JPS63282961A - Adding device for tape recorder - Google Patents

Abstract

PURPOSE:To effectively use a tape recorded without making complicated circuit constitution by adding a voice operating function, a pre-recording function and a repeating function. CONSTITUTION:When a voice operating means is added to a tape recorded 30, the recorded 30, the recorded 30 is automatically recorded in accordance with a sound signal input, the sound signal is delayed only by a prescribed period with a semiconductor memory 4, supplied to the recorder 30 and recorded without truncating. When a pre-recording means is added to the recorded 30, the sound signal is recorded only by the prescribed period retroactively and a pre-recording function is displayed in the input condition of the sound signal at the time of operating a pre-recording switch 10. Further, when a repeating means is added, the reproducing signal of the prescribed period before the stoppage is repeatedly reproduced from the memory 4 and the repeating function is displayed at the time of stopping the reproduction of the recorder 30.

Description

[Detailed description of the invention] The present invention will be explained in the following order.

A. Field of industrial application B. Overview of the invention C. Prior art D. Problem to be solved by the invention E. Means for solving the problem (Fig. 1) F. Effect G. Example G1 First example G2 No. Embodiment 2 H Effect of the Invention A Industrial Application Field The present invention relates to an additional device for a tape recorder constructed using a semiconductor memory.

B. Summary of the Invention The present invention makes the tape recorder more effective by making it possible to perform the voice operating function, pre-recording function, repeat function, etc. in an additional device of the tape recorder configured using semiconductor memory. It is designed to be used for.

C. Prior Art Conventionally, tape recorders have been proposed that have a voice operating function that automatically enters a recording state when an audio signal is input and records the audio signal.

Conventionally, when a pre-recording switch is operated while an audio signal is being input to a tape recorder, the recording state is entered and the audio signal is recorded backwards for a predetermined period of time, ensuring that the necessary audio signal is recorded. A device with a pre-recording function has been proposed.

Furthermore, conventionally, tape recorders having a repeat function that can repeatedly reproduce a predetermined period of a reproduction signal have been proposed.

D Problems to be Solved by the Invention In such conventional tape recorders, means for performing each function are built into the main body.
Therefore, tape recorders that do not have this means cannot provide such a function. Further, in conventional tape recorders having a voice operating function, for example, the audio signal at the start-up portion of the tape recorder's motor is muted and not recorded, resulting in so-called truncations.

Further, conventional tape recorders having a pre-recording function have disadvantages such as being complicated in structure and expensive.

The present invention takes these points into consideration and proposes an additional device that is simple in construction and inexpensive, and which, when added to a tape recorder, can effectively perform voice operating functions, pre-recording functions, and repeat functions.

E. Means for Solving the Problems The present invention provides an audio recording/reproducing circuit using, for example, a semiconductor memo (January 4), and a tape recorder (30) that enters a recording operation state when an audio signal is input. , the voice operating means supplies the audio signal to the tape recorder (30) with a delay of a predetermined period via the semiconductor memo (January 4), or the pre-recording function/notch (10) operates while the audio signal is being input. When the tape recorder (30) is in a recording operation state, the pre-recording means or tape recorder supplies the audio signal to the tape recorder (30) with a delay of a predetermined period via the semiconductor memo (January 4). (30) records the audio signal played back in the semiconductor memory (4), and when the playback of the tape recorder (30) is stopped, the semiconductor memo 1
4) repeating means for sequentially and repeatedly reproducing reproduction signals for a predetermined period.

F Function In the above-described configuration, if a device equipped with voice operating means is added to the tape recorder (30), when an audio signal is input, the tape recorder (30)
0) is automatically put into the recording state, the audio signal is recorded, and the voice operating function is performed. In this case, the audio signal is delayed by a predetermined period in the semiconductor memory (4) and then supplied to the tape recorder (30), so that it is recorded without interruption.

In addition, when a tape recorder (30) is equipped with a pre-recording means, the pre-recording switch (10)
) is operated, the tape recorder (30) is put into a recording state and the semiconductor memory (4) records the audio signal delayed by a predetermined period. In other words, the audio signal is recorded retroactively for a predetermined period of time, thereby providing a pre-recording function.

Also, tape recorders (3) are equipped with repeat means.
0), the tape recorder (3
When the reproduction of the semiconductor memo 0) is stopped, the reproduction signal of the predetermined period before the stop is repeatedly reproduced from the semiconductor memo January 4), thereby exhibiting a repeat function.

G Example G1 First Example (FIGS. 1 and 2) First, a first example of the present invention will be described with reference to FIGS. 1 and 2. This example is an example having voice operating means and pre-recording means.

