KR900005066B1 - Program reproducing circuit due to the signal source of broadcasting information - Google Patents

Abstract

The circuit for recording the desired program correctly by the program code provided form the broadcasting station includes a key matrix (10) selecting the channel, time mode etc., a tuner (30) selecting the channel, a horizontal synchronous signal reproducing circuit (40) selecting the synchronous bit and vertical synchronous signals from the output signal of the tuner a horizontal synchronous signal generator (50) selecting the vertical signal, an input signal converter (60) detecting the program code and converting it to digital data, and a central control unit (70) controlling a VTR mechanism control circuit (80) and an interface circuit (90) with the received data.

Description

Recording circuit of program by broadcasting information signal source

1 is a block diagram according to the present invention.

2A and 2B are detailed diagrams of operational waveforms and waveform diagrams of the respective parts of FIG.

3 is a flow chart of FIG.

* Explanation of symbols for main parts of the drawings

10: key matrix 20: display circuit

30: receiving circuit 40: vertical synchronization signal

50: horizontal synchronous signal generating circuit 60: input signal conversion circuit

70: central control device 80: instrument control circuit

90: circuit control interface circuit

The present invention relates to an automatic recording circuit of a video recording apparatus, and more particularly to an automatic recording circuit of a program by a broadcast information signal source.

In general, a video tape recorder (hereinafter, referred to as a VTR) records a video signal on a tape as a magnetic change.

First, a video camera is used to directly record an image of a subject, and second, a method of receiving and recording a television broadcast can be recorded by directly inputting a broadcast signal input to a television receiver into a VTR. In addition, the broadcast of the television has been informed of the program by day, week, month so that viewers can conveniently watch the program (Program). In particular, when transmitting a television broadcast from a purchase destination, a program code of a broadcasting information signal source is transmitted for each program, and the program code is notified to the viewer on a weekly basis. On the other hand, the VTR has a function of automatically recording a program to be viewed, such as a broadcast program of the above-mentioned television, and has a function of allowing a missed recording without a person. The recording circuit has set the start time and the end time of the program to be recorded by using a timer circuit as a timer to record automatically even when not in the absence. However, the automatic recording circuit has a problem in that it is not possible to record necessary information due to a change in broadcasting time or a temporary situation of a broadcasting station, and a problem in that it is impossible to record time on account of the unclear advertising time.

Accordingly, an object of the present invention is to provide a recording circuit of a program by a broadcast information signal source that accurately records only a program to be recorded using a specific code of a program transmitted from a broadcasting station.

It is another object of the present invention to provide a circuit capable of recording a desired program using a specific signal and a timer by a broadcast information signal source.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an automatic recording circuit of a program by a broadcast information signal source according to the present invention, in which a mode selection signal for a broadcast information signal source and a program for a program are selected while adjusting a time by selecting a time mode. A key matrix 10 for outputting a code signal as a pressing signal of a key, a display circuit 20 for displaying a selected mode by inputting a predetermined signal, and a receiving circuit for selecting a television channel and outputting a broadcast signal corresponding thereto; 30, a vertical synchronous signal reproducing circuit 40 for inputting a broadcast signal output from the receiving circuit 30 to output a synchronous bit signal and a vertical synchronous signal of a predetermined period, and outputting from the receiving circuit 30; A horizontal synchronization signal generation circuit 50 for inputting a broadcast signal to output a horizontal synchronization signal, and a broadcast information signal by inputting a broadcast signal of a channel output from the reception circuit 30; An input signal conversion circuit 60 for detecting a program code and outputting it as a digital signal, and inputting the key matrix 10, a vertical synchronous signal reproducing circuit 40, and a horizontal synchronous signal generating circuit 50; The central control device which inputs and compares each signal output from the signal conversion circuit 60, outputs a selection mode signal to the display circuit 20, and simultaneously outputs a predetermined instrument control signal and a circuit control signal. Unit = Micro-Computer (70) and the instrument control signal output from the central control unit 70 is input to drive for the operation of the loading motor (drum motor), drum motor (Drum Motor) and the captain motor, etc. A circuit control interface circuit for inputting a mechanical control circuit 80 for outputting a signal and a circuit control signal output from the central controller 70 to output an EE control signal, a recording signal, an audio mute signal, and the like. It consists of 90. In the configuration of FIG. 1, the instrument control circuit 80 outputs a driving signal according to the instrument control signal of the central controller 70 to control the driving of the deck loading motor, the drum motor, and the captain motor during recording or playback. This circuit is a conventional mechanical control circuit of the VTR. In addition, the circuit control interface circuit 90 outputs an EE control signal, a recording signal, an audio mute signal, or the like during recording or playback by the circuit control signal of the central control apparatus 70, and thus a predetermined video signal processing circuit and an audio signal. It is a conventional circuit control interface circuit of the VTR that controls the processing circuit.

