JPH03260954A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To improve operability by providing a means which stops recording on a recording medium in the case that the stop of recording is instructed before the memory quantity of a data buffer holding a music signal becomes prescribed quantity. CONSTITUTION:When a recording start switch 20 is turned on, the output Q of an FF 16 becomes a high level through an AND gate 21 and an action that an inputted signal is stored in a buffer memory 2 is started. Then, when the output (c) of a comparator 11 is satisfied, that means, when the stored quantity of the memory 2 is over a set value, write enable (f) becomes the high level and the recording on the recording medium 5 is started. When a recording stop switch 23 is turned on before the output of the comparator 11 becomes the high level, the output (d) of the FF 16 becomes a low level and the write enable (f) becomes the low level. As the result, the recording on the recording medium 5 is stopped through a gate A 4.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a recording and reproducing apparatus for recording and reproducing music signals, and particularly to a recording method on a recording medium.

[Conventional technology]

Conventionally, so-called audio recorders that record music signals once on a recording medium and play them back later include compact power recorders, oven-reel tape recorders, and in recent years, optical disk recorders and digital audio tape recorders (DAT). . The method of recording on the medium, the method of modulating the human input signal, and the method of demodulating for reproduction differ depending on each recording medium. However, the basic configuration of any device is that there is a part that controls the input signal, which is processed and modulated by an encoder, and then a writing circuit, and if it is a compact cassette teleco or an open reel teleco , a magnetic head, an optical head for an optical disk recorder, and a D
In the case of an AT, recording is performed on a recording medium using a rotating magnetic head, depending on the characteristics of each type.

When recording music signals input with these devices,
At the same time as the recording start switch is turned on to the apparatus, the signal passes from the signal input section, through the encoder, and the writing circuit to the recording medium according to the order of the basic configuration described above.

In recent years, with the realization of satellite broadcasting and the increasing number of FM broadcast stations, music information sources with excellent sound quality have become available in ordinary households.
I feel like we've reached a situation where it's possible to do it manually. Therefore, such audio signals inputted by radio waves have been recorded in real time using a so-called air check, such as a compact telephone.

[Problem to be Solved by the Invention] However, when recording of an audio signal transmitted by radio waves is started and the recording is stopped due to reasons such as liking or disliking a song during manual audio monitoring, the configuration of the prior art described above does not work. In this case, recording to the recording medium has already been executed for the time from the start of recording to the stop of recording.

Therefore, in order to re-record that part as another song, it is necessary to rewind the cassette tape and reposition the magnetic head to any position on the recording medium, if it is a combination tape 1 to cassette teleco. The above operation δ naturally requires an operator's operation and takes time.

Furthermore, since music signals are continuously transmitted during this time, the opportunity to record audio signals during this time is lost.

Therefore, the recording/reproducing device had poor operability.

[Means to solve the problem]

The present invention is provided with a data buffer memory that temporarily holds a human-powered music signal when it is connected to record while being monitored by another playback device and there is a recording instruction, and when the data buffer memory exceeds a predetermined amount, the data is A recording and reproducing device reads signals from a buffer memory and records them on a recording medium, and if a recording stop instruction is received before the amount of data buffer memory reaches a predetermined amount, recording on the recording medium is not performed. This recording and reproducing apparatus clears the data buffer memory while listening to the sound of a signal source of another reproducing apparatus until a recording instruction is received.

[Effect]

Therefore, unless a predetermined amount of panzer memory is stored,
Since the recording operation to the recording medium is not actually performed, even if you have already turned on the recording start switch, if you decide that you do not like the song, you can turn on the recording stop switch to cancel recording and cancel the recording. To re-record from the recording position of the recording medium where the recording start switch was turned on, there is no need for unnecessary operations such as rewinding the tape as in conventional methods, and recording can be started simply by turning on the recording start switch. It is possible and
It is possible to provide an easy-to-use recording and reproducing device.

〔Example〕

FIG. 1 shows a system diagram of an embodiment of the present application.

A human signal encoder, a data buffer memory, a write address counter to the memory, a read address counter, a write circuit to the medium, and in addition, tie-up functions such as a memory write enable and a write circuit enable to satisfy the purpose of the present application. It consists of a switching control circuit. In addition, a PLL that keeps constant the phases of a write address counter for storing data in the data buffer memory and a read address counter for reading data therefrom is constructed using a subtraction circuit and a radio-controlled oscillator.

In this system diagram, the sequence when there is a recording instruction will be explained. When the recording start switch is closed, the output d of the flip-flow knob 16 controls the gate B7 to input the clock to the write address counter 8. As a result, the input signal passes through the encoder 1 and is stored in the panzer memory 2 in order from address 0 depending on which write address counter 8 is addressed.

The input signal is not recorded on the recording medium (eg, DA, T, etc.) 5 until a predetermined memory capacity is stored.

