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Patent Searching and Data


Title:
INFORMATION PROCESSOR, INFORMATION PROCESSING SYSTEM AND OPERATING MODE CONTROL METHOD
Document Type and Number:
Japanese Patent JPH09288532
Kind Code:
A
Abstract:

To reduce the cost of a cable for connection by effectively utilizing the signal port of a CPU.

A start bit length control means 4A of a data transmitter 4 compares the start bit length of data to be first transmitted at the time of operation start with an ordinary start bit length and determines a longer start bit length for discrimination, and an operating mode control means 3A of a data receiver 3 detects the start bit of data first transmitted through a data reception line after a change to a low power consumption mode and changes the low power consumption mode to an ordinary operating mode so that the signal port for operating mode control is unnecessitated, the signal port can be used for any other purpose and the signal port can be effectively utilized. Besides, it is not necessary to provide any signal line for operating mode control, the connection cable can be reduced and the costs can be decreased. Further, the data receiver 3 is turned to stable operating state during the output of the start bit for discrimination and the operating mode can be surely changed.


Inventors:
Shimizu, Shinichiro
Application Number:
JP1996000098697
Publication Date:
November 04, 1997
Filing Date:
April 19, 1996
Export Citation:
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Assignee:
YAZAKI CORP
International Classes:
G07B13/00; G06F1/32; G06F3/00; (IPC1-7): G06F1/32; G06F3/00; G07B13/00
Attorney, Agent or Firm:
瀧野 秀雄 (外1名)