JPS62217314A - Power supply system for i/o slot - Google Patents

Abstract

PURPOSE:To improve the availability of electric power by providing a switch means which can be turned on and off by a direct program received from a computer main body to a power supply wiring. CONSTITUTION:The lead relays 21-24 are provided at the joint parts of I/O slots 11-14 of a power supply wiring P and turned on and off through signal lines CNT1-4 under the control of a program received from a main body control part 1. Thus the slots 11-14 can turn on and off a power supply independently of each other. Therefore the reduction of power consumption is possible by turning off the power supply of an I/O slot to which an inactive option card is inserted among those slots 11-14. Furthermore it is not required to pull out the inserted option card owing to a level higher than the rated electric power.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is an I/O device that supplies full power to an I/O slot into which an option card of a personal computer or the like is inserted.
0 Related to Slot Power Supply [Prior Art] Conventionally, power was supplied to an I/O slot into which an option card of a personal computer is inserted, using the same power supply cable or printed circuit board pattern as the personal computer itself. The power supply to the option card depended only on the operator's opening/closing of the power switch. , the connection line SG and power supply wiring P of the main body control unit 1 of the personal computer (DC 5V, ±12V
) are connected to the I/O slots 11 to 14.

[Problem that the invention seeks to solve]

The above-mentioned conventional I/O slot power supply
Regardless of the function of the option card inserted in the O slot, power is supplied when the operator turns on the power switch, so even if an option card that is not involved in any operation is inserted, power is not supplied unconditionally. has the disadvantage that it consumes extra power.

In other words, in the conventional I/O slot power supply system shown in FIG. Therefore, when a card is inserted in I/O slots 11 to 14, even if the card is not in use, there is no mechanism to cut off the power supply, so power continues to be supplied to the card, and unnecessary It was consuming all the electricity.

Recent personal computer computers have expanded their functions, and include a local CPU (CE) on the option card.
ntral Processing Unit )i
There are many implementations, especially this kind of local CPU.
'(+- cards consume a large amount of power, but from the perspective of the overall operation of the personal computer, the actual working time does not account for that much weight. Therefore, the L7c local CPU inserted into the I/O slot?!-
Due to the short operating time of the card, it may become impossible to insert other useful optional cards into the I/O slot due to the power consumption limitations of the entire personal computer. The I/O slot power supply system of the present invention is controlled by a computer main body, an I/O slot into which an option card is inserted, and the computer main body, and the power supply of the computer main body and the VO slot are connected. Between the power supply &! It is composed of an opening/closing means for fully connecting and disconnecting.

〔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.

In this embodiment, the I/O slots 11 to 14 of the power supply wiring P are
Reed relays 21 to 24 are provided at the connection parts of.

The signal line CV T is controlled by the program from the main body control unit 1.
,~CHT 4k through lead L/-21~2
4 By fully opening and closing each I/O slot 11 to 14
It becomes possible to completely turn off the power to the n-ert independently. Therefore, I/O slots 11 to 1 in FIG.
Out of 4, power consumption can be reduced by turning off the power of the I/O slot in which an inactive option card is inserted.

In addition, since option cards are fully installed in I/O slots 11 to 14, the capacity of the power supply (rated power of the device)
In cases where the value exceeds @r%, in the conventional method it was necessary to remove any one (or two or more) option cards from the I/O slot, but in this embodiment, instead of removing all option cards, In order to disconnect the power supply to all the reed relays 21 to 24 for the option card that must be removed, some of the reed relays 21 to 24 are turned off using a program executed by the main body control section 1. This eliminates the need to remove all option cards.

〔Effect of the invention〕

In accordance with the above-described method, the present invention is designed to provide a power supply wiring that supplies power to the I/O slots of the computer with an opening/closing means that can be controlled on and off directly from the computer main body, and for each I/O slot. It is now possible to turn on and off the power of option cards inserted in the e+ slot, eliminating the overload condition of the device that occurs when all option cards that consume a large amount of power are inserted into the I/O slot at the same time. This reduces power consumption, eliminates the need to remove an option card from the I/O slot when the rated power has been exceeded, and efficiently uses power by supplying full power only to the operating option card. This has the effect of making it possible.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional I/O slot power supply system. 1... Main body control section, 11-14...I
/O slot, 21-24...Reed relay. 6 one arrow twice

Claims (1)

[Claims] I where the computer main body and option card are inserted
an I/O slot, and an opening/closing means that is controlled by the computer main body and connects or disconnects a power supply wiring that connects the power supply of the computer main body and the I/O slot. Power supply method.