In FIG. 1, (30) is a tape recorder; (30) is a tape recorder;
31) is a remote terminal, and (32) is a microphone terminal.

In this case, the tape recorder (30) has a remote terminal (
31) when a low level “0” signal is supplied to
The tape drive motor is in a recording pause state where the rotation is stopped, and when a high level "1" signal is supplied to the remote terminal (31), the tape drive motor starts rotating and the tape running speed is set to a predetermined value. Then recording will start.

Further, (40) is an additional device, (1) is a microphone, (41) is an operator for selecting a voice operating function and a pre-recording function, and (42) is a pre-record button.

This additional device (40) is constructed as shown in FIG. In the same figure, (1) is a microphone, and the audio signal output from this microphone (1) is sent to a RAM as a semiconductor memory via an amplifier (2) and an A/D conversion section of a conversion circuit (3). (Supplied to 41 as a write signal.

Further, the signal read from RAM+41 is sent to the tape recorder (30) via the D/A converter of the converter circuit (3).
) is supplied to the microphone terminal (32).

Further, (5) is a clock oscillator, and the clock CLK output from this clock oscillator (5) is supplied to the address controller (6). And (7) is a changeover switch for changing the frequency of the clock CLK output from the clock oscillator (5). That is, the fixed terminal on the V side of the changeover switch (7) is connected to the clock oscillator (5).
The fixed terminal on the P side is electrically floating, and the movable terminal is grounded.

When the aforementioned operator (41) is set to the VOR position and the voice operating function is selected, the selector switch (7) is connected to the V side and the frequency of the clock CLK output from the clock oscillator (5) is fv. It is said that On the other hand, when the operator (41) is set to the P or REC position and the pre-recording function is selected, the selector switch (7)
The frequency of the clock CLK connected to the P side and output from the clock oscillator (5) is set to fP, which is lower than fv.

Further, the conversion circuit (3) and RAM (4) are controlled by the address controller (6), and the clock CLK
At this timing, signals are sequentially written to predetermined locations in the RAM f4) according to instructions from the address controller (6), and in parallel, signals are sequentially read from the predetermined locations. In this case, the read address is always separated by a certain value from the write address, and the read address is controlled to be delayed by a predetermined period of time than the write address. This predetermined time is determined by the difference between the read address and the write address and the frequency of the clock CLK. T1 (e.g. several 100 m5ec), while when the pre-recording function is selected,
This is the total time of the time T2 (for example, several seconds) from the time when one wishes to record until the pre-record button (42) is pressed, and the rise time T1.

Further, the output signal of the microphone (1) is supplied to a waveform shaping circuit (8) via an amplifier (2). This waveform shaping circuit (8) outputs a high level "1" signal when the microphone ill outputs an audio signal of a certain level or higher, and otherwise outputs a low level "0" signal. . The output signal of this waveform shaping circuit (8) is supplied to the V side fixed terminal of the changeover switch (9).

Also, (10) is a pre-recording switch,
When the pre-record button (42) mentioned above is pressed, it is turned on, and when the press is released, it is automatically turned off. This pre-recording switch (10) is connected in series with, for example, a resistor (11), and this series circuit is connected between power terminal B and ground, and the pre-recording switch (10) and resistor (11) are connected in series.
The signal obtained at the connection point of the flip-flop (11)
2) is supplied to the trigger terminal. In this case, each time the pre-recording switch (10) is turned on, a high level "1" signal is supplied to the trigger terminal (12) of the flip-flop (12).
)'s output signal power 5 is inverted. This flip-flop (
The output signal of 12) is supplied to the P-side fixed terminal of the changeover switch (9).

The changeover switch (9) has the above-mentioned operator (41) set to VO.
When the voice operating function is selected in the R position, it is connected to the V side, while the operator (41) is in the P,
When the pre-recording function is selected in the REC position, it is connected to the P side. This changeover switch (9)
The output signal is sent to the remote terminal (30) of the tape recorder (30).
31) as a pause control signal.

This example is configured as described above, and the user connects the additional device (4
When the voice operating function is selected with the operator (41) of 0) set to the VOR position, the selector switch (7) is connected to the V side, and the frequency of the clock CLK output from the clock oscillator (5) becomes fv. . Therefore, R
The reading of A M (41 is delayed by a predetermined time T1 with respect to the writing).

Further, the changeover switch (9) is also connected to the V side. In this state, when audio is input to the microphone (1) and the audio signal is output from the microphone (1) at time t1 as shown in FIG. 3A, the waveform shaping circuit (8) The output signal is output at time t, as shown in FIG. 3B.
1, it changes from a low level "0" to a high level "1".

