KR0135155B1 - Pacsimile recording apparatus using vcr - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile recording apparatus using a VCR, including a facsimile (1) and a facsimile (1) for scanning an original to be transmitted and converting it into an electrical signal for transmission through a transmission path and receiving a signal transmitted through the transmission path. 1) interface means (3) for performing a matching function for recording the signal received on 1) to the tape and displaying on the monitor, and a VCR for recording the signal received through the interface means (3) on the tape or displaying on the monitor. It is characterized by consisting of (2).

Therefore, the present invention stores the signal burned out by facsimile by using a video tape, thereby enabling permanent preservation, and displaying on a TV screen, thereby providing a convenient effect.

Description

Facsimile recorder

1 is a structural diagram of a conventional facsimile.

2 is a block diagram of a facsimile recording apparatus according to the present invention.

FIG. 3A is a detailed block diagram of the transmitter of FIG.

3b is a detailed configuration diagram of the receiver of FIG.

4 is a detailed configuration diagram of the interface unit of FIG.

5 is a detailed configuration diagram of the detector of FIG.

6 is a flowchart showing the operation of the facsimile recording apparatus according to the present invention.

* Explanation of symbols for the main parts of the drawings

1: facsimile 2: VCR

3: interface unit 4,11 photoelectric conversion unit

5,15: all-optical conversion unit 6,13: transmission unit

12: transmitter 14: receiver

21: switching unit 22: detection and amplification unit

23: Y / C section 24: head recording section

25 monitor unit 31 RF amplifier unit

32: Mixer 33: IF Amplifier

34 filter 35 limiter

36: local frequency generator 37: comparator

38,121,123,141,143: amplifier 39: converter

122: modulator 142: demodulator

361: VCO 362: divider

363: PC 364: LPF

365: reference frequency oscillator 371: idle circuit

372: multiplexer.

The present invention relates to a facsimile recording apparatus, and more particularly, to a facsimile recording apparatus using a VCR for storing a signal transmitted by the facsimile on a tape of a VCR.

1 is a structural diagram of a conventional facsimile.

The conventional facsimile comprises a photoelectric conversion section 4, an all-optical conversion section 5, and a transmission section 6, as shown in FIG.

The photoelectric conversion unit 4 decomposes the micropoints of the photographs, drawings, and the like by electric scanning, and decomposes the intensity of the pixels decomposed by the scanning into pixel currents.

The transmission unit 6 is for amplifying, modulating and filtering the electrically converted signal output from the photoelectric conversion unit 4 through a transmission line, which is a transmission path.

The all-optical converter 5 converts the electrical signal output from the transmission path 6 into light energy to reproduce the original.

The transmission originalization to be transmitted is decomposed into minute points through the electrical scanning in the photoelectric conversion section 4, and the contrast of the pixels decomposed by the scanning is decomposed into pixel currents. The electrical scan is usually made of a scan of 3 to 6 lines per mm and the scanning method is a planar scan method and a cylindrical scan method.

The signal decomposed into the pixel current in the photoelectric conversion unit 4 is transmitted through a transmission path through amplification, modulation, and filtering processes in the transmission unit 6.

In addition, the signal received through the transmission path is input to the all-optical conversion unit 5 through the amplification and demodulation process in the transmission unit (6).

The electrical signal output from the transmission unit 6 is converted into the light energy in the all-optical conversion unit 5 to reproduce the original.

However, the conventional facsimile only has the function to receive and print the transmitted signal, there is no recording device and display device, there is no recording paper can not receive the transmitted signal, if there are many transmitted signals, it is difficult to record, heavy printing Due to the problem that the life of the fax is shortened.

In order to solve the above problems, an object of the present invention is to provide a facsimile recording apparatus using a VCR that can store the signal transmitted by the racissime on the tape of the VCR to overcome the limitation of recording.

The facsimile recording apparatus using the VCR of the present invention for achieving the above object comprises a VCR comprising a facsimile for receiving an electrical signal through a transmission path and a VCR for recording a video signal based on the electric signal received in the facsimile on a tape A facsimile recording apparatus, comprising: RF amplifying means for amplifying an RF output signal output from the facsimile or more by a predetermined level, a local frequency generating means for generating a predetermined local frequency, and the local frequency and the amplified RF output signal. Mixing means for mixing and converting the IF output signal into an IF output signal, IF amplifying means for amplifying the converted output IF output signal by a predetermined level or more, filter and limiter means for removing noise contained in the amplified IF output signal; Detection and amplification means for detecting and amplifying the IF output signal from which the noise is removed; In yirueojim to the interface means comprising a converting means for outputting an output signal by repeating a plurality of fields further includes has its features.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

2 is a block diagram of a facsimile facsimile recording apparatus according to the present invention.

