JPS5569081A - Time detecting method - Google Patents
Time detecting methodInfo
- Publication number
- JPS5569081A JPS5569081A JP14229978A JP14229978A JPS5569081A JP S5569081 A JPS5569081 A JP S5569081A JP 14229978 A JP14229978 A JP 14229978A JP 14229978 A JP14229978 A JP 14229978A JP S5569081 A JPS5569081 A JP S5569081A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- time
- counter
- flops
- flip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Electromechanical Clocks (AREA)
Abstract
PURPOSE: To achieve accurate time detection by making a decision on correct and incorrect time patterns by measuring the length of the continuation of a received time signal and an interval between signals by a reference signal extracted from the watch circuit of an electronic watch.
CONSTITUTION: A sound signal including a time signal is inputted to input terminal IN and a circuit formed of flip-flops 1 and 2, counter 5 and AND gates 6 and 7, and OR gate 8 decides on whether or not the continuation of the input signal is equivalent to fixed length of a prediction signal. Further, a circuit consisting of counter 9, flip-flops 10, 11 and 12, and gates 13 and 14 measures the intervals of input signals to decide on a time signal pattern. On counting a correct-time signal, counter 17 counts up to output a time correction signal to terminal 18. Therefore, digital decisions are possible and accuate time detection is carried out.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14229978A JPS5569081A (en) | 1978-11-20 | 1978-11-20 | Time detecting method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14229978A JPS5569081A (en) | 1978-11-20 | 1978-11-20 | Time detecting method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5569081A true JPS5569081A (en) | 1980-05-24 |
Family
ID=15312139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14229978A Pending JPS5569081A (en) | 1978-11-20 | 1978-11-20 | Time detecting method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5569081A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5749881A (en) * | 1980-09-09 | 1982-03-24 | Eko Keisokki Kk | Detecting method for first wave of time signal for time standard signal and correction signal generating method employing said detecting method |
JPS58208686A (en) * | 1982-05-28 | 1983-12-05 | Seiko Instr & Electronics Ltd | Electronic time piece |
-
1978
- 1978-11-20 JP JP14229978A patent/JPS5569081A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5749881A (en) * | 1980-09-09 | 1982-03-24 | Eko Keisokki Kk | Detecting method for first wave of time signal for time standard signal and correction signal generating method employing said detecting method |
JPH0214670B2 (en) * | 1980-09-09 | 1990-04-09 | Ekoo Keisokuki Kk | |
JPS58208686A (en) * | 1982-05-28 | 1983-12-05 | Seiko Instr & Electronics Ltd | Electronic time piece |
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