[특허]Computer work saving during power interruption

Computer work saving during power interruption 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-011/00 G06F-011/30
출원번호	US-0599098 (1990-10-17)
발명자 / 주소	Brandin Christopher L. (Sedalia CO)
출원인 / 주소	Powercard Supply C.A. (Caracus VEX 03)
인용정보	피인용 횟수 : 42 인용 특허 : 0

초록 ▼

A computer having both volatile and nonvolatile memory, and which is operative in response to a system program and an application program, is protected against an interruption of a primary power source by a momentary introduction of power from a backup source, and by a freezing of data and program instructions in effect at the time of the power interruption. A backup region is designated within the nonvolatile storage medium for receipt of data and instructions present in the nonvolatile memory upon the occurrence of a power interruption. Circuitry is provided for sensing the interruption, the circuitry including the implementation of a computer program which directs cessation of further operation of the application program followed by a transfer of data and instructions from the volatile memory to the nonvolatile memory. This transfer is done under backup power. Thereupon, the backup power is discontinued and the computer is shut down. Subsequently, after resumption of primary power and, upon request of an operator of the computer, the data and the instructions are returned from the nonvolatile memory to the volatile memory, and running of the application program is resumed from the stage at which it had been previously frozen.

대표청구항 ▼

A method of saving work in a computer during an interruption of primary power to the computer, the computer having a central processing unit (CPU) and a memory operatively coupled to the CPU, the memory including an active storage medium and a nonvolatile storage medium, the CPU being operative to produce data under control of a system program and an application program, said active and said nonvolatile storage media being suitable for storing portions of said system program and said application program and said data; the method comprising the steps of: loading up a power-down procedure into the computer upon booting-up of a computer operating system; designating a backup region in said nonvolatile storage medium for receipt of data during power-down; providing a computer work saving system including a backup power source, a sensor, an auxiliary memory and a controller interconnected between said auxiliary memory and said sensor; connecting said saving system to the CPU of the computer; and upon an occurrence of the interruption of primary power to the computer, sensed by the sensor, performing the following steps: storing a powerdown signal indicative of interruption of primary power to the computer in said auxiliary memory; activating the backup power source in response to said signal; running the computer on backup power of said backup power source; terminating a further running of said application program at a program stage in effect at the power-interruption; transferring data, said application program, and contents of all operating memory at said program stage from said active storage medium to said backup region in said nonvolatile storage medium; and disconnecting the backup power from the computer, and wherein, upon resumption of primary power and in response to a manually generated signal to resume operation of the computer, the method comprises further steps of: reading the power-down signal; returning the data and portions of the application program at said program stage from said backup region to said active storage medium; and resuming a running of the application program from said program stage.

이 특허를 인용한 특허 (42)

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Lucas, Gregg S.; Delpapa, Kenneth B.; Ellis, Robert W., Power fail latching based on monitoring multiple power supply voltages in a storage device.
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