The facsimile recording apparatus using the VCR according to the present invention comprises a facsimile 1, an interface unit 3, and a VCR 2, as shown in FIG.

The facsimile 1 scans a transmission original and converts it into an electrical signal and transmits it through a transmission path, and converts a signal transmitted through the transmission path into optical energy and reproduces the original signal.

The interface unit 3 functions to match the facsimile 1 and the VCR 2 to transmit the signal received by the facsimile 1 to the VCR 2 through a transmission path.

The VCR 2 performs a function of recording a signal transmitted through the interface unit 3 on a tape and displaying it on a monitor.

The facsimile 1 includes a photoelectric converter 11, a transmitter 12, a transmitter 13, a receiver 14, and an all-optical converter 15.

The photoelectric conversion unit 11 uses the same horizontal and vertical synchronization signals as those of the TV to decompose characters, numbers, diagrams, etc. of the original picture into pixel units and convert them into electrical signals according to business cards.

In other words, the planar scanning method is the same as the conventional method, but generates a signal including a vertical synchronization signal which differs at a line frequency.

In other words, the horizontal and vertical synchronization of the TV broadcast is used.

In addition, the plane-scanned signal is divided into odd and even times to transmit the signal per line again in the same manner as interlaced scanning of the TV signal.

The transmitter 12 filters the amplified and modulated signal output from the photoelectric converter 11 and outputs the filtered signal to the transmitter 13.

Modulation methods include DSB and residual side band method (VSB), which use VSB for high speed transmission.

The transmission unit 13 is composed of a switching circuit to transmit a signal output from the transmission unit 12 to the transmission path, or to transmit a signal received from the transmission path to the reception unit 14 for printing, or the interface unit 3 It is a switching function for transmitting to the VCR (2).

The receiver 14 demodulates, amplifies, and filters the signal output from the transmitter 13 and outputs the signal to the all-optical converter 15.

The all-optical converting unit 15 converts the electric signal output from the receiving unit 14 into light energy to reproduce the original load.

The interface unit 3 detects and amplifies the modulated signal received by the switching operation of the transmission unit 93. The detection method is similar to that of a conventional TV, but the carrier frequency is fundamentally different.

That is, a signal of one field having a low broadcast frequency and detected is repeatedly made into several fields.

The VCR 2 is composed of a switching unit 21, a detection and amplifying unit 22, a Y / C 23, a recording unit 24, and a monitor unit 25.

The detection and amplifying unit 22 performs a function of a TV by detecting and amplifying a signal received by being tuned through an antenna.

The switching unit 21 switches the TV broadcast signal output from the detection and amplification unit 22 and the facsimile transmission signal output from the interface unit 3 in advance.

The Y / C unit 23 functions to separate Y / C signals output from the switching unit 21.

The recording section 24 records the signal output from the Y / C section 23 on a tape through the drum head of the VCR.

The monitor unit 25 displays the signal monitor output from the Y / C unit 23.

The interface unit 3 generates a signal in which a single field is repeated several times so as to display for a few seconds.

The original image to be transmitted is scanned in the planar scanning method by the photoelectric conversion unit 11, light is converted into an electrical signal, amplified and modulated by the transmission unit 12, and transmitted through the transmission unit 13.

The signal received by the transmission unit 13 through the transmission path is printed by the reception unit 14 and the all-optical conversion unit 15 by the switching operation of the transmission unit 13, or by the interface unit 3 and the VCR ( 2) is written to tape.

That is, the signal received by the transmitter 13 is demodulated, amplified and filtered by the receiver 14 by a switching operation of the transmitter 13, and is converted into light energy by the all-optical converter 15 to be converted into original energy. Is printed.

In addition, the signal received by the sound transmitting unit 13 is detected and amplified through the interface unit 3 by the switching operation of the transmitting unit 13, and the Y by the switching operation in the switching unit 21 of the VCR92. It is input to the / C unit 23.