The comparison value set 10 stores a count value when the Panzer memory 2 checks the storage state of a predetermined capacity from the time the memory is stored until the start of recording on the medium.

This capacity is suitably in the range of 5 to 10 seconds. Because at this time, the operator started recording and now
This is the time to determine whether or not to stop recording this song while monitoring the input music signal. Therefore, if this time is too short, the determination cannot be made. In the case of air check, 5~ which corresponds to the prelude of the song
10 seconds is sufficient for that determination. Since the read address counter 9 for recording onto the recording medium 5 remains stopped until the write address counter 8 becomes equal to the comparison value, the output of the subtraction circuit 12 is directly transferred to the write address counter 8. Becomes a value. This and the aforementioned comparison value set 10 are compared by a comparator 11.

When this result becomes A<B, the flip-flop 15
is satisfied, the output of f is sent to the read address counter 9 for recording on the recording medium 5 by controlling gate C17 and gate A4.
Data that has been stored so far is read out from the buffer memory 2 addressed by , and recording is performed via the write circuit 3 . Here, the read address counter 9 operates using the output of the voltage controlled oscillator 13 as a clock. Further, the output of the subtraction circuit 12 is used as an input to the voltage controlled oscillator 13. Therefore, at the start of recording on the recording medium 5, the write address counter 8 is
Since it lags behind the read address counter 9 to the maximum, the voltage applied to the voltage controlled oscillator 13 increases, and the clock that operates the read address counter 9 is delayed from the clock that operates the write address counter 8, that is, the clock oscillator 6. Oscillates at a fast speed.

Thereafter, a stable state is gradually achieved due to the PLL circuit configuration of the read address counter 9, write address counter 8, subtraction circuit 12, and voltage controlled oscillator 3 described above. That is, the read address counter 8, which started with a delay of 5 to 10 seconds, follows up with a constant delay. This certain delay is also relevant when recording is stopped later, so it is desirable that it be shorter. This is because, if this delay is 4 to 5 seconds, then during this time after the recording stop switch is pressed,
The recording operation of the apparatus continues, and no operation switch from the operator is accepted.

Therefore, it is set to about several ms to several tens of ms. In addition, if the recording medium is an optical disc, the output of the voltage controlled oscillator 13 is used as the reference frequency for the disc rotation servo.
If the recording medium is a compact cassette tape, the frequency is outputted via the counter 14 as a reference frequency for the reel motor rotation servo, and the drive system is rotated in synchronization with this frequency. Therefore, no change in recording wavelength occurs.

In the above explanation, the digital tying circuit shown in the lower part of FIG. 1 will be explained in order to perform recording cancellation, which is the purpose of the present application. Recording stop switch, recording start switch and two flip-flops connected to them 15.16
FIGS. 2 and 3 show the operation timings of the circuit and the surrounding gate circuits. In FIG. 2, when the recording start switch 20 is turned on, the Q output of the flip-flop 16 becomes high level through the AND gate 21, and the operation of storing the input signal in the buffer memory 2 is started. As already explained, recording onto the recording medium 5 is not executed until the write address counter 8 exceeds the value of the comparison value cents 10. The gate signal that controls this is r in FIGS. 2 and 3. Here, the reason why the output of f is e and d is configured by the AND gate 22 is to prevent malfunction of the output of e in order to ensure recording. When the output C of the comparator 11 is satisfied, that is, when the amount of storage in the buffer memory exceeds the set value, the write enable of f becomes high and starts recording on the medium.

However, if the recording stop switch 23 is turned on before the output of C becomes high level, as shown in Figure 3, the write enable of f remains at a low level, so no recording is performed on the recording medium. .

Returning to FIG. 2, if the recording stop switch is pressed later after the actual recording to the recording medium is performed, the first
The output d of the flip-flop 16 in the figure goes low, then the write enable of f goes low, and the gate A4
Through this, recording on the recording medium 5 is stopped.

(Effects of the Invention) With the configuration as described above, when recording with air check etc., while monitoring the prelude part of the song,
If you want to cancel the recording of a song depending on your taste,
Even if you have already turned on the recording start switch, if you turn on the recording stop switch within the previous time, the recording operation to the recording medium is not actually performed, so it is easy to use and solves the previous problem. We can provide recording and reproducing devices.

Of course, to actually record onto the recording medium as is,
As in the past, recording is performed without the need for any operations.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. FIGS. 2 and 3 are timing charts.

Claims (1)

[Claims] A recording/playback device capable of recording music signals is equipped with a data buffer memory that temporarily holds the input music signal when a recording instruction is received, and when the data buffer memory exceeds a predetermined amount, the signal is read from the data buffer memory. However, the recording and reproducing apparatus that records on a recording medium is provided with a recording canceling means so as not to record on the recording medium if a recording stop instruction is received before the data buffer memory amount reaches a predetermined amount. A recording/reproducing device characterized by: