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Apparatus-and-method-for-suspending-and-resuming-software-application-on-a-computer

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Apparatus and method for suspending and resuming software application on a computer

Details

Inventors: Morita, Mitsuaki; Miyazaki, Masaya; Enoki, Nobuyuki; Takuma, Akira;
Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JP)
Primary Examiner: Sheikh; Ayaz R.
Assistant Examiner:
Attorney, Agent or Firm: Price, Gess & Ubell

The control unit of a computer system comprises a first storing device for holding written data while the power is on, a second storing device for holding the written data, even when the power is off and a power-off preserving device for terminating power to the system after transferring the data held in the first storing device to the second storing device. The control system can be utilized to only store the effective contents of the operating data to thereby enable data reconstruction upon resumption of power. The control device can interface with a window system processing device which can enable the refreshing of graphic display information upon resumption of power. The second storing device may have limited memory capacity and the operator can be informed of its capacity prior to a final shut-off of power. The control unit can further identify those programs that are not capable of being restored to their original condition and accordingly canceling any program execution when such a condition is judged.

DETAILED DESCRIPTION The present invention has an object to provide a method and an apparatus employing a Storing device with a reduced capacity in which data necessary to resume a software application before powering off a computer system are stored.
The above object is fulfilled by a control unit of a computer system comprising a first storing device for holding written data while the power is on, a second storing device for holding the written data even when the power is off, and a power-off preserving device for powering off the system after transferring the data held in the first storing device to the second storing device.
The control unit may further comprise a window system processing device for refreshing the graphic display by producing the graphic display data based on the original data for the graphic display, a power-on resuming device for returning the data held in the second storing device to the first storing device, and a refresh requesting device for requesting the window system processing device to refresh graphic display after the data has returned to the first storing device.
The above object is also fulfilled by a method of controlling a computer system comprising the steps of powering off the system after transferring the data held in the first storing device for holding written data while the power is on to the second storing device for holding the written data even when the power is off, refreshing the graphic display by producing the graphic display data based on the original data for the graphic display, returning the data held in the second storing device to the first storing device, requesting the window system processing device to refresh graphic display after the data has been returned to the first storing device.
Above construction makes it possible to resume the graphic display data based on original data stored in the second storing device so that transmission of the graphic display data to the second storing device becomes unnecessary, thereby reducing the capacity thereof

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