JPH04140814A - Panel switch for computer - Google Patents

Abstract

PURPOSE:To eliminate the need of an exclusive switch for power source turn-off, and also, to prevent the power source from being turned off simply by an operator's misoperation by providing a first switch for power source turn-on, a second switch for actuating a specific operation except power source turn-off at the time of a state of power source turn-on and a deciding means. CONSTITUTION:A deciding means 103 discriminates a turn-on state of a power-on switch 101 and a damp switch 102, and when a state of poer source is turned off, and 101 is turned on, a turn-on signal for setting a power source 104 to a turn-on state is outputted to 104. Also, in the case of a state of power source is turned on, and 101 is turned off, and also, 102 is turned on, a damp signal for actuating a diagnostic program is outputted to a logical part 105, and when 101 is turned on, and also, 102 is turned on, a turn-off signal for setting the power source 104 to a turn-off state is outputted to 104. When a turn-on signal is inputted from the means 103, the power source 104 supplies a current to the logical part 105, and when a turn-off signal is inputted, the current is cut off to 105. In such a way, an exclusive switch for power source turn-off becomes unnecessary, and also, it can be prevented that the power source is turned off simply by an operator's misoperation.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a computer panel switch.

[, Conventional technology]

Traditionally, this type of computer's panel switches were made up of switches that performed individual functions by pressing individual switches. power-on switch), switch (power-off switch) for forcibly turning the power off from the power-on state, switch (dump switch) for switching to diagnostic mode when the system becomes abnormal ), multiple switches such as a reset switch for initializing the system were placed on the panel for operator operation.

[Problem to be solved by the invention]

The conventional computer panel switches mentioned above perform only specific operations independently, so many switches must be placed on the panel, which requires an increase in the number of panel switches and the number of operators. There are drawbacks such as system destruction due to incorrect operation.

[Means to solve the problem]

The computer panel switch of the present invention includes a first switch for turning on the power from a power-off state, a second switch for starting a specific operation other than turning off the power when the power is on, and the second switch for starting a specific operation other than turning off the power when the power is on. The on state of the first switch and the second switch is determined, and if the first switch is on when the power is off, the power is turned on, and when the power is on and only the second switch is on, the power is turned on. To start the operation, the first
and determining means for controlling the power to be turned off when the switch is on and the second switch is on.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

101 is a power-on switch for turning on the power from the off state, and 102 is a dump switch for starting a diagnostic program when the system is in an abnormal state while the power is off. 101,1
02 is a momentary type switch that turns on only when the operator presses the button and turns off when the button is released.

The determining means 103 determines whether the power on switch 101 and the dump switch 102 are on, and when the power is off and 101 is turned on, it outputs an on signal to turn on the power 104 to turn on the power. When the state of
When 101 is off and 102 is on, logic section 105
When 101 is on and 102 is on, an off signal for turning off the power supply 104 is output to 104.

The power supply 104 supplies current to the logic section 105 when an on signal is input from the determination means 103, and cuts off the current to the logic section 105 when an off signal is input from the determination means 103.

FIG. 2 is an internal block diagram illustrating details of the determination means 103 and power supply 104 shown in FIG.

The power supply 104 has a primary system AC input 201 and a secondary system AC output 2.
02. Standby AC output 203. It consists of a standby system rectifier 204, a secondary system rectifier 205, and a relay 206 for controlling the secondary system power supply, and a DC output 208 is supplied to the logic unit 105 in FIG.

The DC output 209 of the standby system rectifier 204 always supplies power to operate the relay 206 even when the power is off. When the power-on switch 101 is turned on, the determining means 103 turns on the on-signal 210 to the power source (short-circuiting).

Furthermore, when the dump switch 102 is turned on, the dump signal 212 to the logic section is turned on. Furthermore, when both the on switch 101 and the dump switch 102 are turned on, the off signal 211 to the power supply is turned on (short circuit).

The relay 206 of the power supply 104 is off when the power is off, and turns on in response to the on signal 210 output from the determining means 103. - Once turned on, it remains on until it receives the off signal 211 output from the determining means 103, and is turned off by the off signal to turn off the power.

〔Effect of the invention〕

As explained above, the present invention includes a first switch for turning on the power from a power-off state, a second switch for starting a specific operation other than power-off when the power is on, and a first switch. and determining means for determining the on state of the second switch, and when the power is on, if the first switch is on and the second switch is on, the power source is turned off. This eliminates the need for a separate switch exclusively for turning off the power, and since the power will not turn off unless both switches are turned on at the same time, this has the effect of preventing the power from easily turning off due to operator error. .

[Brief explanation of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention.
FIG. 3 is a block diagram showing details of the determination means and power supply shown in the figure. 101... Power-on switch, 102... Dump switch, 103... Judgment means, 104... Power supply, 105... Logic section.

Claims (1)

[Claims] In a computer panel switch operated by an operator to control power on/off of a computer system, there is a first switch for turning the power on from the power off state, and a specific switch other than power off when the power is on. A second switch for starting the operation, and a second switch that determines the on state of the first switch and the second switch and switches the first switch in the power off state.
When the switch is on, it turns on the power, when the power is on and only the second switch is on, it starts a specific operation other than turning off the power, when the first switch is on and the second switch is on. A panel switch for a computer, comprising: determination means for controlling power off.