodes the deformatted fax reproduction data.

Looking at the operation according to the configuration, the A / V data and the fax data recorded on the video tape 37 is reproduced by the A / V playback processing unit 32 and the fax data playback processing unit 33 to the switching unit 34. Is approved.

Each of the applied data is selectively applied to the demux and the decoder 22 of the IRD according to one selection signal of the control unit 27, and the selectively applied data is applied according to one control signal of the control unit 27. It is output to the A converter 23 and converted into analog data.

The converted analog data is displayed on the display unit 25, that is, the entire TV screen, according to a control signal of the control unit 27.

In the first embodiment, a part of the screen is designated according to the PIP adjustment of the TV screen to display the TV broadcast screen and the fax data at the same time. In this embodiment, the A / V data or the fax data is displayed on the entire display unit 25. To display selectively on the screen.

Incidentally, since fax data and A / V data recording / reproducing means and various exemplary operations thereof are the same as those of the first embodiment, description thereof will be omitted.

Third Embodiment

FIG. 15 shows a block diagram of a DVCR for recording fax data by determining whether or not it is a recordable tape as a third embodiment of the present invention.

Here, looking at the configuration, in the DVCR fax data recording / reproducing apparatus provided with the fax modem 26,

A first format converter (28) for converting the fax data applied through the modem (26) into a data format to which sink, ID, and parity are added; A fax data recording processor 30 for recording the formatted fax data in a predetermined area of the video tape 37; A tap presence detector (36) for detecting a tap presence of the video tape (37); A control unit for generating a facsimile data recording permission signal based on the detection result of the tap and providing the signal to the first format conversion unit 28 to directly display the facsimile data on the screen if it is determined that the tape is not allowed. 27); It is composed of a display unit 25 for displaying the fax data in accordance with the control signal of the control unit 27.

An operation according to the configuration will be described.

First, the control unit 27 detects the fax data applied through the modem 26, and the fax data is applied to the first format conversion unit 28 to which data such as sync, ID, parity, etc. are added. Is converted to.

At this time, the tap presence detection unit 36 detects whether there is a tap in the video tape 37 inserted into the deck of the VCR.

When the detected result, that is, the tap presence signal of the video tape 37 is applied to the control unit 7, the control unit 27 determines whether the video tape 37 is a recordable tape according to whether there is a tap or not, and allows recording. The signal is output to the first format converter 28.

Here, if there is a tab in the video tape 37, the control section 27 determines that the tape is recordable, and if there is no tab, the tape is determined as non-recordable tape.

Therefore, when the recording permission signal is applied to the first format conversion unit 28, the fax data recording processing unit 30 records the fax data in a predetermined area of the video tape.

On the other hand, when a non-recordable signal is applied to the first format conversion unit 28, the first format conversion unit 28 displays the fax data directly on the display unit 25 according to one control signal of the control unit 27. .

The fax data recording processing section 30 records the linear tracks of the video tape 37 using the linear head as shown in FIG.

In addition, the fax data may be recorded using an audio head or a linear head on an audio track not used for digital recording in an A / D combined VCR (see FIG. 7 (a)). You can also record in depth (see Figure 7 (b)).

Here, the recording speed of a typical fax data is about 28800 BPS, while the recording speed of recording fax data on an audio track using the audio head is about 100 BSKP.

As described above, the fax data of the DVCR according to the present invention is displayed on the video tape and the fax data search status is displayed on the screen when the user searches the recorded fax data on the screen. As an advantage, the user can easily determine the situation.

In addition, in detecting and recording the fax data on the video tape, the presence or absence of a tap of the video tape is detected, and if there is no tap of the tape, it is determined that the tape is not recordable and the detected fax data is displayed on the screen. Because it is displayed directly on the screen, it has the advantage of eliminating the trouble of recording on the tape and playing back the recorded data again.

In addition, since it is not a simple combination of the facsimile apparatus and the VCR, there is an advantage that the waste of the facsimile paper can be eliminated and the cost thereof can be lowered.

In addition, since the fax data is recorded / reproduced using the linear head, the A / V data and the fax data can be simultaneously recorded / reproduced.

