JPH11328819A - Power stepwise supply system electric apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily avert the trouble of a secondary side power supply section at the time of restarting power supply by controlling the secondary side power supply state after detecting in which of first and second positions a displacement member exists, which member is displaced to the first and second positions respectively varying from each other depending on whether during power supply or during non-power supply of the secondary side power supply section. SOLUTION: An optical disk 11 has a central hole 12 and is loaded on a turntable 13 in the central part. While the boss part of a clamper 14 is inserted into this central hole 12 from the side opposite to the turntable 13, the optical disk is held under pressure by the turntable 13 and the clamper 14 from both sides. The central hole 12 is rotated by a spindle motor and is rotated integrally with the optical disk 11 in the pressure holding state. An optical pickup 21 is put into power-on and standby positions respectively in the power-on state and standby state of the secondary side power supply section. The state of the power supply section may be detected on the secondary side from the output of a limit switch 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply type electric device including a primary power supply unit and a secondary power supply unit, such as an optical disk player.

[0002]

2. Description of the Related Art In electrical equipment such as an optical disk player,
When the plug is inserted into the outlet, first, only the primary power supply unit including the microcomputer is in the power supply state, and it is possible to receive power on / off instructions from a remote control switch or the like. When a switch is operated or power-on is instructed by a remote controller, the secondary-side power supply unit is supplied with power from the primary-side power supply unit.

In the optical disk player, when the power supply to the primary side power supply unit is temporarily interrupted (hereinafter, referred to as "power-off"), for example, a temporary power failure or a temporary disconnection of the plug When the power supply to the primary power supply is restarted, the secondary power supply returns to the state before the power was turned off, that is, If the power supply state (hereinafter, referred to as “power-on state”) and the power non-supply state (hereinafter, referred to as “stand-by state”) before power-off, the power-on state and the standby state will be maintained even after the power supply is resumed. It is appropriate to do so.

In a lock-type power switch that is operated by a user and alternately switched to an on position and an off position that differ from one operation to another, a power supply to the primary power supply unit is restarted after the power is turned off. Accordingly, power supply to the secondary-side power supply unit is controlled according to the ON position and the OFF position of the lock-type power switch, and the secondary-side power supply unit quickly returns to the state before the power was cut off. On the other hand, when the operation is released, it automatically returns to the original position,
A push-type power switch that alternately switches the secondary-side power supply unit of the optical disk player between a power-on state and a standby state for each operation by a user (aside from the one mounted on the optical disk player main body, the push-type power switch mounted on a cordless remote controller) However, from the position of the power switch, it is not possible to detect where the secondary power supply unit was before the power was turned off after the power supply was restarted. Therefore, in the conventional optical disk player, a backup of power is prepared so that this can be understood.
Even during the temporary power-off, the power supply state of the secondary-side power supply unit before the power-off is stored, and when the power supply to the primary-side power supply unit is resumed, the secondary-side power supply unit is operated according to the storage. It starts up in the power-on state and the standby state.

[0005]

In the conventional optical disk player, when the power supply to the primary power supply is restarted, the secondary power supply is started up in a state before the power is turned off. An element is required.

[0006] It is an object of the present invention to provide an electric power supply apparatus which overcomes the above-mentioned problems.

[0007]

According to the present invention, there is provided a power step-supply type electric apparatus having the following (a) to (e). (A) a primary-side power supply unit supplied with power from a power supply; (b) a secondary-side power supply unit whose supply of power from the primary-side power supply unit is controlled by a user operation switch; (c) a secondary-side power supply A displacement member that is displaced to first and second positions that are different from each other during power supply and non-power supply of the supply unit; (d) the primary-side power supply unit changes from the power non-supply state to the power supply state; When the displacement member (21) is switched to the first position or the second position, it detects whether the displacement member (21) is in the first position or the second position. Power supply control means for setting the units to a power supply state and a power non-supply state, respectively

[0008] The electric power supply type electric device (10) includes at least an optical disk player such as a CD player, an MD player, and a DVD player. The user operation switch includes not only a power switch provided on the main body of the electric power supply system, but also a power on / off instruction switch provided on a remote controller. The user operation switch includes not only an integrated switch that can perform power-on and power-off in common but also a separate switch that performs power-on and power-off exclusively. Both the integrated type and the separate type act as a trigger for power-on and power-off, and after the user's operation is released, the user operation of the last user-operation switch based on the user-operation switch switches to either power-on or power-off. It is impossible to detect whether switching has been performed.