The signal output from the interface unit 3 is separated into Y / C in the Y / C unit 3, recorded in the recording unit 24, and displayed on the monitor unit 25. In addition, the TV broadcast received through the antenna by the switching operation of the switching unit 21 is separated into the Y / C in the Y / C unit 23 through the detection and amplification unit 22, the recording unit 24 and the monitor unit It may also be output to (25).

3A is a detailed block diagram of the transmitter 12 of FIG. 2, and FIG. 3B is a detailed block diagram of the receiver 14 of FIG.

The transmitter 12 includes two amplifiers 121 and 123 and a modulator 122 as shown in FIG. 3A.

The amplifier 121 amplifies a signal in which the transmission source is converted into an electrical signal by horizontal and vertical synchronization signals in the photoelectric conversion unit 11.

The modulator 122 modulates the output signal of the sound amplifier amplification unit 121 at a low carrier frequency.

The amplifying unit 123 amplifies the output signal by the modulator 122 and outputs the amplified signal to the transmitting unit 13.

The receiver 14 includes two amplifiers 143 and 141 and a demodulator 142 as shown in FIG. 3B.

The amplifier 143 amplifies the signal received from the transmitter 13, the demodulator 142 demodulates the output signal of the amplifier 143, the amplifier 141 is a demodulator ( The output signal of 142 is amplified and output to the all-optical converter 15.

The signal output from the photoelectric converter 11 is amplified by the amplifier 121, modulated by the modulator 122, amplified by the amplifier 123, and output to the transmitter 13.

The signal received through the transmitter 13 is amplified by the amplifier 143 and demodulated by the demodulator 142 and then amplified by the amplifier 141 and output to the all-optical converter 15. .

4 is a detailed configuration diagram of the interface unit 3 of FIG.

As shown in FIG. 4, the interface unit 3 includes an RF (Radio Frequency) amplifier 31, a mixer 32, an IF (Intermediate Frequency) amplifier 33, a filter 34, A limiter 35, a local frequency generator 36, a detector 37, an amplifier 38, and a converter 39 are provided.

The RF amplifier 31 RF amplifies the modulated facsimile signal received through the transmitter 12 to improve the signal / noise ratio and increase the gain.

The mixer 32 converts an IF frequency using a frequency output from the local frequency generator 36 to detect a modulated signal output from the RF amplifier 31.

Heterodyne method is used for the change method, and IF frequency should be set in consideration of TV channel reception frequency and video frequency in order to exclude the effect due to interference of TV radio waves.

The local frequency generator 36 always generates a constant local frequency and outputs it to the mixer 32.

The IF amplifier 33 amplifies the signal output from the mixer 32 through several stages of amplifier stages to increase the gain, and uses a differential amplifier as an amplifier.

The filter 934 filters the high frequency and unnecessary noise generated during the IF conversion from the signal output from the IF amplifier 33.

The limiter 35 removes the impact noise higher than the reference level and the general noise component from the signal output from the filter 34 to obtain a constant level signal. In particular, the amplitude-modulated signal has the impact noise higher than the reference level and the general noise. This is because there are many components.

The detector 37 detects a signal output from the limiter 35, and the amplifier 38 amplifies the signal output from the detector 37.

The converter 39 repeatedly outputs signals of two fields received through the transmission line of the facsimile and output from the detector 37 to the field of the VCR or to display them on the monitor.

That is, in order to display the signal of one field on the monitor unit 25, 30 fields must be displayed on the screen per second, and the signal of one field is repeatedly outputted so that the signal of one field can be repeatedly recorded.

The signal received from the transmitter 13 is RF amplified in order to improve the S / N ratio and increase the gain in the RF amplifier 31, and output from the local frequency generator 36 in the mixer 32. The local frequency is converted to the IF frequency.

The output signal of the mixer 32 is amplified by the IF amplifier 33 and the high frequency generated during IF conversion by the filter 34 and unnecessary noise are removed.

The output signal of the filter 934 becomes a signal of a constant level in the limiter 35, is detected by the detector 37, and then amplified by the amplifier 38.

The signal output from the amplification section 38 is repeatedly output in the field section 21 of the VCR 2 in a plurality of fields for recording on a tape of the VCR or for display on a monitor.

