Method for compensating time in transmitting unit and transmitti

Details Method for compensating time in transmitting unit and transmitti Method for compensating time in transmitting unit and transmitti

1995-08-17

1997-12-30

Butler, Dennis M.

39520019, 395553, 395557, G06F 114

Patent

active

057040303

ABSTRACT:
A CPUA with a master clock sends a communication time count command to a CPUB whose time is to be compensated. In addition, the CPUA starts a timer. When the CPUA receives a reply to the communication time count command from the CPUB, the CPUA subtracts a predetermined time t that is from when the CPUB receives the communication count command until it sends a reply thereto from a count time T of the timer, so as to calculate the actual communication time between the CPUs. The CPUA notifies the CPUB whose time is to be compensated of the inter-CPU communication time and the time information counted according to the master clock. The CPUB compensates the time information counted by its internal clock according to the inter-CPU communication time and the time information received from the CPUA.

REFERENCES:
patent: 4531185 (1985-07-01), Halpern et al.
patent: 4815110 (1989-03-01), Benson et al.
patent: 5504878 (1996-04-01), Coscarella et al.

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