JP3164220B2 - Recording and playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Table of Contents] The present invention will be described in the following order. BACKGROUND OF THE INVENTION Problems to be Solved by the Invention Means for Solving the Problems (FIGS. 1 and 2) Function (FIG. 2) Embodiment (FIGS. 1 and 2) Effects of the Invention

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus, and is suitably applied to, for example, a small rotary head type digital audio tape recorder.

[0003]

2. Description of the Related Art Conventionally, in a digital audio tape recorder (DAT) of this kind, in order to reduce the time required for fast-forwarding and rewinding a magnetic tape, a motor for driving the magnetic tape in the fast-forward mode and the rewinding mode is used. It is designed to run the magnetic tape at high speed by adding the maximum power output.

[0004]

However, this type of D
In the AT, generally, even in the fast-forward mode or the rewind mode, the state where the power output is supplied to the signal processing system such as the recording circuit and the reproducing circuit is maintained, and the power consumption of the signal processing system is maintained. In particular, in a so-called portable DAT using a battery as a power source, there is a problem that sufficient power cannot be supplied to the motor in the fast-forward mode or the rewind mode.

In a case where the power supply voltage is lowered due to the exhaustion of the battery, if the fast forward mode or the rewind mode is to be executed while the power output is being supplied to the signal processing system, the power is supplied to the motor. Power supply voltage drops and the motor cannot rotate.

Further, if power is continuously supplied to the signal processing system in the fast-forward mode or the rewind mode which does not require the operation of the signal processing system, there is a problem that the life of the battery is shortened.

The present invention has been made in view of the above points, and it is an object of the present invention to propose a recording / reproducing apparatus which can further reduce power consumption in a fast-forward mode and a rewind mode.

[0008]

According to the present invention, there is provided a signal processing means for recording or reproducing data on a recording medium, and a recording medium driving means for driving the recording medium. , 21; power supply control means 12, 15, 16 for controlling the supply or stop of power from the power supply to the signal processing means 15, 16; Operation input means 13A to 13D capable of specifying return
When the recording or reproduction of data is designated by the operation input means 13A to 13D, the recording medium driving means 17, 2 is driven so that the recording medium is driven at the data recording or reproduction speed.
1 and power supply control means 12, 15, 16 so as to supply power to the signal processing means 15 or 16, and fast-forward or rewind of the recording medium is designated by the operation input means 13A to 13D. Recording medium driving means 17 so that the recording medium is driven at a fast-forward or rewind speed.
21 so that the power supply to the signal processing means 15 and 16 is stopped.
And a control means 12 for controlling the control unit 6.

[0009]

In a mode in which signals such as the recording signals S5 and S8 and the reproduction signals S6 and S9 are not actually processed, such as the fast-forward mode and the rewind mode, the signal processing of the recording signals S5 and S8 and the reproduction signals S6 and S9 is performed. By controlling the traveling drive means 17 and 21 for traveling the recording medium while controlling the means 15 and 16 to the off state, the power consumption can be further reduced in the fast forward mode and the rewind mode, and the power consumption can be further reduced. Sufficient power can be supplied to the traveling drive means 17 and 21.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

In FIG. 1, reference numeral 10 denotes a DAT as a whole, and includes a recording key 13A, a reproduction key 13B, and a fast-forward key 13.
C, a rewind key 13D and a stop operation key 13E for turning off these keys are connected to the system control circuit 12, and the recording circuit 15, the reproduction circuit 16 and the motor 21 for driving the magnetic tape are operated in accordance with the operation of each key. Has been made to control.

That is, when the recording key 13A connected to the system control circuit 12 is turned on to enter the recording mode, the DAT 10 sets the motor control signal S3 sent to the motor control circuit 17 to the "H" level. At the same time, the motor control circuit 17 sends out a control signal for driving the motor 21 for driving the magnetic tape to rotate at the rotation speed in the recording mode, whereby the motor control circuit 17 and the power output VB of the power battery (+ B) The motor 21 is driven to rotate at the recording mode rotation speed by sending the drive signal S7 to the motor 21 based on the above.

At the same time, the system control circuit 12 changes the recording circuit control signal S1 sent to the recording circuit 15 to "H".
By raising the level to the level, the recording circuit 15 receives the power output VCC output from the power battery (+ B) via the DC / DC converter 19 to be turned on, and the input audio signal input from the audio input unit 22 S5 is input and subjected to predetermined signal processing to send it to the magnetic head 24 as a recording signal S8.