Therefore, at this time t1, a high level "1" signal is supplied to the remote terminal (31) of the tape recorder (30) as a pause control signal, so the tape recorder (30)
) is released, and the tape drive motor starts rotating. Then, as shown in FIG. 3C, the tape running speed reaches a predetermined value at time t2, which is a predetermined time T1 after this time t1, and recording is started in the tape recorder (30). On the other hand, the audio signal output from the microphone (1) is sent to the A/D of the amplifier (2) and conversion circuit (3).
The signal is supplied to the RAM (41) through the converter and sequentially written to a predetermined location, and is sequentially read out with a delay of a predetermined time T1.Then, the signal read from this RAM (4) is sent to the D of the converter (3). The signal is supplied to the microphone terminal (32) of the tape recorder (30) via the /A converter.Therefore, in the tape recorder (30),
The audio signal outputted from the microphone fil from time t1 is sequentially recorded from time t2 as shown in the third diagram.

Furthermore, when the audio signal is no longer input to the microphone (11), the output signal of the waveform shaping circuit (8) changes from the high level "1" to the low level "0", and the tape recorder (
30) is again in a pause state.

Also, when the user selects the pre-recording function by setting the operator (41) of the additional device (40) to the P and REC positions, the selector switch (7) is connected to the P side and the clock oscillator (5) outputs The frequency of the clock CLK is fP. Therefore, the reading of RAM f4) is delayed by the predetermined time TI+T2 with respect to the writing. Further, the changeover switch (9) is also connected to the P side. In addition, the output signal of the flip-flop (12) is first set to a low level "0", and then the tape recorder (30)
is placed in a pause state.

In this state, audio is input to the microphone (1), and the audio signal is output from the microphone (1) as shown in Figure 4A, and if the user wishes to record after time t3, Then, when the pre-record button (42) is pressed at time t4 after a predetermined time T2, the pre-record switch (10) is turned on, and the output signal of the flip-flop (12) changes at time t4 as shown in FIG. 4B. It goes from a low level "0" to a high level "1". Therefore, at this time t4, a high level "1" signal is supplied to the remote terminal (31) of the tape recorder (30) as a pause control signal, so the tape recorder (30)
The pause state of step 0) is released, and the tape drive motor starts rotating. Then, as shown in FIG. 4C, at time t5, which is a predetermined time T1 after time t4, the tape running speed reaches a predetermined value, and recording is started in the tape recorder (30). On the other hand, the audio signal output from the microphone (11) is output from the amplifier (2) and the conversion circuit (3).
The signals are supplied to the RAM (4) via the D converter, sequentially written to predetermined locations, and sequentially read out with a delay of a predetermined time T1+T2. The signal read out from the RAM (41) is then supplied to the microphone terminal (32) of the tape recorder (30) via the D/A conversion section of the conversion circuit (3).

Therefore, in the tape recorder (30), among the audio signals output from the microphone tl), those after time t3 are sequentially recorded from time t5, as shown in the fourth diagram.

Also, when the user subsequently presses the BRIB record button (42), the output signal of the flip-flop (12) will be at a high level "
1” to low level “0”, and the tape recorder (3
0) returns to the pause state.

In this example, the read delay time of RAM f41 is set to Ti + T2, but by making it longer than this, it is possible to record data from before time t3.

As described above, the additional device (40) of this example exhibits the voice operating function and the pre-recording function by being added to the tape recorder (30), so that the tape recorder (30) can be used more effectively. It becomes possible to do so. Also, since the audio signal is supplied to the tape recorder (30) via the RAM (41) with a delay of a predetermined time, when the voice operating function is activated,
There is no possibility of the head being cut off. In addition, additional equipment (4
0) is configured using the RAM (4), so the configuration is simple and can be configured at low cost.

G2 Second Embodiment (FIGS. 5 and 6) Next, referring to FIGS. 5 and 6, the second embodiment of the present invention will be explained.
An example will be described. This example is an example having repeat means. In FIGS. 5 and 6, parts corresponding to those in FIGS. 1 and 2 are designated by the same reference numerals.

In FIG. 5, (30) is a tape recorder, and (30) is a tape recorder;
31) is a remote terminal, and (33) is an earphone terminal. In this case, when a low level "0" signal is supplied to the remote terminal (31), the tape recorder (30) is placed in a playback pause state in which the rotation of the tape drive motor is stopped; When a high level "1" signal is supplied to the tape drive motor, rotation of the tape drive motor is started, and when the tape running speed reaches a predetermined value, reproduction is started.

