JP2943230B2 - Synchronous recording device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synchronous recording apparatus for controlling recording start and stop of a recording device such as a tape recorder by an external control signal.

2. Description of the Related Art In recent years, when a music signal from a player such as a compact disc player is recorded on a recording device such as a tape recorder, a synchronous recording device that starts and stops recording of the recording device in synchronization with playback and stop of the player is often used. It has come to be.

Hereinafter, an example of a conventional synchronous recording device will be described with reference to the drawings. FIG. 3 shows a main part of a conventional synchronous recording apparatus. In FIG. 3, reference numeral 11 denotes a signal recording unit, which is composed of a recording medium and its drive system. In this example, a magnetic tape is used as a recording medium. It comprises a running tape running system, a recording head provided in the tape running system, a recording amplifier circuit for supplying a recording current to the recording head, and the like. Reference numeral 12 denotes a recording control unit, which outputs a control signal for controlling an operation state of the signal recording unit 11 such as recording standby / running / stopping. A recording signal input terminal 13 supplies a recording signal to the signal recording unit 11. 14 is a stop switch, 15 is a running switch, and 16 is a recording switch, each of which is opened and closed by a stop button, a running button, and a recording button provided on a console, one end is grounded, and the other end is the recording control unit 12.
Has been entered. Reference numeral 17 denotes a first NAND unit which receives an output signal which becomes "H" when the signal recording unit 11 from the recording control unit 12 is in a recording standby state and a signal from a recording start signal input terminal 5 described later. The output is connected to the cathode of a diode 20 described later. Reference numeral 18 denotes a resistor, and 19 denotes a recording display light emitting diode. These are connected in series, and an output signal output from the recording control unit and set to “H” when the signal recording unit is in a recording standby state or during a recording operation. The recording display light emitting diode 19 is connected between the ground and the ground so as to be in the forward direction. Reference numeral 20 denotes a diode, and the anode is connected to the other end of the traveling switch 15. Reference numeral 1 denotes a recording unit, which is the signal recording unit 11, the recording control unit 12, and the recording signal input terminal.
13, the stop switch 14, the traveling switch 15, the recording switch 16, the first NAND unit 17, the resistor 18, the recording display light emitting diode 19, and the diode 20. Reference numeral 5 denotes a recording start signal input terminal, which is connected to a positive logic output of a first monostable multivibrator 7 described later. Reference numeral 6 denotes a recording stop signal input terminal, which is connected to a negative logic output of a second monostable multivibrator 8 described later and to the other end of the stop switch 14. Reference numeral 7 denotes a first monostable multivibrator, to which a signal from a synchronization signal input terminal 10 described later is input via a first inverter 9 described later. Reference numeral 8 denotes a second monostable multivibrator to which a signal from a synchronization signal input terminal 10 described later is input. 9 is a first inverter, and 10 is a synchronization signal input terminal.

The operation of the synchronous recording device configured as described above will be described below.