At this time, the system control circuit 12 causes the reproduction circuit control signal S2 to be sent to the reproduction circuit 16 to fall to the "L" level, whereby the reproduction circuit 16 is switched from the power supply battery (+ B) via the DC / DC converter 19. Is turned off without inputting the power output VCC that is output as a result and the reproduction signal processing is not executed.

On the other hand, when the reproduction key 13B connected to the system control circuit 12 is turned on to enter the reproduction mode, the system control circuit 12 sets the motor control signal S3 sent to the motor control circuit 17 to the "H" level. At the same time, the motor control circuit 17 sends out a control signal for driving the motor 21 to rotate at the rotation speed in the reproduction mode, whereby the motor control circuit 17 and the power supply battery (+ B)
By transmitting a drive signal S7 to the motor 21 based on the power supply output VB of the power supply, the motor 21 is rotationally driven at the rotational speed for the reproduction mode.

At the same time, the system control circuit 12 sets the reproduction circuit control signal S2 sent to the reproduction circuit 16 to "H".
When the level rises to the level, the reproducing circuit 16 receives the power supply output VCC output from the power supply battery (+ B) via the DC / DC converter 19 to be turned on, and outputs the reproduction signal S9 input from the magnetic head 24. The audio signal is input and subjected to predetermined signal processing to be output to the audio output unit 23 as an output audio signal S6.

At this time, the system control circuit 12 causes the recording circuit control signal S1 sent to the recording circuit 15 to fall to the "L" level, so that the recording circuit 15 is switched from the power supply battery (+ B) via the DC / DC converter 19. Is turned off without inputting the power output VCC that is output from the controller, and is controlled to a state in which the recording signal processing is not executed.

On the other hand, when the fast-forward key 13C connected to the system control circuit 12 is turned on to enter the fast-forward mode, the system control circuit 12 causes the motor control circuit 1 to operate.
7, the motor control signal S3 is raised to the "H" level, and a control signal for driving the motor 21 to rotate at the rotation speed in the fast-forward mode is transmitted, whereby the motor control circuit 17 By transmitting a drive signal S7 to the motor 21 based on the power supply output VB of the power supply battery (+ B), the motor 21 is rotationally driven at a high rotation speed for the fast-forward mode.

At the same time, the system control circuit 12 changes the recording circuit control signal S1 sent to the recording circuit 15 to "L".
By falling to the level, the recording circuit 15 is turned off without inputting the power supply output VCC output from the power supply battery (+ B) via the DC / DC converter 19, and is controlled so as not to execute the recording signal processing. You.

At this time, the system control circuit 12 causes the reproduction circuit control signal S2 to be sent to the reproduction circuit 16 to fall to the "L" level, whereby the reproduction circuit 16 is switched from the power supply battery (+ B) via the DC / DC converter 19. Is turned off without inputting the power output VCC that is output as a result and the reproduction signal processing is not executed.

Accordingly, the power supply battery (+ B) is prevented from being consumed by setting the recording circuit 15 and the reproduction circuit 16 to the off state so that the power supply output VCC is not supplied.

On the other hand, when the rewind key 13D connected to the system control circuit 12 is turned on to enter the rewind mode, the system control circuit 12
7, the motor control signal S3 is raised to "H" level, and a control signal for driving the motor 21 to rotate at the rotation speed in the rewind mode is transmitted. By transmitting a drive signal S7 to the motor 21 based on the power output VB of the power supply battery (+ B), the motor 21 is driven to rotate at a high rotation speed for the rewind mode.

At the same time, the system control circuit 12 changes the recording circuit control signal S1 sent to the recording circuit 15 to "L".
By falling to the level, the recording circuit 15 is turned off without inputting the power supply output VCC output from the power supply battery (+ B) via the DC / DC converter 19, and is controlled so as not to execute the recording signal processing. You.

At this time, the system control circuit 12 causes the reproduction circuit control signal S2 sent to the reproduction circuit 16 to fall to the "L" level, so that the reproduction circuit 16 receives the signal from the power supply battery (+ B) via the DC / DC converter 19. Is turned off without inputting the power output VCC that is output as a result and the reproduction signal processing is not executed.

Accordingly, the power supply battery (+ B) is prevented from being consumed by setting the recording circuit 15 and the reproducing circuit 16 to an off state so that the power supply output VCC is not supplied.

On the other hand, when the stop operation key 13E connected to the system control circuit 12 is turned on to enter the stop mode, the system control circuit 12 changes the motor control signal S3 sent to the motor control circuit 17 to the "L" level. By falling, the motor control circuit 17 is controlled so as not to receive the power output VB of the power battery (+ B), and stops driving the motor 21.