FIG. 2 is an operation waveform diagram of each part of FIG. 1, and (A) shows a sync bit signal having a constant period [Delta] t (sec) as an output of the vertical sync signal regeneration circuit 40. As shown in FIG. Bb shows the vertical synchronous signal reproduced by the vertical synchronous signal reproducing circuit 40. (C) shows the horizontal synchronizing signal generated by the horizontal synchronizing signal generating circuit 50. (D) shows data of a broadcast program code as an output of the input signal conversion circuit 60. FIG. (A-D) of FIG. 2B is a detailed waveform diagram of (A-D) of FIG. 2A.

3 is a flow chart of FIG. The present invention will be described in detail based on the drawings and configurations described above. When the mode signal for the broadcast information and the code signal of the program for the program are selected and pressed in the key matrix 10 and input to the central control unit 70, the central control unit 70 enters the mode for the broadcast information signal source. A signal and a program code signal are output to the display circuit 20 to display the current recording mode and the selected program code and simultaneously store the input signal in the internal memory. Meanwhile, the reception circuit 30 detects a broadcast signal of the selected channel and outputs the broadcast signal to the vertical synchronous signal reproducing circuit 40, the horizontal synchronous signal generating circuit 50, and the input signal conversion circuit 60, respectively. At this time, the vertical synchronous signal reproducing circuit 40 inputting the broadcast signal of the selected channel output from the receiving circuit 30 outputs a sync bit signal having a predetermined period Δt (sec) as shown in FIG. The vertical synchronization signal is reproduced and output to the input terminals P1 and P2 of the central controller 70, respectively. In addition, the horizontal synchronizing signal generating circuit 50 inputs the broadcast signal selected and output from the above-mentioned receiving circuit 30 to generate a horizontal synchronizing signal as shown in FIG. 2c, and inputs it to the input terminal P3 of the central controller 70. Let's do it. On the other hand, the input signal conversion circuit 60 that inputs the broadcast signal output from the reception circuit 30 detects the mode signal of each program inputted superimposed on the broadcast signal source of each program, and then the digital data signal as shown in FIG. 2D. The data is inputted to the input terminal P4 of the central controller 70. At this time, the synchronous bit signal having a predetermined period (Δt) and horizontal output from the vertical synchronous signal reproducing circuit 40, the horizontal synchronous signal generating circuit 50 and the input signal conversion circuit 60 as shown in FIG. The central control unit 70, which inputs the vertical synchronization signal and the digital data of the broadcast program, checks the synchronization bit signal of a predetermined period Δt input to the input terminal P1, and the input signal is " high " Whenever the signal goes low, the signal input to the input terminal P2 is detected. That is, when the bit synchronization signal input at a predetermined period Δt as shown in FIG. 2a becomes "high" to "low", the signal input to the input terminal P2 is matched with the return time of the vertical synchronization signal as shown in FIG. 2b. Detect. In addition, when the vertical synchronization signal inputted to the input terminal P2 becomes "high" to "low", the central control unit 70 detects an input state of the horizontal synchronization signal inputted to the input terminal P3 as shown in FIG. 2C. do.