When the recording button is pressed from the console, the recording switch 16 is closed, the recording control unit 12 is set to the recording standby mode, and the recording control unit 12 drives the signal recording unit 11 to the recording standby state. Signal recording unit 11
Is in a recording standby state, a music signal from a player such as a compact disc player is input from a recording signal input terminal 13, amplified and processed by a recording amplifier circuit of the signal recording unit 11, and then input to a recording head. When the traveling button is pressed from the console in this state, the traveling switch 15 is closed, and the recording control unit 12 is set to the recording traveling mode. When the recording control unit 12 is in the recording traveling mode, the recording control unit 12 drives the tape traveling system of the signal recording unit 11 to a traveling state, and the music signal input to the recording head of the signal recording unit 11 in the recording standby state is The signal is recorded on the magnetic tape, and the signal recording unit 11 enters a recording running state. When the signal recording unit 11 is in the recording standby state or the recording traveling state, when the stop button is pressed from the console, the stop switch 14 is closed, and the recording control unit 12 enters the stop mode. When the recording control unit 12 enters the stop mode, the signal recording unit 11 is driven to a stop state, the tape running system of the signal recording unit 11 and the recording amplification circuit are stopped, and the recording is stopped. When the signal recording unit 11 is in the recording standby state or the recording running state, the signal a of the recording control unit 12 in FIG. 3 outputs "high", so that the recording display light emitting diode 19 is driven in the forward direction. The current limited by the resistor 18 flows and emits light, indicating that the signal recording unit 11 is in the recording standby state or the recording traveling state. On the other hand, a synchronization signal input independently from the music signal from the player is input to the synchronization signal input terminal 10. This synchronization signal is a signal that is "low" when the player's running button is pressed and the player is in the running state, and is "high" when the player's stop button is pressed and the player is in the stopping state.
This synchronizing signal is inverted by the first inverter 9 to drive the first monostable multivibrator 7. The input of this first monostable multivibrator 7 is "low".
The output Q of the first monostable multivibrator 7 is output for a certain period of time from the moment when the player changes from the stopped state to the running state, in order to output “high” to the output Q for a fixed time from the moment when the player becomes “high”. Outputs “high”. On the other hand, the signal input to the first NAND unit 17 from the output b of the recording control unit 12 is a signal that becomes “high” when the signal recording unit 11 is in the recording standby state, and therefore, the first NAND unit 17 In response to the output Q of the first monostable multivibrator 7 input via the other input terminal 17, that is, the recording start input terminal 5, the first NAND unit 17 outputs a signal when the signal recording unit 11 is in a recording standby state. Only works as a valid switch. Therefore, when the signal recording unit 11 is in the recording standby state, when the player changes from the stop state to the running state, the first monostable multivibrator 7 becomes “high” for a certain period of time, and is inverted through the first NAND unit 17, Since the output of the first NAND unit 17 is "low" for a certain period of time, it is equivalent to closing the travel switch 15 via the diode 20, and the signal recording unit 11 enters the recording traveling state. At this time, when the player changes from the running state to the stopped state, the synchronization signal input terminal 10 changes from “low” to “high”.
The second configuration is similar to that of the monostable multivibrator 7 of FIG.
The output Q of the monostable multivibrator 8 is "high" for a certain period of time, but the output is "low" for a certain period of time because the output is the output whose logic is inverted from that of the output Q. The same signal is input to the control unit 12 as when the stop switch 14 is closed, and the signal recording unit 11 is stopped.

As described above, if the signal recording unit 11 is set to the recording standby state by pressing the recording button of the synchronous recording device, the player can be changed from the stop state to the running state by pressing the run button of an external compact disc player or the like. The signal recording unit 11 can be put into the recording running state in synchronization with the above, and then, by pressing the stop button of the player to put the player from the running state to the stop state, the signal recording unit 11 can be put into the stopped state synchronously, and the You can record the music signal of the player by simple operation.

SUMMARY OF THE INVENTION However, in the above-described configuration, from the recording standby state, press the run button on the console of the synchronous recording apparatus to set the recording run state, and then press the external player's run button to run the player from the stop state. When the player is stopped again by pressing the stop button of the player after the state, there is a problem that the synchronous recording device is stopped by the synchronization signal.

Generally, the compact disk player device, the radio receiving device, the recording device, the amplifying device and the like are housed in independent housings, and the music signals of the compact disk device and the radio receiving device are installed in the same housing as the amplifying device. Since the input signal is switched by the input signal switching unit and amplified by the amplification unit to drive the speaker, and is switched by the recording signal switching unit and supplied to the recording device, for example, the recording signal switching unit installed in the amplification device When the speaker is driven by switching the input signal switching unit installed in the amplifier to the compact disc player while recording the signal from the radio When the player presses the run button and presses the stop button after playing, the radio Of the signal from the recording will be will be stopped. Therefore, conventionally, a synchronizing signal switching unit interlocked with the recording signal switching unit is provided in the housing of the amplifying device, and only the synchronizing signal from the signal source device selected by the recording signal switching unit is supplied to the synchronizing signal input terminal of the synchronous recording device. Although an amplifying device is specially provided with a synchronizing signal switching unit in this case, when the amplifying device is combined with an amplifying device having no synchronizing signal switching unit, the above-described problem occurs. There was a drawback that could not be resolved.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a synchronous recording apparatus that is inexpensive and does not accept a synchronous recording stop signal when synchronous recording is not being performed.

Means for Solving the Problems In order to solve the above problems, a synchronous recording apparatus of the present invention has a storage unit for storing that a recording unit has started recording by a control signal input from a recording start signal end, and an output of the storage unit. And a control signal from a recording stop signal end is input to the recording unit via the switch unit.

Operation The present invention, according to the above-described configuration, starts the recording of the recording unit,
When the control is performed by the control signal from the recording start signal input terminal, it is stored in the storage unit, and the switch unit is closed by the output thereof, and the signal from the recording stop signal input terminal can be input to the recording unit. If the recording of the recording unit is started by the run button on the console, it will not be stored in the storage unit, so the output will open the switch unit and the control signal from the recording stop signal input terminal will be input to the recording unit. not,
It is possible to prevent the recording from being stopped by mistake.

Embodiment A synchronous recording apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a main part of a synchronous recording apparatus according to a first embodiment of the present invention. In FIG. 1, 11 is a signal recording unit, 12 is a recording control unit, 13 is a recording signal input terminal, 14 is a stop switch, 15 is a running switch, 16 is a recording switch, 17 is a first NAND unit, 18 is a resistor, 19 is a recording display light emitting diode,
20 is a diode, 1 is a recording unit, 5 is a recording start signal input terminal, 7 is a first monostable multivibrator, 8 is a second monostable multivibrator, 9 is a first inverter,
Reference numeral 10 denotes a synchronization signal input terminal, which has the same configuration as the conventional example shown in FIG. Reference numeral 2 denotes an RS flip-flop unit, which is set at the rising edge of the S input terminal from “low” to “high” and reset at the rising edge of the R input terminal from “low” to “high”. Reference numeral 31 denotes a second inverter which inverts a signal at the output terminal a of the recording control unit 12, that is, a signal which becomes "high" when the signal recording unit 1 is in a recording running state or a recording standby state, and inverts the RS flip-flop. Part 2
Is supplied to the R input terminal. Reference numeral 32 denotes a third inverter which inverts the output signal of the first NAND unit 17 to generate the RS signal.
It is supplied to the S input terminal of the flip-flop unit 2. Reference numeral 4 denotes a second NAND unit, which inputs a positive logic output signal of the RS flip-flop unit 2 and a signal of a recording stop signal input terminal 6 described later, and outputs the signal to the other end of the stop switch 14.
Reference numeral 6 denotes a recording stop signal input terminal, which is connected to a positive logic output terminal of the second monostable multivibrator 8.

The operation of the synchronous recording device configured as described above will be described below. When the recording button is pressed from the console, the recording switch 16 is closed and input to the recording control unit 12, and the recording control unit 12 drives the signal recording unit 11 to a recording standby state. When the run button is pressed from the console in this state, the run switch 15 is closed and input to the recording control unit 12, and the recording control unit 12 is a signal recording unit
The music signal from the recording signal input terminal 13 is recorded on a magnetic tape by the signal recording unit 11. When the signal recording unit 11 is in the recording running state or the recording standby state, when the stop button is pressed from the console, the stop switch 14 is closed and input to the recording control unit 12, and the recording control unit 12 stops the signal recording unit 11. Drive to state. When the signal recording unit 11 is in the recording standby state or the recording running state, the recording control unit of FIG.
The output signal of 12a becomes "high", and the recording display light emitting diode 19 is driven in the forward direction through the resistor 18 to light up.
The above operation is the same as in the conventional example shown in FIG. Meanwhile, the third
A synchronization signal output from a compact disk player or the like having the same logic as that of the conventional example shown in FIG. 3 is input to a synchronization signal input terminal 10, and is inverted by a first inverter 9 like the conventional example shown in FIG. The output is input to the stable multivibrator 7, and the output becomes “high” for a certain time from the moment when the player changes from the stop state to the running state, and is input to the first NAND unit 17. Since the first NAND section operates as a switch which is effective only when the signal recording section 11 is in the recording standby state, as in the conventional example of FIG. 3, the first NAND section is constant from the moment when the player changes from the stop state to the running state. The output of the first monostable multivibrator 7, which is high for a time, is a signal recording section.
If 11 is in the recording standby state, the signal recording unit 11 is set to the recording and running state in order to pass / reverse the first NAND unit 17 and set the other end of the running switch 15 to “low” via the diode 20. . On the other hand, since the output of the first NAND unit 17 is inverted by the third inverter 32 and is input to the S input terminal of the RS flip-flop 2, when the output of the first NAND unit 17 becomes "low", the signal becomes S. The input terminal becomes “high” and RS flip-flop 2
Is set and the Q output goes "high". When the Q output of the RS flip-flop 2 becomes “high”, one end of the second NAND unit 4 becomes “high”. In this state, the second NAND unit 4 has another input terminal, that is, a recording stop signal input terminal 6. And input it to the other end of the stop switch 14. In this state, when the signal at the synchronizing signal input terminal 10 changes from "low" to "high", the output Q of the second monostable multivibrator 8 becomes "high" for a certain time, and is inverted by the second NAND unit 4. Then, the other end of the stop switch 14 is set to “Low” for a certain period of time, and the signal recording unit 11 is stopped. When the signal recording unit 11 is stopped, the output a of the recording control unit 12 becomes "low". This signal is inverted by the second inverter 31 and the R input terminal of the RS flip-flop unit 2 is set to "high". The RS flip-flop unit 2 is reset. When the RS flip-flop unit 2 is reset, the Q output becomes “low”, so that the second NAND
Since the unit 4 outputs “high” regardless of the other input terminals, it is not input to the other end of the stop switch 14 even if the synchronization stop signal input terminal 6 becomes “high”. When the signal recording unit 11 is switched from the stop state to the recording standby state, and then the traveling button is pressed from the console to enter the recording traveling state, the output of the first NAND unit 17 is not "low", so the RS flip-flop unit 2 remain reset, so the second NAND unit 4
Since the signal remains "high" irrespective of the logic of the recording stop signal input terminal 6, the signal recording unit 11 changes the player from the stop state to the running state during the recording run, and again stops the recording. Even if the recording stop signal is generated, the signal recording unit 11 can continue the recording running state. Thus, the second NAND unit 4 functions as a switch controlled by the output of the RS flip-flop unit 2. Here, the recording unit 1 is shifted to the stop state by the synchronous recording stop signal, but may shift to the recording standby state.

