Title:
REAL TIME CLOCK AND DATA RECORDING METHOD OF REAL TIME CLOCK
Document Type and Number:
Japanese Patent JP2013152733
Kind Code:
A
Abstract:
To provide a real time clock which improves reliability of stored event data.
The real time clock 10 comprises: an event detection circuit 20 which detects that event detection signals are input from the outside; a time measuring circuit 18 which generates time data on the basis of signals output from an oscillation circuit 16; a memory 40; and a control circuit 42 which records event data to the memory 40 when input of the event detection signals is detected by the event detection circuit 20, where the event data has additional data, which indicate an operational condition of the real time clock 10, and the time data generated by the time measuring circuit 18.
Inventors:
SHIRATORI TORU
USUDA TOSHIYA
USUDA TOSHIYA
Application Number:
JP2013046784A
Publication Date:
August 08, 2013
Filing Date:
March 08, 2013
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
G06F11/34; G01D9/00; G04G3/00; G06F1/14; G06F1/28; G06F11/30
Domestic Patent References:
| JP2003132470A | 2003-05-09 | |||
| JPS6474684A | 1989-03-20 | |||
| JP2001228932A | 2001-08-24 | |||
| JP2009048614A | 2009-03-05 | |||
| JP2003132470A | 2003-05-09 | |||
| JPS6474684A | 1989-03-20 | |||
| JP2001228932A | 2001-08-24 |
Other References:
JPN6012053494; 'ＤＳ１６７８ Ｒｅａｌ-Ｔｉｍｅ Ｅｖｅｎｔ Ｒｅｃｏｒｄｅｒ' ｄａｔａｓｈｅｅｔ , 2005, ｐ．１-２５, Ｍａｘｉｍ Ｉｎｔｅｇｒａｔｅｄ Ｐｒｏｄｕｃｔｓ
JPN6012053494; 'ＤＳ１６７８ Ｒｅａｌ-Ｔｉｍｅ Ｅｖｅｎｔ Ｒｅｃｏｒｄｅｒ' ｄａｔａｓｈｅｅｔ , 2005, ｐ．１-２５, Ｍａｘｉｍ Ｉｎｔｅｇｒａｔｅｄ Ｐｒｏｄｕｃｔｓ
JPN6012053494; 'ＤＳ１６７８ Ｒｅａｌ-Ｔｉｍｅ Ｅｖｅｎｔ Ｒｅｃｏｒｄｅｒ' ｄａｔａｓｈｅｅｔ , 2005, ｐ．１-２５, Ｍａｘｉｍ Ｉｎｔｅｇｒａｔｅｄ Ｐｒｏｄｕｃｔｓ
Attorney, Agent or Firm:
Masahiko Ueyanagi
Kazuhiko Miyasaka
Kazuaki Watanabe
Kazuhiko Miyasaka
Kazuaki Watanabe
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