Claims (13)

A modem for receiving fax data, an IRD for receiving digital broadcast signals, a control unit for generating control signals for recording and reproducing format conversion of fax data, and fax data applied through the modem to control signals of the control unit. A recording format converting unit for converting the format to be recorded on the video tape, a fax data recording / reproducing unit for recording / reproducing the output of the format converting unit on the video tape, and the reproduced fax data in a control signal of the control unit. And a playback format conversion unit for converting the format into a format that can be displayed according to the present invention, and a broadcast signal recording / reproducing unit for recording / reproducing the digital broadcast signal received from the IRD. Fax data recording / playback equipment of DVCR for simultaneous / selective recording / playback according to control signal Chi. A DVCR fax data recording / reproducing apparatus having a modem, comprising: means for converting fax data applied through the modem into a data format with a sink, ID, and parity; and converting the formatted fax data into a videotape. Means for recording in an area, means for detecting the presence or absence of a tap on the video tape, and a tape which generates a facsimile data recording permission signal in accordance with the detection result of the tap and provides it to the format conversion unit so that recording is not allowed. And a means for controlling the user to recognize the data when the data is judged to be recognized by the user. The DVCR fax data recording / reproducing apparatus according to claim 2, wherein the control means displays the fax data directly on the screen when the tape is non-recordable tape. The apparatus of claim 1, wherein the recording format conversion unit temporarily stores the format of the sync block format unit for converting the fax data applied through the modem into a sync block format to which sink, ID, and parity are added. And a storage unit for outputting the data according to the data request signal of the fax data recording / reproducing unit. The apparatus of claim 1, wherein the recording format converter is further configured to add a fax decoder to decode fax data applied through the modem and output black and white image data, and to add the black and white image data output from the fax decoder to a sink, ID, and parity. And a sync block format unit for converting the converted data format into a formatted data format, and a storage unit for temporarily storing the converted format fax data and outputting the data according to the data request signal of the fax data recording / reproducing unit. Playback device. The apparatus of claim 1, wherein the reproduction format converting unit comprises: a storage unit temporarily storing the fax data reproduced by the fax data recording / reproducing unit and outputting the fax data according to a control signal of the control unit; And a sync block deformat unit for deformatting the converted fax reproduction data, a fax decoder for decoding the deformatted fax data, and a D / A converter for converting the decoded digital data into analog data. DVCR fax data signal recording / playback device. The apparatus of claim 1, wherein the reproduction format conversion unit comprises: a storage unit for temporarily storing the fax data reproduced by the fax data recording / reproducing unit and outputting the fax data according to a control signal of the control unit; And a sync block deformatting unit for deformatting converted fax data, and a D / A converting unit for converting the deformatted digital fax data into analog data. The apparatus as claimed in claim 1, further comprising PIP processing means for controlling the format-converted fax data to be displayed in a predetermined area of a broadcast screen. The apparatus of claim 1, further comprising a multiplexing unit for selectively or simultaneously outputting audio / video data reproduced by the broadcast signal recording / reproducing unit and a control signal of a fax data control unit output by the reproduction format converting unit. DVCR fax data recording / playback device. 2. A fax data recording / reproducing apparatus according to claim 1, wherein said fax data recording / reproducing section includes an audio head so that recording of fax data can be performed on a linear track of a video tape. The DVCR fax data recording / reproducing apparatus according to claim 1, wherein said fax data recording / reproducing section includes a deep recording head so that recording of fax data can be performed on a helical track of a video tape. The apparatus of claim 1, wherein the reproduction format conversion unit comprises: a storage unit temporarily storing the fax data reproduced by the fax data recording / reproducing unit and outputting the fax data according to a control signal of the control unit; and a format conversion unit output from the storage unit. A sync block deformat unit for deformatting the converted fax reproduction data, a fax decoder for decoding the deformatted fax data, and a semi-encoder for re-coding the decoded fax data. Fax data recording / playback device. The apparatus of claim 1, wherein the reproduction format conversion unit comprises: a storage unit temporarily storing the fax data reproduced by the fax data recording / reproducing unit and outputting the fax data according to a control signal of the control unit; and a format conversion unit output from the storage unit. And a sync block deformatting unit for deformatting the converted fax reproduction data, and a semi-encoder for encoding the deformatted fax reproduction data.