The local frequency generator 36 always generates a constant local frequency and outputs it to the mixer 32. The VCO (Voltage Control Osckllator) 361, the divider 362, the PC 363, the reference frequency oscillator 365 ) And a low pass filter (LPF) 364.

The VCO 361 generates a local frequency, and the divider 362 divides the local frequency output from the VCO 361.

The reference frequency generator 365 generates a reference frequency, and the PC 365 generates a PC voltage by comparing the frequency output from the reference frequency oscillator 365 with the frequency output from the divider 362. Let's do it.

The LPF 364 controls the VCO 361 by filtering the PC voltage output from the PC 363.

The local frequency generated by the VCO 361 is divided by the divider 362 and compared with the reference frequency output from the reference frequency oscillator 365 at the PC 363 to generate a PC voltage.

The PC voltage output from the PC 363 is filtered by the LPF 364 and synchronized to generate a constant local frequency at the VCO 361. The VCO 361 is always constant at the mixer 32. Output the local frequency.

5 is a detailed configuration diagram of the detector 37 of FIG.

The detector 37 includes a resonant circuit 371 and a multiplexer 372 as shown in FIG.

The resonant circuit 371 detects only a carrier wave from the signal output from the limiter 935, and the fraud multiplexer 372 mixes the carrier using the carrier wave of the resonant circuit 371 to detect the original facsimile signal and the amplification unit ( 38).

As a signal output from the limiter 35, a carrier wave is detected in the resonant circuit 371, and the detected carrier wave is mixed in the multiplexer 372 and detected as an original facsimile signal. Is output.

6 is a flowchart showing the operation of the facsimile recording apparatus according to the present invention. First, the transmission source is scanned, converted into an electrical signal, and then modulated and transmitted (400, 401, 402, 403).

In operation 404, the transmission unit 13 searches whether the switching is completed.

When the search result is not switched and the transmission signal is printed, the transmitted electrical signal is converted into optical energy, printed, and then terminated (405 and 406).

In addition, when the switching of the search results is completed and the transmission signal is output to the VCR, the switching unit 21 detects whether the switching is completed (407 and 408).

When the search result does not complete switching and outputs the TV broadcast signal to the VCR, the broadcast signal is received by the antenna and displayed on a monitor or recorded on a video tape (409, 410).

In addition, when the search result switching is completed and the signal transmitted to the facsimile is output to the VCR, the signal is separated into a Y / C signal, recorded on a video tape, and displayed on the monitor (411, 412).

The present invention, which is configured and operated as described above, can store the signal transmitted by the facsimile using a video tape, thereby enabling permanent preservation and displaying on the lower surface of the TV.

Claims (3)

A facsimile recording apparatus using a VCR comprising a facsimile for receiving an electrical signal through a transmission path and a VCR for recording an image signal based on the electric signal received by the facsimile on a tape, the facsimile recording apparatus outputting the RF output signal output from the facsimile. RF amplifying means for amplifying a predetermined level or more, local frequency generating means and generating means for generating a predetermined focal frequency, the amplified RF amplifying means, local frequency generating means for generating a predetermined local frequency, and the local frequency. Mixing means for mixing the amplified RF output signal and converting the converted RF output signal into an IF output signal, IF amplifying means for amplifying the converted output IF signal by a predetermined level or more, and noise contained in the amplified IF output signal. Filter and limiter means for removing; detection and amplifying means for detecting and amplifying the IF output signal from which the noise is removed; And an interface means having conversion means for repeatedly outputting the output signal of the detection and amplification means into a plurality of fields. 2. The apparatus of claim 1, wherein the local frequency generating means comprises: a voltage control oscillator (VCO) for generating a frequency and outputting it to the mixing means, a divider for dividing a signal output from the VCO, and a reference frequency generating means for generating a reference frequency; A PCP for generating a PC voltage by comparing the frequencies of the signals output from the reference frequency generating means and the frequency dividing means, and an LPF (Low Pass) for filtering a signal output to the PC means and outputting a signal controlled by the VCO. A facsimile recording device using a VCR, characterized in that consisting of a filter). 2. The apparatus according to claim 1, wherein the detection means detects an original facsimile signal using known means for detecting a carrier wave from a signal output from the limiter means, and a carrier wave output from the resonator means and outputs the multiplexing means to the amplification means. A facsimile recording apparatus using a VCR, characterized in that it is configured by means.