Battery powered computer system wherein a power supply is selectively shut off when a low battery power is detected
Portable computer having a battery voltage detecting circuit
Suspend/resume apparatus and method for reducing power consumption in battery powered computers
Microcomputer which enters sleep mode for a predetermined period of time on response to an activity of an input/output device
Integrated circuit with watchdog timer and sleep control logic which places IC and watchdog timer into sleep mode
Notebook computer CMOS firmware processing method and the related hardware Patent #: 5283906
ApplicationNo. 080531 filed on 06/24/1993
US Classes:713/321Programmable calculator with power saving feature
ExaminersPrimary: Malzahn, David H.
Attorney, Agent or Firm
International ClassG06F 001/32
Foreign Application Priority Data1992-06-26 JP
AbstractA system for reducing power consumption in a battery powered terminal device is provided. The device includes a keyboard for inputting data to the terminal device. A processor is arranged for processing the data input by the keyboard. A System program suspends operation of the terminal when the data is not inputted by the keyboard. A Battery supplies power to the terminal device components. A timer is provided for counting a predetermined number of clock cycles from when the processor is suspended, and generating an interrupt signal to activate the processor when the predetermined number of clock cycles has elapsed. The system program generates data indicative of a battery power failure when the battery power drops below a certain value after the processor is activated by the timer. A switch suspends the battery power supply of the battery when the data is generated by the system program.