JPH11296932A - Magnetic recording/reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a power supply to an LED/photosensor at a standby time and to reduce power consumption at the standby time by detecting cassette insertional operation at the standby time with a switch without power consumption instead of the LED/photosensor. SOLUTION: This device is constituted so that a detection switch 15 is arranged on a frame 12, and an on/off output is imparted to a system control microcomputer by a projection part 7b provided on a drive gear 7 according to the rotation of the drive gear 7. When a cassette is inserted, and a slider assembly 1a is pushed, the drive gear 7 is turned, and the detection switch 15 knob beforehand depressed by the projection part 7b is lifted up, and the detection switch 15 is changed from on into off. The microcomputer judges the insertion of the cassette by the off signal, and starts a regular mode from a power save mode at the standby time, and supplies power to the photosensor 13 and the LED to detect cassette loading and a cassette state hereafter. When recording/reproducing operation is ended, and the cassette is ejected, the power save mode at the standby time is set again.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to standby power saving in a magnetic recording / reproducing apparatus having a cassette loading mechanism.

[0002]

2. Description of the Related Art An embodiment of a conventional magnetic recording / reproducing apparatus will be described with reference to FIGS.

FIG. 5 is a top view of a cassette loading mechanism. In the figure, a pin 1a is provided at both ends of a slider assembly 1, and a frame L2 and a frame R are provided.
3 are erected in parallel.

On the other hand, as a driving means, a driving angle 4 and a double-acting rack 5 are arranged so as to overlap with each other. .

The drive gear R7 is rotatably assembled to the frame R3, and the drive gear L8 is also rotatably assembled to the frame L2 together with the slider assembly 1.

The cassette control assembly constituted as described above is fixed to the chassis 10 and forms a part of a mechanical assembly (not shown) as a cassette loading mechanism.

[0007] The drive rack 5 is meshed with a drive gear 11 arranged on a chassis 10, and a drive force from a loading motor (not shown) is transmitted.

FIG. 6 shows a side view of the cassette loading mechanism. In this figure, frame L2, frame R
Each of the grooves 3 is provided with a groove 2a, 3a, and the pin 1a is slidably incorporated in the groove 2a, 3a.

The drive gear R7 is provided with a groove 7a, and the pin 1a of the slider assembly is slidably penetrated. Similarly, the drive gear L8 is provided with a groove 8a.
A pin 1a of the slider assembly is slidably penetrated.

The drive gear R7 and the drive gear L8 operate synchronously with the main shaft 9. Reference numeral 12 denotes a main board for fixing the mechanical assembly, on which a circuit including an LED (not shown), a pair of optical sensors 13, and a system control microcomputer (not shown) is mounted.
A light guide 14 penetrates and is fixed to a portion of the chassis 10 directly above the LED.

One optical sensor 13 is provided on the substrate with the light guide 14 interposed between the frame L2 and the other optical sensor 13 with the frame R3 and the double-acting rack 5 interposed therebetween.

The frames L2 and R3 are provided with through holes 2b and 3b at positions facing the light receiving portion of the optical sensor 13, and light emitted from the LEDs is guided by the light guide 14 and reaches the optical sensor 13. .

A wing portion 5a is formed at the tip of the double-acting rack 5, and can selectively pass / block the LED light reaching the optical sensor 13 depending on the position of the double-acting rack.

FIG. 7 is a tape cassette ejection state diagram.
FIG. 8 showing a tape cassette loading start state diagram.
The operation will be described below.

At the ejecting position, the tip wing 5a of the double-acting rack 5 blocks the light of the LED, which is always lit, from reaching the optical sensor 13.

When a user inserts a cassette (not shown) and pushes a slider assembly (not shown), the drive gear R7 rotates and the double-acting rack 5 moves.

When the double-acting rack 5 moves, the wing 5
a comes off the through hole 3b of the frame R3, and the optical sensor 13
Are exposed, the optical sensor 13 detects the light of the LED.

A main microcomputer (not shown) receives the signal from the optical sensor 13 and recognizes the cassette insertion operation, rotates the loading motor, and the rotational force is transmitted to the drive angle 4 via the drive gear 11 and the cassette is rotated. Loading is performed.

When required operations such as recording / reproduction are completed,
The cassette loading mechanism performs a cassette discharging operation, and in the state of FIG. 7 in which the cassette is ejected, the standby power saving mode is set, and a series of operations is completed.

[0020]

In the standby power saving mode in the ejected state of the cassette, even if the main power switch is turned off, if the timer function is provided, the power supply for holding the function is performed and the user's cassette is turned on. In order to detect the insertion and immediately load the cassette, the LED / light sensor must be constantly energized. Even in the standby power saving mode, power consumption by the LED / light sensor occurs. I was

[0021]

The detection of the cassette insertion operation at the time of standby is changed to an LED / light sensor, and a detection switch consuming no power is used. By not energizing the sensor, the power consumed by the LED or optical sensor is reduced to zero.
In addition, the system control microcomputer can significantly reduce standby power consumption by waiting in a state where power consumption is small enough for timer management and cassette insertion detection.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a magnetic recording / reproducing apparatus according to the present invention will be described with reference to FIGS. 1 to 4. .

