Setup of the time/date within the CMOS real-time-clock

Details Setup of the time/date within the CMOS real-time-clock Setup of the time/date within the CMOS real-time-clock

1998-07-30

2000-07-04

Palys, Joseph E.

Electrical computers and digital processing systems: support

Synchronization of clock or timing signals, data, or pulses

G06F 108

Patent

active

06085331&

ABSTRACT:
An apparatus for setting up a time/date of a CMOS real-time-clock within a computer system is disclosed. The computer system includes a processor, a memory, an I/O controller and a first parallel port interface. The apparatus uses the first parallel port within the system to set up the CMOS real-time-clock. The apparatus includes a reference real-time-clock for storing a reference date/time, a second parallel port interface connected to the first parallel port interface. The second parallel port interface is connected to the reference real-time-clock through a signal line. The computer system, responsive to a set-up instruction, reads the reference date/time from the reference real-time-clock and writes the reference date/time, via the I/O controller, into the CMOS real-time-clock of the computer system.

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patent: 4575848 (1986-03-01), Moore et al.
patent: 5214760 (1993-05-01), Hammond et al.
patent: 5535261 (1996-07-01), Brown et al.
patent: 5572716 (1996-11-01), Meisner
patent: 5978925 (1999-11-01), Shiraishi et al.

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