Title:
COUNTING METHOD FOR TIMER COUNTER
Document Type and Number:
Japanese Patent JP2984591
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To shorten timer count processing, which is to be performed at time-up, and to attain the application of software timer to the system of severe control timing in the case of counting the software timer to use the built-in timer of microcomputer as a reference timer.
SOLUTION: Concerning one software timer 10, a counter 11, a time-up flag 12 and count permission flag 13 to the high-order bits of this counter 11 are assigned. By turning this software timer 10 to '-1' based on a processing step, the overflow flag of counter 11 is utilized as the time-up flag 12 and by performing setting of count permission flag 13, time-count processing at time-up is shortened.
Inventors:
AKEDA SATOKO
Application Number:
JP31125795A
Publication Date:
November 29, 1999
Filing Date:
November 29, 1995
Export Citation:
Assignee:
NIPPON DENKI AISHII MAIKON SHISUTEMU KK
International Classes:
H03K21/00; (IPC1-7): H03K21/00
Domestic Patent References:
| JP58207124A | ||||
| JP60251721A |
Attorney, Agent or Firm:
Naoki Kyomoto (2 outside)