[0009] When the power switch is operated by the user to switch the secondary power supply from the power supply state to the power non-supply state, the supply of power from the power supply to the primary power supply is maintained. Therefore, before the secondary power supply unit switches from the power supply state to the power non-supply state, the displacement member (21) is moved to the second position by the power of the secondary power supply unit.
From the position to the first position, and thereafter, the secondary-side power supply unit switches from the power supply state to the power non-supply state.
On the other hand, when the power of the primary-side power supply unit is turned off, the power of the secondary-side power supply unit and the primary-side power supply unit is cut off immediately after that, so the displacement member (21) , Cannot be displaced from the first position to the second position by the power of the secondary-side power supply unit, and is held at the first position. Therefore, next, when the power supply from the power supply to the primary side power supply unit is restarted, the position of the displacement member (21) is detected, and if the position is at the first and second positions, respectively, By setting the side power supply unit to the power supply state and the power non-supply state, respectively, the power step-supply type electric device (10) can start up the secondary side power supply unit in a state before the power is turned off. In this power stage supply type electric device (10), since the state of the secondary power supply unit immediately before the power of the power stage supply type electric device (10) is turned off can be stored by the position of the displacement member (21),
It is possible to omit the memory element and the backup power supply or reduce the capacity.

According to the electric power supply type electric device (10) of the present invention, the displacement member (21) needs to be displaced within the first range in order to perform its function. The first and second positions are set as positions inside and outside the first range, respectively.

The displacement member (21) simply outputs information on the power supply state and the power non-supply state of the secondary power supply unit before the power supply of the primary power supply unit is turned off, by using the power of the next primary power supply unit. It does not only exist as a substitute for the storage element that remains until the time of re-supply, but already exists to achieve a predetermined function during the power supply of the secondary power supply. Therefore, the number of parts can be reduced and the structure can be simplified. In addition, if only to perform a predetermined function, the displacement member (21)
Suffices that the displacement within the first range only be guaranteed. However, while the primary power supply unit is not supplying power, it is determined that the secondary power supply unit is in the power non-supply state. Displacement member (21)
Needs to be displaced to a second position outside the first range,
In order to secure such displacement to the second position, it may be necessary to slightly change the displacement range of the displacement member (21).

According to the electric power supply type electric device (10) of the present invention, the displacement member (21) is an optical pickup (21) having a function of reading data from the optical disk (11). The first and second positions are based on the radial position of the optical disk (11) from which data on the innermost circumference of the optical disk (11) can be read as a reference position, and include the reference position and move the optical disk (11) from the reference position. The position is set to a position in the radially outer range of the optical disc (11) from the reference position while excluding the position in the radially outer range of 11) and the reference position.

The optical pickup (21) includes a reference position and a radially outer area of the optical disk (11) from the reference position to cope with the reproduction of the optical disk (11) during the power supply from the secondary-side power supply unit. Located in. Therefore, if the second position is set within the radially inner range of the optical disc (11) from the reference position, the position of the displacement member (21) during power supply and non-power supply of the secondary-side power supply unit is clearly defined. Can be identified.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an optical disk player 10
FIG. 2 is a schematic structural diagram of a mounting range of the optical disc 11 in FIG.
The optical disk player 10 includes a primary power supply unit supplied with power from an outlet of another device such as an outlet or a receiver into which the plug is inserted, and a power switch (not shown) that supplies power from the primary power supply unit. And a secondary-side power supply unit for performing and stopping the supply. The power switch automatically returns to the original position when the operation is released, and when the user presses the switch for a short time, the output voltage changes only during the pressing, and the microcomputer detects this change and supplies the secondary side power. Section in the power supply state (hereinafter,
This is called "power-on state". ) And a power non-supply state (hereinafter, referred to as a “standby state”), and it is not possible to detect whether the power switch is in the power-on state or the standby state from the position of the power switch. Optical disk 11 such as CD, MD, or DVD
Has a center hole 12 and a turntable 13 at the center.
On the center hole 12 from the opposite side to the turntable 13.
While the boss of the clamper 14 is inserted, the clamper 14 is clamped by the turntable 13 and the clamper 14 from both sides. Center hole 12
Is rotated by a spindle motor (not shown),
It rotates integrally with the optical disc 11 in the pinched state. The lead-in area 17 is located at the innermost periphery of the data area 18 of the optical disk 11 and records management information such as TOC. D indicates the position of the optical disc 11 from the innermost track of the lead-in area 17.
In the power-on state, the optical pickup 21 displaces the light spot on the track of the data area 18 while displacing over the D range in the radial direction of the optical disc 11 in the power-on state. By irradiating, the data from the data area 18 can be read without any trouble. Although the optical disc 11 has various diameters, D differs depending on the diameter and type of the optical disc 11, but D is a radial range necessary for the optical pickup 21 to read data from all the optical discs 11. D is set so as to cover all types of optical disks 11 set in the optical disk player 10. The optical pickup 21 is defined as a power-on position when the optical pickup 21 is at a position where the light spot can be irradiated to the range of D, and a standby position of the optical pickup 21 when the optical spot is inside the range of D. I do. The optical pickup 21 is in a power-on position and a standby position in a power-on state and a standby state of the secondary-side power supply unit, respectively. The limit switch 22 is turned on by the contact from the optical pickup 21 when the optical pickup 21 is at the standby position, and is released from the contact from the limit switch 22 when the optical pickup 21 is at the power-on position. Automatically returns to off. Optical pickup from output of limit switch 22
It can be seen that 21 detects which of the power-on position and the standby position, that is, whether the secondary-side power supply unit is in the power-on state or the standby state.

An actuator for the optical pickup 21 for moving the optical pickup 21 in the radial direction of the optical disk 11 includes:
It operates by the power of the secondary power supply. The microcomputer that detects the output of the limit switch 22 operates by the power of the primary power supply unit. When in the standby state, the optical pickup 21 is at the standby position. When the user operates the power switch to switch from the standby state to the power-on state, the limit switch 22 is moved from the standby position to the power-on position by the actuator for the optical pickup 21. When the user operates the power switch to switch from the power-on state to the standby state, the actuator for the optical pickup 21 operates, and the limit switch 22 moves from the power-on position to the standby position. Switch to standby state. On the other hand, even though the power switch is turned on, the power supply to the optical disc player 10 is stopped when the primary power supply unit is switched from the power supply state to the power non-supply state due to disconnection of the plug from the outlet or the like instead of operating the power switch. Supply is lost, the optical pickup 21
Without being moved from the power-on position to the standby position by the actuator for the optical pickup 21,
It is held at the power-on position. When the power switch is in the standby state by the operation of the power switch, the optical pickup 21 is in the standby position, and is maintained in the standby position even when the primary power supply unit changes from the power supply state to the power non-supply state. You. Thus, even if the power supply of the primary power supply unit is cut off, it is possible to detect from the position of the optical pickup 21 whether the power supply unit is in the power-on state or in the standby state immediately before the power cut-off. When the power supply to the primary power supply unit is resumed, the microcomputer of the primary power supply unit turns on the limit switch 22,
It is detected whether the power switch is in the power on position or the standby position from the off state, and when the limit switch 22 is on or off, the secondary side power supply unit is turned on in the power on state and in the standby state, respectively, and started up.

FIG. 2 is a flowchart of a process performed in the optical disk player 10 when power is supplied to the primary power supply unit. When power is supplied to the primary power supply unit (S40), the microcomputer of the primary power supply unit is turned on (S41). Next, limit switch 22
Is turned on or off (S42), and the limit switch 22 is turned on.
Is ON, that is, if the secondary-side power supply unit is in the standby position immediately before the previous power-off, the secondary-side power supply unit is set to the standby state and started up (S43), and the limit switch 22 is turned off. If this is the case, that is, if the secondary-side power supply unit is at the power-on position immediately before the previous power-off, the secondary-side power supply unit is turned on and started up (S44).

[Brief description of the drawings]

FIG. 1 is a schematic structural diagram of a mounting range of an optical disk in an optical disk player.

FIG. 2 is a flowchart of a process performed in the optical disc player when power supply to a primary power supply unit is restarted.

[Explanation of symbols]

Reference Signs List 10 optical disk player (electric power supply type electric equipment) 11 optical disk 22 limit switch (position detecting means)

Claims (3)

[Claims] (A) a primary power supply unit supplied with power from a power supply; (b) a secondary power supply unit controlled by a user operation switch to supply power from the primary power supply unit; (C) a displacement member (21) which is displaced to first and second positions different from each other during power supply and non-power supply of the secondary side power supply unit, and (d) the primary side power When the supply unit switches from the power non-supply state to the power supply state, it detects whether the displacement member (21) is at the first position or the second position, and sets the displacement member (21) to the first position.
And a secondary-side power supply control unit for setting the secondary-side power supply unit to a power supply state and a power non-supply state when the power supply unit is at the second position, respectively. . 2. The displacement member (21) needs to be displaced within a first range in order to perform its function, and the first and second positions are respectively set to a first position. 2. The electric power supply apparatus according to claim 1, wherein the electric power is set as a position inside and outside of the range. 3. The displacement member (21) is an optical pickup (21) having a function of reading data from an optical disk (11), and the first and second positions of the optical pickup (21) are:
With the radial position of the optical disc (11) capable of reading the innermost data of the optical disc (11) as a reference position,
The reference position is set to a position in a radially outer range of the optical disc (11) from the reference position, and the reference position is set to a position in a radially inner range of the optical disc (11) from the reference position while excluding the reference position. 3. The electric power supply apparatus according to claim 2, wherein the electric equipment is provided.