JPS5548678A - Automatic time correction device - Google Patents
Automatic time correction deviceInfo
- Publication number
- JPS5548678A JPS5548678A JP12224878A JP12224878A JPS5548678A JP S5548678 A JPS5548678 A JP S5548678A JP 12224878 A JP12224878 A JP 12224878A JP 12224878 A JP12224878 A JP 12224878A JP S5548678 A JPS5548678 A JP S5548678A
- Authority
- JP
- Japan
- Prior art keywords
- time
- signal
- gain
- loss
- circuit
- 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
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
- G04R20/14—Setting the time according to the time information carried or implied by the radio signal the radio signal being a telecommunication standard signal, e.g. GSM, UMTS or 3G
Abstract
PURPOSE:To ensure an automatic time correction by having a comparison between the reference time signal detected from the ''117'' time signal service signal and the time signal given from the watch to indicate the time and then using the gain or loss signal according to the error time. CONSTITUTION:The time serivce signal obtained from the public telephone circuit is set to the level within the fixed range via level adjustment circuit 2 in order to detect second tone (a), forecast tone (b) and time signal tone (c) each. Based on the logic product of these detection tones, reference time detection circuit 6 detects the reference time signals every 30 seconds. Compared time detection circuit 7 supplies the time signal sent from counter 13 of the watch to detect the compared time signals every 00 second and 30 seconds. These detection signals are applied to error detection circuit 8 for comparison to decide the gain or loss of the watch, and the gain or loss signal is delivered from addition/subtraction counter circuit 9 in accordance with the error time. With this gain or loss signal the counting speed of counter 13 is controlled continuously to perform the continuous correction for the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12224878A JPS5548678A (en) | 1978-10-03 | 1978-10-03 | Automatic time correction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12224878A JPS5548678A (en) | 1978-10-03 | 1978-10-03 | Automatic time correction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5548678A true JPS5548678A (en) | 1980-04-07 |
Family
ID=14831253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12224878A Pending JPS5548678A (en) | 1978-10-03 | 1978-10-03 | Automatic time correction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5548678A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57147783U (en) * | 1981-03-13 | 1982-09-17 | ||
| JPS582779A (en) * | 1981-06-30 | 1983-01-08 | Nec Corp | Time correcting device |
| JPS59174784A (en) * | 1983-03-25 | 1984-10-03 | Nec Corp | Time apparatus |
| JPS59174783A (en) * | 1983-03-25 | 1984-10-03 | Nec Corp | Time apparatus |
| JPS61149891A (en) * | 1984-12-24 | 1986-07-08 | Nec Corp | Time device |
| JP2007271522A (en) * | 2006-03-31 | 2007-10-18 | Rhythm Watch Co Ltd | Automatically corrected timepiece |
-
1978
- 1978-10-03 JP JP12224878A patent/JPS5548678A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57147783U (en) * | 1981-03-13 | 1982-09-17 | ||
| JPS582779A (en) * | 1981-06-30 | 1983-01-08 | Nec Corp | Time correcting device |
| JPS6237354B2 (en) * | 1981-06-30 | 1987-08-12 | Nippon Electric Co | |
| JPS59174784A (en) * | 1983-03-25 | 1984-10-03 | Nec Corp | Time apparatus |
| JPS59174783A (en) * | 1983-03-25 | 1984-10-03 | Nec Corp | Time apparatus |
| JPS61149891A (en) * | 1984-12-24 | 1986-07-08 | Nec Corp | Time device |
| JP2007271522A (en) * | 2006-03-31 | 2007-10-18 | Rhythm Watch Co Ltd | Automatically corrected timepiece |
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