JPH03218228A - Power source closing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to a power-on headset, and in particular, to a main switch for supplying power supply voltage to all sets 1 to 1 of a television set, etc. This invention relates to a power-on device that can automatically turn on a switch for supplying power supply voltage to each circuit.

(Conventional technology) Conventionally, in a deletion set 1, etc., there is a switch (hereinafter referred to as a sub-switch) for supplying power to each circuit in the set 1, and a switch that supplies power from a commercial AC power source to the entire set. Many scales have a main switch for supplying the power.In the conventional power-on device of this scale, even if the sub-switch is off, when the user turns on the main switch, the sub-switch will also be turned on. Many devices have a so-called main power one-shot power-on function that automatically turns on and supplies power to each circuit.In this case, it detects the state of the main switch and A control device is equipped to control the device. However, it is necessary to constantly supply power to this control device even when the main switch is off, which has the disadvantage of increasing power consumption. Therefore, when the main switch is turned on, A conventional power-on neck device has been proposed in which power is supplied to the control device and a sub-switch is turned on when the power is turned on.

FIG. 3 is a block diagram showing such a conventional power-on device, and FIG. 5 is a timing chart for explaining its operation. Further, FIG. 4 is an explanatory diagram showing the configuration of the main switch and the main switch operation detection device. 5(a) shows the power supply voltage of the power supply circuit 2, FIG. 5(b) shows the on/off state of the power switch 3a, and FIG. 5(C). (d) shows the operation detection signal.

The main switch 1 is, for example, ESB999 made by Matsushita, and has a normal locking type power switch 3a and a signal switch sb interlocked with the switch Sa, as shown in Fig. 4. ing. The power switch 3a is displaced by pushing in a shaft (not shown).
By being biased by a spring or the like, the switch is moved back from the full circle position to a predetermined position within the movable range, and is locked and maintained in the on state. Further, by pushing the shaft to the full stroke position, the lock is released and turned off. The signal switch sb is turned on only when the shaft of the power switch Sa is pushed to the full position. When the power switch Sa turns to A, power is no longer supplied to the power supply circuit 2 from the commercial AC power supply 7. A resistor R1 and a capacitor C constituting the main switch operation detection device 3 are connected between the power supply circuit 2 and the reference potential point (not shown in FIG. 3).
.

The connection point between the resistor R1 and the capacitor 4''C is connected to the terminal a of the signal switch sb via the resistor R2, and the terminal b of the signal switch sb is connected to the quasi-potential point M.
An operation detection signal appears at the connection point between 1 and capacitor C.

Now, assume that you want to operate the power switch Sa of the main switch 1 to switch it from A to ON.

In this case, the power switch Sa is first turned on by pressing the unillustrated shaft of the power switch Sa (Fig. 5(b)), and then, when the shaft reaches the full stroke position, the signal switch sb is also turned on. do. When the power switch Sa is turned on, power is supplied to the power supply circuit 2 from the commercial AC power supply 7, and the power supply voltage of the power supply circuit 2 increases (Fig. 5(a)), and the -1 capacitor C is charged and the As shown in FIG. 5(C), the operation detection signal level becomes too high. When the signal switch sb is turned A, the operation detection signal level 5 decreases to a low level due to the discharge of the capacitor C (FIG. 5(C)).

When the power switch 3a is pressed 11 to the shaft l-, the signal switch sb is turned off, but the power switch Sa is turned off.
is locked in place and maintains the A state. Therefore, the operation detection signal is J shown in FIG. 5(C);
Becomes a high level.

This pulse-like change in the operation detection signal is given to the control device 4. At the time when the operation detection signal changes into a pulse shape, the power supply voltage is being applied from the power supply circuit 2 to the control device 4, and the control device 4 is in an operating state. Control device 4
detects that the main switch 1 has been operated based on the operation detection signal, outputs a control signal, and turns on the sub switch 5. The power supply circuit 6 for each circuit is connected to the commercial AC power 8! via the sub switch 5 and the main switch 1. i7, and the power supply circuit 6 is supplied with power when the main switch 1 and sub-switch 5 are turned on.
Supply voltage to each circuit.

However, there is a problem in that if the power switch Sa is operated quickly, the one-knob switch 5 may not turn on. Figure 5(d)
indicates the operation detection signal in this case.

Now, it is assumed that the Ichigen switch 3a is operated simply. Then, a short time after the power switch Sa turned on, the signal switch 31) also turned on, and a short time after the signal switch sb turned on, the signal switch Sb turned off. Put it away. Therefore, as shown in FIG. 5(d), the operation detection signal becomes a pulse with a width of d3 after the operation n of the power switch 3a.

On the other hand, after the power switch Sa is turned on and power is supplied to the power supply circuit 2, the power supply voltage supplied to the control device 4 becomes stable and the control device 4 starts operating. It requires ten milliseconds. Therefore, the power switch S
If the operation a is performed in a short time, the pulse of the operation detection signal will be generated earlier than when the control device 4 starts operating, as shown in FIG. 5(d). Therefore, the control device cannot detect pulse-like changes in the operation detection signal, and a control signal cannot be outputted to the one-knob switch 5.

