JPS5972604A - Automatic fade-out sound recorder in tape recorder - Google Patents

Abstract

PURPOSE:To sound record automatically a new content by sound recording signals after program-searching the sound recorded content permitted for erasure on a sound recorded magnetic tape and feeding in fast forwarding mode and rewinding. CONSTITUTION:After the recorded magnetic tape 3 is set and a music permitted for erasure is program-searched, the 1st key switch KEY1 is turned on, then a counter 8 counts additionally a tape running pulse TP. When the tape 3 is fed to its end in the fast forwarding mode, the tape recorder is switched into the rewinding mode, and a value subtracting a count value CF required for the fade- out from the maximum count value CE is stored in the counter 8, and then the pulse TP is subtracted. When the count value reaches a value CS, the tape recorder is brought into the sound recording wait state. In turning in the 2nd key switch KEY2, the sound recording signal is sound recorded on the tape 3. Thus, a part of the sound recording of the tape is erased and a new content is sound recorded with automatic fade-out.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an automatic fade alarm 1 to a recording device for erasing a part of the recording content of a recorded sound magnetic tape and automatically fading out a longer recording content in a tape recorder. Regarding.

Some conventional tape recorders had a fade-out device called an auto fader, but the start of the fade-out had to be input manually, so for example, when recording a part of a recorded sound magnetic tape, If you erase the content (hereinafter also referred to as a "song") and try to record a longer song with a fade-out, you will have to rely on the tape counter to start the fade-out, which may cause the counter to shift. There was a risk that the previous song would remain or the beginning of the next song would be erased due to an erroneous operation.

In the case of a tape recorder that has not yet been installed, it is necessary to manually gradually reduce the recording level after starting the fade-out, which requires considerable skill.

The present invention eliminates the troublesomeness of such operations and the fear of erroneous operations, and provides a tape recorder equipped with a control circuit that switches and controls the running of the magnetic tape and the recording/playback state according to input signals. The purpose is to erase part of the recorded content on a tape and record new content in its place by automatically applying an accurate fade error 1.

Therefore, in a tape recorder, by turning on the first key and the inch, the present invention starts recording the tape and memorizes the fast-forward start point, and when an unrecorded part between songs is detected, fade alarm 1 is set. -between'lfj
Memorize the point and rewind the tape, stop at the fast forward start point, enter recording standby mode, turn on the first and second key switches to start recording, and then repeat the previously memorized Fate-Ara 1~ To provide an automatic fade-out recording device which automatically starts fade-out from a starting point and finishes recording by the time an unrecorded part of one song is reached.

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

FIG. 1 is a block diagram showing one embodiment of the present invention, and the usual recording/reproducing circuit, magnetic tape drive circuit, etc. of a tape recorder are omitted from illustration.

The control circuit 1 manages the system control of the tape recorder,
F, F, REW, S TOr', It
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The plunger or force 11 motor that operates the reel motor, capstan motor, and head block is controlled according to the trigger input No. 8 of RIECPLA'/, PL, and AY to run and record the magnetic tape. It has the function of +VJ change control in the 41-state evening, fast forward 2 rewind, stop, recording standby, recording, and playback state.

When the first key switch KEY1 is turned on, it turns on the 1-transistor 1 and sends a fast forward start signal 1'', F, to the control circuit 1.

When the second key switch K E 'Y 2 is turned on, it turns on the transistor 2 and sends the distorted p-sound start signal RECl11. to the control circuit 1. Enter A'/.

3 is a magnetic tape, 4 is a playback head, and 5 is a recording head. An unrelated sound part detection circuit 6 rectifies and smoothes the playback signal from the playback head 4, and when the output falls below a predetermined level, it detects an already recorded magnetic tape. A non-recorded portion between songs on the tape is detected and rewinding start signals R and EW are manually input to the control circuit 1.

During normal recording, the fade-out circuit 7 passes the recording signal as it is to the recording head 5 and produces 61 notes on the magnetic tape, but when in operation, the fade-out circuit 7 gradually attenuates the recording signal. A stop signal 5TOP is output to the control circuit 1 at the end of the fade ant output and the recording level has been reduced to zero.

The counter 8 indicates whether the first key switch KI? : When Yl is turned on, the fast-forwarding start signal resets the value from 1 to 1, but the support is to memorize the value CS at the time of Meng, and use a pulse generator (not shown) to keep the magnetic tape O constant. The addition cycle 1- of the tape running pulse TP that is generated for each running distance is started, and the unrecorded part of the recorded magnetic tape B is detected by the unrelated sound part detection circuit 6, and the rewinding start signal REW is input to the control circuit 1. , the predetermined Karun 1 required to fade out from the current maximum Karun 1 - value CE
The value (CE-CF) obtained by subtracting the -values C and F is stored as the run 1- value of the fade-out start point, and then the subtraction run 1- of the tape running pulse during rewinding is started.