FIG. 1 is a top view of the cassette loading mechanism, which is the same as the conventional example, and a description thereof will be omitted.

FIG. 2 is a side view of the cassette loading mechanism.

1 and 2, reference numeral 7b denotes a protrusion provided on the drive gear R7, and reference numeral 15 denotes a detection switch for detecting insertion of a cassette.

The detection switch 15 is disposed on the main board 12, and provides an on / off output to the system control microcomputer by a projection 7b provided on the drive gear R7 in accordance with the rotation of the drive gear R7.

Next, the operation will be described with reference to FIGS.

FIG. 3 is a diagram showing a state in which the tape cassette is ejected.
The knob is pushed down to be in the ON state, and the through hole 3b of the frame R3, which is the optical path of the optical sensor 13, is covered by the double-acting rack tip wing 5a.

However, in this state, since the standby power saving mode is set, the power supply to the LED and the optical sensor is also cut off in the present invention.

FIG. 4 is a diagram showing a tape cassette loading start state. When a user inserts a cassette and pushes a slider assembly (not shown), the drive gear R7 rotates, and the rotation direction is the drive gear R7. In the direction in which the protrusion 7b is separated from the detection switch 15 knob.
As a result, the detection switch 15 knob which has been depressed is raised, and the detection switch 15 is turned off from on.

By the off signal from the detection switch 15,
The system control microcomputer determines that the cassette has been inserted, and starts up from the standby power saving mode to the normal mode.

When the optical sensor 1 is activated in the normal mode,
3 and the LED are also energized, and the cassette state detection for detecting the presence or absence of the cassette and the start and end of the winding of the tape in the recording / reproducing operation, including the subsequent cassette loading operation, is detected by the LED and the optical sensor 13. Will be done.

When a required operation such as recording / reproduction is completed and a cassette eject instruction is issued, the cassette loading mechanism performs a cassette ejecting operation, and switches to a standby power saving mode in the cassette ejecting state shown in FIG. Is set, and a series of operations ends.

In this embodiment, the knob of the detection switch 15 is switched by the protrusion 7b provided on the drive gear R7. However, the detection switch 15 is turned on / off by a movable portion related to the insertion of the cassette. And the same result can be obtained.

In the standby power saving mode, the detection switch 1
Although the pressing force is applied to 5, it is naturally possible to apply the pressing force in the normal mode.

[0036]

According to the present invention, the cassette insertion operation during standby is detected by a detection switch.
/ By setting the power consumption mode to low power consumption only for timer management and cassette insertion detection, it is possible to greatly reduce standby power consumption. Also, as in the embodiment of the present invention, the cassette insertion is performed by using the LED / optical sensor and the detection switch in combination, whereby the program of the system control microcomputer which detects the cassette insertion by the LED / optical sensor and the peripheral circuit are provided. Power saving during standby can be realized without a significant change in

[Brief description of the drawings]

FIG. 1 is a top view of a cassette loading mechanism according to an embodiment of the present invention.

FIG. 2 is a side view of the cassette loading mechanism according to the embodiment of the present invention.

FIG. 3 is a side view of a cassette ejection state according to the embodiment of the present invention.

FIG. 4 is a side view of a cassette insertion state according to the embodiment of the present invention.

FIG. 5 is a top view of a conventional cassette loading mechanism.

FIG. 6 is a side view of a conventional cassette loading mechanism.

FIG. 7 is a side view of a conventional state of cassette ejection.

FIG. 8 is a side view of a conventional cassette insertion state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slider assembly 2 Frame L 3 Frame R 4 Drive angle 5 Double-acting rack 6 Double-acting spring 7 Drive gear R 8 Drive gear L 9 Main shaft 10 Chassis 11 Drive gear 12 Frame 13 Optical sensor 14 Optical guide 15 Detection switch

Claims (2)

[Claims] 1. A magnetic recording / reproducing apparatus having a cassette loading mechanism and a standby power saving mode controlled by a system control microcomputer, comprising a detection switch which is turned on / off in conjunction with a member constituting the cassette loading mechanism. A magnetic recording / reproducing apparatus, wherein the detection switch is a trigger switch for detecting presence / absence of insertion of a cassette and for instructing a system control microcomputer to control a normal operation mode from a standby power saving mode when a cassette is inserted. 2. A magnetic recording / reproducing apparatus having a cassette loading mechanism, a standby power saving mode controlled by a system control microcomputer, and an LED and an optical sensor for detecting presence / absence of insertion of a cassette and start / end of winding of a tape. A cassette state detecting means, a power supply control means for the cassette state detecting means in a standby power saving mode, and a detection switch which is turned on / off in conjunction with a member constituting a cassette loading mechanism. A magnetic recording / reproducing apparatus, wherein the detection switch is a trigger switch for detecting insertion of a cassette and instructing a system control microcomputer to control a normal operation mode from a standby power saving mode.