At this time, the central control unit 70 is a program of the broadcast information signal source input to the input terminal (P4) as many times as a predetermined number of horizontal synchronization signals input to the input terminal (P3) from "low" to "high" Read the code data value. That is, whenever the horizontal synchronous signal (waveform in FIG. 2C) changes from "low" to "high", program code data input as digital data is read and stored in the internal memory as shown in FIG. 2D. In addition, the synchronization bit signal having a predetermined period Δt as shown in FIG. 2a output from the vertical synchronization signal reproducing circuit 40 and input to the input terminal P1 of the central controller 70 is a signal having a predetermined predetermined period. Therefore, the central control unit 70 inputs the vertical synchronization signal and the horizontal synchronization signal respectively input to the input terminals P2 and P3 whenever the synchronization bit signal goes from "high" to "low" at a predetermined period Δt. The state is sensed and the program code data of the broadcast information signal source input to the input terminal P4 is periodically read at the same period as the bit synchronization signal period and stored in the internal memory. That is, when the synchronization bit signal as shown in FIG. 2A becomes "high" to "low" at a predetermined period Δt, the central control unit 70 checks the state of the input signal, thereby broadcasting the signal source. It is the input signal irradiation time to read the program code data. When the program code data read as described above is matched with the reserved program code data of the broadcasting information inputted from the key matrix 10 initially, it is determined that the current state is the recording state, and the instrument control signal and the circuit control signal are determined. Output to the instrument control circuit 80 and the circuit control interface circuit 90, respectively. At this time, if the program code data of the broadcast information signal source and the reserved program code data input from the key matrix 10 do not match, it is determined that the recording standby state and the recording standby state is maintained. Therefore, the instrument control circuit 80 which inputs the instrument control signal output when the program code inputted to the central controller 70 and the program code inputted from the key matrix 10 is matched, respectively, is a loading motor, a drum motor, and a cap. A drive signal for operating the stin motor and the like is output. In addition, the circuit control interface circuit 90 that inputs the circuit control signal outputs an EE control signal, a recording signal, and an audio mute signal that can be simultaneously interfaced with the circuit. Therefore, mechanical operation is performed and circuit operation is performed to start recording of a broadcast program. On the other hand, when the timer mode and the time adjustment signal are output as the pressure signal of the key in the key matrix 10 and input to the central controller 70, the central controller 70 stores the input signal to time the internal timer. At the same time as checking, the time initial setting signal is displayed on the display circuit 20.