(Problems to be Solved by the Invention) As described above, in the conventional power supply device described above,
Since the control device 4 does not operate for a predetermined period after the main switch 1 is turned on, if the main switch 1 is operated rapidly (,(, the pulse-like change in the operation detection signal is not detected, so the rib There was a problem in that the switch 5 could not be turned on and power supply voltage was not supplied to each circuit.

The present invention has been made to solve these problems, and it is possible to eliminate the need to constantly supply power to the control device, and to operate the main switch regardless of how the main switch is operated.
To provide a power-on device in which a one-knob switch can be reliably turned on by operating a main switch.

[Structure of the Invention] (Means for Solving the Problems) A power-on device according to the present invention includes: a main switch that conducts or cuts off a power supply path; a first power supply device that generates a predetermined power supply voltage; a second power supply device that supplies the power supply voltage to a predetermined circuit; a sub-switch that supplies power to the second power supply device or cuts off the power supply; and a detection device that detects that the main switch is turned on or off and outputs an operation detection signal. and,
A non-volatile storage device stores power supply data that determines the control signal, and a power supply voltage is supplied from the first power supply device to operate the main switch. When detected by the operation detection signal, it controls the storage device and rewrites the power data to turn on the subswipe, and when the main switch is turned on and power supply voltage is supplied from the first power supply equipment. and a control device that reads the power supply data stored in the storage device and outputs the control signal.

(For !1) In the present invention, when the main switch is turned on, the control device outputs a control signal based on power source data stored in the storage device to control the sub-switches. When the main switch is off, regardless of whether the sub switch is on or off, the power data in the storage device is rewritten to turn on the sub switch, so the sub switch is always on when main switch A is operated. becomes.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings. FIG. 1 is a block diagram showing an embodiment of the power supply device k7 according to the present invention. In FIG. 1, the same parts as in FIG. 3 are designated by the same reference numerals.

A main switch 1 is connected between a commercial AC power supply 7 and a power supply circuit 2 for the control device. A main switch 1 and a rib switch 5 are connected between the commercial AC power supply 7 and the power supply circuit 6 for each circuit. The sub switch 5 is turned on and off by a control signal from a control device 8, which will be described later. The configuration of the main switch 1 is the same as that of the conventional one, and includes a power switch Sa and a Shintan switch Sb interlocked with the power switch Sa (see FIG. 4).

10 One end of the power switch Sa is connected to the commercial AC power supply [7]
The other end is connected to the power supply circuit 2. signal switch sb
terminal b is connected to the reference potential point, terminal a is connected to the reference potential point via resistor R2 and capacitor C, and terminal b is connected to the reference potential point via resistor R2 and capacitor C.
2 and the capacitor C are connected to the power supply circuit 2 via a resistor R1. An operation detection signal appears at the connection point between resistor R2 and capacitor C.

The control device 8 operates by being supplied with a power supply voltage from the power supply circuit 2. When the main switch 1 is turned on and the power supply voltage is applied, the control 12Tl device 8 turns on the sub-switch 5, and outputs a control signal to the sub-switch 5 based on the power supply flag of the A control circuit. There is. Further, the control device 8 detects an operation detection signal generated when the main switch 1 is operated and turned off, and keeps the power flag at 1 at all times. The power flag indicates that the sub-switch 5 is on when it is ``1'', and that the sub-switch 5 is off when it is ``○''.The control device 8 is also used to operate a remote control device (not shown) or the like. Furthermore, the control device 8 provides contents such as the power supply flag to the storage device 9.The storage device @9 is constituted by a non-volatile memory,
It is controlled by the control device 8 and stores the contents such as the power supply flag. Note that the storage device 9 is supplied with a power supply voltage from the power supply circuit 2.

Next, the operation of the power supply device configured as shown in FIG. 2 will be explained with reference to the diagram in FIG.

Now, the main switch 1 is already on and the main processing shown in FIG. 2 is being performed.

The control device 8 controls the operation of the entire set in step $10, and detects the human power signal of the slap 311C.

Input signals given to the control device 8 include an operation detection signal from the main switch operation detection device 3 and various signals from a remote control device (not shown). Steps S10 to 8
A loop of 12 indicates a signal standby state, and when a signal input occurs, the process moves from step S12 to step S13.

In step 813, the input signal is
It is determined whether or not it is a state reversal instruction. If it is a state inversion command, the 12 process moves to step 818. Now, if the sub-switch 5 is off (the power flag is 11 0 I+), the power flag is changed to 11 by this state reversal command.
1 Invert to I+. Then, in step S19, the memory write request flag for storing this power supply flag in the storage device 9 is set to LL 1 T1, and then the process moves to step S4.

In step S4, it is determined whether the power supply flag is rr 1 u. In this case, it is "1", so in the next step S5, a control signal is given from the control device 8 and the sub switch 5 is turned on. Conversely, when the sub switch 5 is on, a state reversal command is issued. As soon as the occurrence occurs, it is determined in step S4 that the power flag is 11 0 1+, and the power switch 5 is turned off in the next step S6.In this way, the power key for the sub switch of the remote control device etc. Step 31
3, 818, 819.84, the 1 knob switch 5 is turned on and off at step J-3 at step $5 or step S6.