Then, when the count value reaches zero or the value C3 stored at the start of fast forwarding, the recording standby signal R'E is sent to the control circuit 1.
CPAUSIE is inputted, and then during recording, when the current signal becomes CE-CF, an operation start signal FAD is inputted to the fade alarm 1 circuit 7.

Next, the operation of this embodiment will be explained with reference to flowchart 1- in FIG.

Before starting recording, after setting the recording sound magnetic tape filter and locating the beginning of a song that can be erased, turn on the first key switch I < ri, Y ] ti- to turn on the counter 8.
After storing the current value CS (C5=O in the case of reset), the control circuit 1 puts the tape recorder into the fast forward state, so the counter 8 adds the tape running pulse P that occurs at that time. to.

Already N, up to the end of the song where the sonic magnetic tape is recorded? When the magnetic tape is fed, the unrecorded part detection circuit 6 detects the unrecorded part between the songs, and the control circuit 1 then stops the running of the magnetic tape 1 and then switches to rewinding. At the time of rewinding, the counter 8 stores the value (G E - CF ) obtained by subtracting the predetermined values C and F necessary for the fade 71 from the maximum value C and F at that time. The tape running pulse ``■''P is subtracted l-.

Then, when the count 1 reaches CS (if reset at the start of fast forwarding, or 0), the control circuit 1 stops the running of the magnetic tape O by the recording standby signal RECPAUSE from the counter 8, and starts recording the tape. Put the recorder into recording standby mode.

Then, when the second key switch KEY2 is turned on, the control circuit 1 starts recording, and the recording signal passes through the fade-out circuit 7 and is manually input to the recording head 5 to be recorded on the magnetic tape B.

At this time, it goes without saying that the previously recorded contents are sequentially erased by a 5% erase head (not shown).

Then, even during recording, the counter 8 adds the tape running pulse to the initial count L-t, and when the counter I-value reaches CE-CF, the fader 1-circuit 7 starts operating.
The recording signal is gradually attenuated to fade to 1.

When the recording level becomes 0 and the recording level reaches zero, the stop signal ST (l
11 is output, and the control circuit 1 stops the running of the magnetic tape filter and stops the tape recorder. , to state.

In addition, it is not necessary to output the stop signal 5TOP from the fade 791 to the circuit 7, and in that case, the unpaid note part detection circuit 6
When it detects a non-pp sound part between songs, it enters the rewind state and enters the recording standby state at the recording start position.If the playback start signal PRAV is input to the transfer/control circuit 1, the recorded content will be immediately played back. can do.

The recorded contents of recorded sound magnetic tapes are not limited to music, but if multiple contents are recorded consecutively via an unrecorded section, some of the recorded contents can be erased and new contents can be created. It can be applied when trying to record.

In addition, there is a brisset signal on the output side of the free note part detection circuit 6 as shown by the broken line in FIG. If a counter 9 is inserted and the number of consecutive recorded contents that can be erased is preset in this counter 9, it can be erased in the same way as the conventional one-click function. When the unrecorded part detection circuit 6 detects an unrecorded part between the highest recorded content and the next recorded content, the BRILLEF 1 to the counter 9 output an output signal. New content can be recorded in place of the recorded content with automatic fade-out.

As explained above, according to the present invention, after locating the recording content that can be erased on the recorded sound magnetic tape, the first key switch is turned on to perform fast forwarding and rewinding. If you turn on the second key switch and start recording, the tape will automatically fade out from the desired point without having to monitor the tape counter during recording, and a new recording will start at the end of the recording that can be erased. recording.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a flow diagram showing its operation. 1.Control circuit Magnetic tape 4.Playback head 5.Recording head 6.No-note part detection circuit 7.Fade-out circuit 8.Counter KEY]
・First key switch K T3'Y 2・-: Second key switch Fig. 1

Claims (1)

[Scope of Claims] 1. In a tape recorder equipped with a control circuit that switches and controls running and recording/playback states of a magnetic tape in accordance with input signals, a first key switch that inputs a fast forward start signal to the control circuit. a second unrecorded part detection circuit which detects an unrecorded part of the recorded sound magnetic tape and inputs a rewinding start signal to the control circuit; and a second part which inputs a recording start signal to the control circuit.
a key switch, a circuit to a fader 1 which gradually attenuates the recording signal manually applied to the recording head, and a value is reset or stored in the fader 1 by a fast forward start signal from the first key switch. Then, the addition count of tape running pulses is started, and the rewinding start signal from the unrelated sound part detection circuit causes the II! The value obtained by subtracting a predetermined number 1 value from the maximum count value of i is stored as the number number 1 value at the fade-out start point, and subtraction counting of tape running pulses during rewinding is started, and if the count value is zero or fast forward When the value memorized at the start is reached, a recording standby signal is input to the control circuit, and the count l~ is input during recording.
1. An automatic fade alarm 1-recording device comprising: a counter that outputs a signal that causes the fade-out circuit to start operating when the value reaches the value stored as the count value of the fade-out start point.