As described above, according to the present embodiment, the RS flip-flop unit 2 as a storage unit that stores that the recording unit 1 has started recording traveling by a signal from the recording start signal input terminal 5,
The second NA as a switch section closed by its output
By inputting a signal from a recording stop signal input terminal to the recording unit 1 via the ND unit 4, if a recording run is started by pressing the run button from the console, even if the recording stop signal is input, it will be erroneous. A synchronous recording device that does not stop recording traveling can be realized.

FIG. 2 is a view showing a main part of a synchronous recording apparatus according to a second embodiment of the present invention, and is a flow chart in the case where control of the synchronous recording apparatus is performed using a microcomputer. In FIG. 2, reference numeral 201 denotes a label indicating the start position of the program. When the power switch of the synchronous recording device is closed, the program starts from here. 202 is an initial process,
The processing indicated by the label 201 starts from the initial processing 202. Reference numeral 203 denotes operation switch reading processing. After the initial processing 202, here, the state of switches, such as a recording switch, a traveling switch, and a stop switch, input from the operation console is read. Reference numeral 204 denotes a determination as to whether or not the stop switch is ON. If the determination is true, the process branches to a stop process 209 described later. Reference numeral 205 denotes a determination as to whether or not the traveling switch is ON. If true, the process branches to a traveling process 211 described later. Reference numeral 206 denotes a determination as to whether or not the recording switch is ON. If the determination is true, the process branches to a recording standby process 212 described later. If the determination is false, the process branches to a determination 207 as to whether or not a synchronization signal falls, described later. Reference numeral 207 denotes a determination as to whether or not the synchronization signal is falling. If true, the process branches to a determination 213 as to whether or not to be in a recording standby state to be described later, and if false, the process branches to a determination 208 as to whether or not the synchronization signal is to be described later. I do. Reference numeral 208 denotes a determination as to whether or not the sync signal has risen. If true, the flow branches to determination 215 as to whether or not the synchronous recording flag is set, and if false, the flow branches to the operation switch reading process 203. Reference numeral 209 denotes a stop process. After the process, a synchronous recording flag reset process described later is performed. 210 is a synchronous recording flag resetting process, 211 is a running process, and 212 is a recording standby process. Reference numeral 213 denotes a determination as to whether or not the recording is in standby. If true, the process branches to a synchronous recording flag setting process 214 described later, and if false, the process branches to the operation switch reading process 203. Reference numeral 214 denotes a synchronous recording flag setting process, which branches to a running process 211 after the process. Reference numeral 215 denotes a determination as to whether or not the synchronous recording flag is set.
The process branches to operation switch reading processing 203 if false.