In the next step S7, it is determined whether or not the memory write request flag 13 is "1". If the memory request flag is changed to ``'1'' and becomes d3, the contents of the power supply flag are stored in the storage device 9 in the next step S8, and the process proceeds to step S.
After setting the 9t-memory write request flag to "O", the process returns to the main process.The contents of the power supply flag stored in the storage device 9 are 11 1 I+ when the sub switch 5 is turned on in step S5. Yes, and when sub switch 5 is turned off in switch S6, it is II O I1.
Immediately after the main switch 1 is turned on from the A position, the process goes through steps $1 to S4, and then goes through step S5 or S6 to step S7, as will be described later. Memory write request flag is ゛O I
1, and the process proceeds to the main processing without rewriting the contents of the power supply flag in the storage device 9.

If it is determined in step 813 that this is not a command to invert the state of the sub-switch 5, the next 14 sub-switches S14 are sent to J3 (it is determined whether or not this is a command to invert the state of the main switch f-1). .If the main switch 1 is not operated, the process returns to step S1.
Set it back to 0 and repeat the same process. When the main switch 1 is operated, it is detected by the operation detection signal from the main switch operation detection device 3 that the main switch 1 is turned off.

Next, in step S15, it is determined whether the sub-switch 5 is on. If the sub switch 5 is on when the main switch 1 is set to A, the process is performed in step S10.
After returning to J0, the loop of steps S10 to S15 is repeated until the power supply voltage drops and the operation of the control device 8 stops.

On the other hand, if the sub switch 5 is off, the content of the power supply flag stored in the storage device 9 is switched to "1" in the next step 81G.
7'C - Set the RAM power flag in the control device 8 to '1'
After rewriting the process, return to step S10. Thereafter, after repeating the loop from steps S10 to 315, the control device 8
operation stops. That is, when the main switch 1 is turned off, the contents of the power supply flag in the storage device 9 become ``1'' regardless of the state of the knob switch 5 when the main switch 1 is turned on.

Note that the control device 18 must continue to operate for about 1 millisecond from when the main switch 1 is operated until the contents of the power flag are changed in step 816.
The fall time of the output of the power supply circuit 2 is relatively long (it can be operated in 1 minute).
Since the power supply flag in M is set to "1", the process proceeds to step S15 via steps S10 to S314.
, the C rewriting is prevented from being performed again in slap S16.

Next, when main switch 1 is switched from A to ON,
The control device 8 first goes to step S1 a-3 to initialize and read various flags. The memory device 9 stores a frame indicating the state of the set when the main switch is turned on, and the control device 8 goes to the next step $2 d3 and stores it in the memory device 9. , is stored in R16 AM (not shown) in the control device 8 in step S3. In the next step S4, the power supply flag is set to I.
It is determined whether I II I+. As mentioned above, when the main switch 1 is turned off, the power flag is set to "1", so the processing is stopped at step S.
5, the sub-switch 5 is turned on. Then,
The process moves to main processing via step S7.

In this way, in this embodiment, when it is detected that the main switch 1 is turned off by the operation detection signal, the control device 8 rewrites the power flag in the storage device 9 to "'1" and then starts the operation. Next, when the main switch 1 is turned on, the control device 8 turns on the sub-switch 5 based on the power flag in the storage device 9.

Therefore, even if the main switch 1 is turned on by quickly operating it, the sub switch 5 can be turned on reliably.

[Effects of the Invention] As explained above, according to the present invention, power is not constantly supplied to the control device, and no matter which direction the main switch 17 is operated. This has the effect of being able to reliably turn on the sub switch even when operating the main switch.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a power-on device according to the present invention, FIG. 2 is a flowchart for explaining the operation of the embodiment, and FIG. 3 is a block diagram showing a conventional power-on device. 4 are explanatory diagrams showing the main switch and the main switch operation detection device, and FIG. 5 is a timing chart for explaining the operation of the conventional example. 1... Main switch, 2, 6... Power supply circuit, 3.
...Main switch operation detection device, 5...Leave switch, 8...Control device, 9...Storage device.

Claims (1)

[Scope of Claims] A main switch that conducts or cuts off a power supply path, a first power supply device that is supplied with power and generates a predetermined power supply voltage when the main switch is conductive, and a first power supply device that supplies power to a predetermined circuit. a second power supply device that supplies voltage; a sub-switch that turns on and off based on a control signal when the main switch is turned on to supply power to the second power supply device or cut off the supply of power; a detection device that detects whether the main switch is turned on or off and outputs an operation detection signal; a nonvolatile storage device that stores power data for determining the control signal; When the power supply voltage is supplied from the power supply device to operate, and the operation detection signal detects that the main switch has been turned off, the main switch is rewritten to control the storage device with power data for turning on the sub-switch. A power supply comprising: a control device that reads power data stored in the storage device and outputs the control signal when a switch is turned on and power supply voltage is supplied from the first power supply device. Insertion device.