Further, (40) is an additional device, (13) is a speaker, (43) is an operator for placing the tape recorder (30) in a pause state, and (44) is an operator for selecting a repeat period.

This additional device (40) is constructed as shown in FIG. In the figure, the audio signal obtained from the earphone terminal (33) of the tape recorder (30) is transmitted to the conversion circuit (3).
RAM as a semiconductor memory via the A/D converter of
(Supplied as a write signal to RA 41.
The signal read from M (4) is sent to the speaker (1) via the D/A converter of the converter circuit (3) and the amplifier (14).
3).

Further, (5) is a clock oscillator, and the clock CLK output from this clock oscillator (5) is supplied to the address controller (6). And (15) is
This is a changeover switch for changing the frequency of the clock CLK output from the clock oscillator (5). That is, the fixed terminal on the A side of the changeover switch (15) is connected to the control terminal of the clock oscillator (5), the fixed terminal on the B side is electrically floating, and the movable terminal is grounded. . When the above-mentioned operator (44) is in the TA position, the changeover switch (15) is connected to the A side and outputs the clock CL from the clock oscillator (5).
The frequency of K is set to fl. On the other hand, the operator (44) is
When the switch is in position B, the selector switch (15) is connected to the B side, and the frequency of the clock CLK output from the clock oscillator (5) is set to f2, which is half of fl.

Further, the conversion circuit (3) and RAM (41) are controlled by the address controller (6). When the above-mentioned operator (43) is set to the OFF position and paused, the RAM (41) is controlled by the address controller (6) at the timing of the clock CLK.
(Signals are sequentially written to the predetermined locations of 41, and in parallel, signals are sequentially read from the predetermined locations. In this case, reading is performed in the first half of the cycle of the clock CLK, and writing is performed to the same location in the second half. .This RA
Recordable time of audio signals to M+41 (recording capacity)
To is determined by the frequency of the clock CLK, and when the changeover switch (15) is connected to the A side, TA,
For example, it is set to 4 seconds, and when connected to the B side, it is set to TB, for example, 8 seconds. Then, the operator (
43) is set to the PAUSE ON position and is set to a read-only state.

Further, (16) is a pause switch, which is turned on when the above-mentioned operator (43) is in the OFF position and pause is turned off, and the operator (43) is in the PAUS position.
E It is configured to be in the off state when the position is set to ON and the pause is turned on. This pause switch (16
) is connected in series with, for example, a resistor (17), this series circuit is connected between power terminal B and ground, and the signal obtained at the connection point of the pause switch (16) and resistor (17) is transmitted to the tape recorder ( 30) is supplied to the remote terminal (31) as a pause control signal.

This example is configured as described above, and the operator (43) is turned off.
When the pause switch (16) is in the on position, the remote terminal (31) of the tape recorder (30) is turned on.
Since a signal of high level "1" is supplied as a pause control signal to the tape recorder (30), the tape recorder (30) enters the playback state. Then, as shown in Figure 7A, a tape recorder (3
The audio signal obtained from the earphone terminal (33) of 0) is supplied to RAM 41 via the amplifier (2) and the A/D converter of the conversion circuit (3), where it is sequentially written to a predetermined location and read out sequentially. Then, RAM f4
The signal read out from the converter circuit (3) is supplied to the speaker (13) via the D/A converter section of the converter circuit (3) and the amplifier (14), and reproduced sound is generated from the speaker (13). In this state, when the user sets the operator (43) to the PAllSE ON position at time t7, the pause switch (16) is turned off, and the remote terminal (31) of the tape recorder (30) is connected to the seventh As shown in FIG. B, since a low level "0" signal is supplied as the pause control signal, the tape recorder (30) enters a pause state. Further, RAM f4] is placed in a read-only state at this time t7. Therefore, from time t7, as shown in FIG. D/A
The signal is supplied to the speaker (13) via the converter and the amplifier (14), and the speaker (13) repeatedly generates audio for a predetermined period To before the pause. In this case, when the user moves the operator (44) to the TA position, the predetermined time T
o is TA, for example 4 seconds, while the operator (44)
When is the position of TB, the predetermined time To is TB, for example, 8
sec.

Further, when the user subsequently sets the operator (43) to the OFF position, the tape recorder (30) is released from the pause state and returns to the playback state as described above, and the earphone terminal (30) of the tape recorder (30) is The audio signal obtained in 33) is recorded and reproduced in RAM (4).

In addition, the remote switch (61) is attached to the additional device (40).
Connect the headphones (60) and press the controls (43).
It can also be configured so that it can be operated using a remote switch (61) instead.

A (62) is a remote plug, and (63) is an audio signal plug.