At this time, the central controller 70 inputs the signals output from the above-described vertical synchronous signal reproducing circuit 40 and the horizontal synchronous signal generating circuit 50, and when the time specified by the key matrix 10 is reached, the input broadcast signal is input. It is output to the instrument control circuit 80 and the circuit control interface circuit 90 and is reserved by a timer as described above. On the other hand, when the time mode is selected in the key matrix 10 and the signal for adjusting the timer and the program mode and program code of the broadcasting information source are simultaneously output as the pressing signal of the key, the central control unit 70 outputs the two mode selection signals. The time and program code signals are output to the display circuit 20 for display. In addition, by using the internal timer, the programmed control time is checked so that when the scheduled time comes, the program code is checked every input signal irradiation time so that the recording can be performed when the program code matches the input time. And the circuit control interface circuit 90 output the instrument control signal and the circuit control signal, respectively, to perform video recording. That is, when the scheduled time comes, the program code of the broadcast signal source is examined and recording is performed when it matches the program code input from the key matrix 10. In the circuit of FIG. 1, which operates as described above, the operation in the reserved recording mode by the program code of the broadcast information signal source is as follows. In the reserved recording mode, the central control apparatus 70 of FIG. 1 determines whether a scheduled recording is currently being performed in step (1) of FIG. If it is not recording the program reserved in step (1), go to step (2) to check whether the input irradiation time. That is, it is checked whether the synchronization bit signal of the predetermined period Δt currently input to the input terminal P1 of the central control apparatus 70 is an input irradiation time of "high" to "low" as shown in FIG. 2a. If the input irradiation time has not been reached in step (2), the above process is repeated until the input irradiation time is reached by looping to step (1), and when the input irradiation time is reached, the process proceeds to step (3). The input state of the vertical synchronous signal and the horizontal synchronous signal such as 2a and b degrees input to the terminals P2 and P3 is sensed. In addition, whenever the predetermined number of horizontal synchronization signals change from " low " to " high ", the program code data of the broadcasting information signal source as shown in FIG. 2D inputted to the input terminal P4 is read and stored in the internal memory (4). Proceed to step. In step (4), it is determined whether the input program code data stored in the internal memory matches the reserved program code data, which is the reference data input by the key matrix 10 in advance, and if not, the reserved recording standby state is maintained. . If the input program code data and the reference data coincide with each other, it is judged as scheduled recording, and the flow proceeds to step (5) to output the instrument control signal to the instrument control circuit 80, and the circuit control signal to the circuit control interface circuit 90. To record and return the broadcast program. Therefore, the instrument control circuit 80 controls the operation of the video cassette deck that outputs drive signals for operating the loading motor, drum motor, capstin motor, and the like, and the circuit control interface circuit 90 outputs the recording signal for recording. It outputs to control a predetermined video signal processing circuit and an audio signal processing circuit to perform recording of a broadcast program. On the other hand, if it is in the state of recording the currently scheduled broadcast program in step (1) proceeds to step (6) to confirm the input irradiation time. At this time, the operation of checking whether the input irradiation time is the same as in the step (2). If it is not the input irradiation time in step (6), continue checking until the input irradiation time is reached, and when the input irradiation time is reached, proceed to step (7) and the vertical synchronization signal and the horizontal synchronization signal inputted to the input terminals P2 and P3. Detect and store the program code data of the broadcast information signal source input to the input terminal P4 and store it in the internal memory, and then proceed to step (8). In step (8), it is determined whether or not the reserved program code data, which is the reference data previously input by the key matrix 10, is identical to the input program code data stored in the memory. If the input program code data and the reserved program code data do not match in step (8), the process proceeds to step (9) to stop the recording. If the input program code data and the reserved program code data match in step (8), the recording state is maintained continuously.

As described above, the present invention can accurately record only the desired main program by using the program code of the broadcasting information signal source, not the time control, and at the same time prevent the recording of the time due to the change of the broadcasting time of the broadcasting station. There is an advantage to escape from the thing.

Claims (1)

A display circuit 20 for displaying an input reservation mode, a program code, and a time; an instrument control circuit 80 for inputting an instrument control signal to output a loading, drum, and capstin motor driving signal; and a circuit control signal. In a program recording circuit by a broadcast information signal source having a circuit control interface circuit (90) for outputting a recorded signal, a mode selection signal, a program code signal, a time mode, and all mechanical control signals for the broadcast information signal source are outputted. A key matrix 10 for outputting a key press signal, a reception circuit 30 for selecting a television broadcast channel and outputting it as a broadcast signal corresponding thereto, and being connected to the reception circuit 30, A vertical synchronous signal reproducing circuit 40 for inputting an output broadcast signal and outputting a synchronous bit signal and a vertical synchronous signal of a predetermined period, and connected to the receiving circuit 30 to receive the A horizontal synchronous signal generating circuit 50 for inputting a broadcast signal output from the circuit 30 to output a horizontal synchronous signal, and a signal connected to the receiving circuit 30 to be output from the receiving circuit 30 An input signal conversion circuit 60 for detecting a program code of a broadcast information signal source and outputting it as digital data; a program code of the broadcast information signal source input by the key matrix 10 and the vertical synchronous signal reproduction circuit 40; And input the data of the synchronization signal and the program code output from the horizontal synchronous signal generation circuit 50 and the input signal conversion circuit 60, respectively, and compare the instrument control signal and the circuit control signal according to the reserved program code signal. And a central control unit 70 which outputs to the instrument control circuit 80 and the circuit control interface circuit 90 for recording. Program recording circuit.

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