The operation of the synchronous recording apparatus having the microcomputer processed in the flowchart configured as described above will be described below. FIG. 2 is a flowchart of the recording control unit 12 and the first NAND of the synchronous recording apparatus according to the first embodiment of FIG.
Unit 17, a diode 20, a second inverter 31, a third inverter 32, an RS flip-flop unit 2, a second NAND unit 4, a first monostable multivibrator 7, a second monostable multivibrator 8, This is a case where the processing executed by the portion constituted by one inverter 9 is performed by a microcomputer. When the power of the synchronous recording device is turned on, the microcomputer starts processing from the power-on label 201, performs initial processing such as resetting each flag and initial setting of the signal recording unit in initial processing 202, and then performs operation switch reading processing 203 on the operation console. Reads each operation switch input from. When the recording button is pressed from the console, the judgment 206 of whether or not the recording switch is ON becomes true, and the signal recording unit is set to the recording standby state in the recording standby process 212. Pressing the run button from the console will determine whether the run switch is ON or not 20
Since 5 is true, the signal recording unit performs
The vehicle starts running and enters the recording running state. When the signal recording unit is in the recording standby state or the recording traveling state, pressing the stop button from the console causes the determination 204 as to whether or not the stop switch is ON to be true, and the signal recording unit is shifted to the stop state by the stop processing 209,
The synchronous recording flag is reset by the synchronous recording flag reset processing 210. On the other hand, the signal at the synchronization signal input terminal is
When the signal falls from "high" to "low", that is, when synchronous recording is started, the judgment 207 as to whether or not the synchronizing signal has fallen becomes true, and the judgment 213 as to whether or not recording standby is processed. At this time, if the signal recording unit is in the recording standby state, the determination 213 of whether or not the recording is in the recording standby state is true and the synchronous recording flag setting process 2
Run processing after the synchronous recording flag is set by 14
Step 211 is executed and the signal recording sound enters the recording running state. After this, the input signal at the synchronization signal input terminal changes from “low” to “high”.
Is satisfied, that is, when the synchronous recording stop signal is input, the determination 208 as to whether or not the synchronous signal rises is true, and the determination 215 as to whether or not the synchronous recording flag is set is executed. Here, when the signal recording unit is in the recording traveling state by the traveling switch, since the synchronous recording flag is not set, the determination 215 of whether or not the synchronous recording flag is set is false, and the operation switch reading process 203 is performed without doing anything. If the signal recording unit is in the recording running state due to the fall of the synchronization signal, the synchronous recording flag is set in the synchronous recording flag setting process 214, so it is determined whether or not the synchronous recording flag is set. 215 becomes true and the signal recording unit is stopped by the stop processing 209, and then the synchronous recording flag is reset by the synchronous recording flag reset processing 210. As described above, the determination 213 as to whether or not the recording is in standby is made according to the first embodiment of the first embodiment shown in FIG.
And the determination 215 as to whether or not the synchronous recording flag is set is an operation as a switch equivalent to the second NAND 4 in the first embodiment of FIG. , The synchronous recording flag is the RS of the first embodiment of FIG.
The operation as a storage unit equivalent to the flip-flop unit 2 is performed.

As described above, according to the present embodiment, the synchronous recording flag as a storage unit that stores that the signal recording unit has started recording traveling at the falling edge of the synchronous signal, and only when the synchronous recording flag is set , Judge whether or not the synchronizing signal rises 208
1 is provided as a switch unit to determine whether or not the synchronous recording flag is set to branch to the stop processing 209 when the processing is true, the same effect as the embodiment of FIG. When a recording start is started by pressing, a synchronous recording apparatus that does not erroneously stop recording even when a recording stop signal is input can be realized at very low cost.

Effect of the Invention As described above, the present invention includes a recording unit, a storage unit that stores that the recording unit has started recording by a synchronous recording start signal, and a switch unit that is closed by an output of the storage unit, wherein the switch By configuring to input a synchronous recording stop signal to the recording unit via the unit, if the recording start is performed other than the input of the synchronous recording start signal,
Even if a synchronous recording stop signal is input, the recording does not stop, and a synchronous recording device that does not stop recording accidentally can be provided.
Further, when the control is performed by a microcomputer, it can be realized at very low cost and is very useful in practice.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a main part of a synchronous recording apparatus according to a first embodiment of the present invention, FIG. 2 is a flowchart of control of the synchronous recording apparatus according to a second embodiment of the present invention, and FIG. 1 is a block diagram showing a synchronous recording device. 1 ... Recording unit, 2 ... RS flip-flop unit (storage unit), 4 ... Second NAND unit (switch unit), 5 ... Recording start signal input terminal, 6 ... Recording stop signal input terminal, 10 … Synchronous signal input terminal, 13… Recording signal input terminal, 14… Stop switch, 15… Run switch, 16… Record switch.

Claims (1)

(57) [Claims] 1. A recording section, a recording start signal input terminal for inputting a control signal for controlling the start of recording of the recording section, and that the recording section starts recording in response to a control signal input from the recording start signal input terminal. And a switch unit closed by an output of the storage unit, and a recording stop signal input terminal for inputting a control signal for controlling a recording stop of the recording unit via the switch unit. Features a synchronous recording device.