As described above, the additional device (40) of this example exhibits a repeat function by being added to the tape recorder (30), so that the tape recorder (30) can be used more effectively. Become.

Although the above-mentioned embodiments show those having a voice operating means and a pre-recording means, and those having only a repeating means, it goes without saying that other combinations can be constructed in the same way.

Further, in the above embodiment, the tape recorder (30)
An example of a device equipped with a remote terminal (31) is shown in FIG.
When attached to a tape recorder without a remote terminal, the same operation can be performed by configuring the tape recorder to turn on and off the power supply of the tape recorder using the signal supplied to the remote terminal (31) of the above embodiment. .

Effects of the Invention According to the invention described above, when added to a tape recorder, the voice operating function, pre-recording function, repeat function, etc. are exhibited, so that the tape recorder can be used more effectively. becomes.

Furthermore, since the audio signal is supplied to the tape recorder with a delay of a predetermined time via the semiconductor memory during the voice operating function, there is no possibility that the beginning of the audio signal will be cut off.

Furthermore, since the present invention is configured using a semiconductor memory,
The configuration is simple and can be configured at low cost.

[Brief explanation of drawings]

1 and 2 are block diagrams showing one embodiment of the present invention, FIGS. 3 and 4 are diagrams for explaining the same, and FIGS. 5 and 6 are diagrams showing other embodiments of the present invention, respectively. FIG. 7 is a diagram for explaining the configuration of the embodiment. (1) is a microphone, (3) is a conversion circuit, (4) is R
A.M. (5) Hack clock oscillator, (6) address controller, (71f91 and (15) changeover switch, (8)
is a waveform shaping circuit, (10) is a pre-recording switch, (12) is a flip-flop, (13) is a speaker, (30) is a tape recorder, (31) is a remote terminal, (32) is a microphone terminal, (33) is the earphone terminal, (
40) is an additional device, (41) (43) and (44)
(42) is a pre-record button.

Claims (1)

[Claims] 1. An audio recording/reproducing circuit using a semiconductor memory, which sets a tape recorder to a recording state when an audio signal is input, and delays the audio signal by a predetermined period of time via the semiconductor memory. When the pre-recording switch is operated while the voice operating means or the audio signal is being input to the tape recorder,
Pre-recording means puts the tape recorder into a recording state and supplies the audio signal to the tape recorder after a predetermined period of delay via the semiconductor memory, or the audio signal to be reproduced by the tape recorder is sent to the semiconductor memory. 1. An additional device for a tape recorder, comprising repeat means for sequentially and repeatedly reproducing a predetermined period of reproduction signals from the semiconductor memory when reproduction of the tape recorder is stopped. 2. An audio recording and reproducing circuit using a semiconductor memory, which when an audio signal is input, puts the tape recorder in a recording state and delays the audio signal by a predetermined period via the semiconductor memory to the tape recorder. voice operating means for supplying voice operating means; when a pre-recording switch is operated while an audio signal is being input, the tape recorder is placed in a recording state, and the audio signal is delayed for a predetermined period of time via the semiconductor memory; An additional device for a tape recorder, comprising: pre-recording means for supplying the tape recorder; and means for switching between the voice operating means and the pre-recording means. 3. An audio recording and reproducing circuit using a semiconductor memory, when an audio signal is input, puts the tape recorder in a recording state, and delays the audio signal for a predetermined period of time via the semiconductor memory to the tape recorder. When the pre-recording switch is operated with the voice operating means supplied or the audio signal being input,
a pre-recording means for setting the tape recorder in a recording state and supplying the audio signal to the tape recorder via the semiconductor memory with a delay of a predetermined period; repeat means for sequentially and repeatedly reproducing a predetermined period of playback signals from the semiconductor memory when playback of the tape recorder is stopped; and voice operating means or pre-recording means, and repeat means switching means. An additional device for a tape recorder comprising: 4. An audio recording and reproducing circuit using a semiconductor memory, which when an audio signal is input, puts the tape recorder in a recording state and delays the audio signal by a predetermined period via the semiconductor memory to the tape recorder. voice operating means for supplying voice operating means; when a pre-recording switch is operated while an audio signal is being input, the tape recorder is placed in a recording state, and the audio signal is delayed for a predetermined period of time via the semiconductor memory; Pre-recording means for supplying the tape recorder to the tape recorder; and recording the audio signal reproduced by the tape recorder in the semiconductor memory, and sequentially transmitting the reproduction signal for a predetermined period from the semiconductor memory when the reproduction of the tape recorder is stopped. 1. An additional device for a tape recorder, comprising: repeat means for repeatedly playing back; and means for switching between the voice operating means, pre-recording means and repeat means.