At the same time, the system control circuit 12 changes the recording circuit control signal S1 sent to the recording circuit 15 to "L".
By falling to the level, the recording circuit 15 is turned off without inputting the power supply output VCC output from the power supply battery (+ B) via the DC / DC converter 19, and is controlled so as not to execute the recording signal processing. You.

At this time, the system control circuit 12 causes the reproduction circuit control signal S2 to be sent to the reproduction circuit 16 to fall to the "L" level, whereby the reproduction circuit 16 is switched from the power supply battery (+ B) via the DC / DC converter 19. Is turned off without inputting the power output VCC that is output as a result and the reproduction signal processing is not executed.

In the above configuration, the DAT 10 has a recording circuit control signal S1 and a reproduction circuit control signal S1 as shown in FIG.
2 and the motor control signal S3 are controlled in accordance with each key operation, so that the recording circuit 15 operates only when the recording key 13A is turned on to enter the recording mode REC (or the recording pause mode PAUSE). At the same time as the reproduction circuit 16 is turned on, the reproduction circuit 16 is turned on only when the reproduction key 13B is turned on to enter the reproduction mode state PB (or the reproduction pause mode state PAUSE).

Accordingly, in the fast forward mode FF when the fast forward key 13C is turned on and in the rewind mode REW when the rewind key 13D is turned on, the recording circuit 15 and the reproducing circuit 16 are turned off. By doing so, consumption of the power supply battery (+ B) can be prevented.

In the fast-forward mode and the rewind mode, the motor 21 for driving the magnetic tape is rotated at a high speed.
In this case as well, by turning off the recording circuit 15 and the reproducing circuit 16, the output VB of the power supply battery (+ B) can be effectively used for driving the motor.

Accordingly, even when the power supply battery (+ B) is consumed and the power supply voltage is lowered, for example, the power supply is supplied to the recording circuit 15 and the reproduction circuit 16 when executing the fast forward mode and the rewind mode. To this extent, the power output can be used for driving the motor, and the lower limit voltage value of the power supply battery capable of executing the fast forward mode and the rewind mode can be further reduced.

According to the above arrangement, the signal processing system such as the recording circuit and the reproduction circuit is controlled to be in the off state in the mode state in which the recording signal or the reproduction signal is not actually processed, such as the fast forward mode and the rewind mode. By doing so, power consumption can be further reduced and battery life can be extended.

The lower limit voltage value of the power supply battery capable of executing the fast-forward mode and the rewind mode can be further reduced, so that even when the power supply voltage value is reduced due to the battery life or the like, the rotation of the motor is reduced. The disabled state can be avoided as much as possible.

In the embodiment described above, the present invention is applied to the D
Although the case where the present invention is applied to an AT has been described, the present invention is not limited to this, and can be widely applied to various other recording / reproducing devices such as a video tape recorder (VTR).

[0036]

As described above, according to the present invention, not only when recording or reproduction is designated by the operation input means, but also when
Even when fast-forward or rewind is designated, the control means directly controls the recording medium driving means and the power supply control means, so that the control means can be controlled at a high response speed with a simple configuration. It is possible to realize a recording / reproducing apparatus that can further reduce power consumption.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a recording / reproducing apparatus according to the present invention.

FIG. 2 is a table showing a control state of a signal processing system and a motor by key operation.

[Explanation of symbols]

10 DAT, 12 System control circuit, 13A
... Recording key, 13B ... Reproduction key, 13C ... Fast forward key, 13D ... Rewind key, 13E ... Stop operation key, 15 ... Recording circuit, 16 ... Reproduction circuit, 17 ... Motor control circuit, + B ...... Power supply battery, 21 ... Motor.

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 20/02 H04N 5/782

Claims (1)

(57) [Claims] 1. A against the recording medium to record or reproduce data
A signal processing unit that, the recording medium driving means for driving the recording medium, and a power supply supply control means for controlling the supply or stop of to said signal processing means from the power supply, the data of at least said recording medium recording or reproduction, or the fast-forward or rewind Mr. capable specifies the operation of the recording medium
When data recording or reproduction is designated by the input means and the operation input means, the recording medium is recorded or reproduced at the data recording or reproducing speed.
In controlling the recording medium drive means to drive and <br/> controls the power supply control means so that to supply power to said signal processing means, by connexion recorded in the operation input means when the fast-forward or rewind's medium is specified, the recording medium
Drive the recording medium so as to drive at the fast-forward or rewind speed.
Controls motion means, and recording and reproducing apparatus characterized by comprising a control means for controlling the power supply control means so as to stop the supply of power to the signal processing means.