GB1391396A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- GB1391396A GB1391396A GB1206573A GB1206573A GB1391396A GB 1391396 A GB1391396 A GB 1391396A GB 1206573 A GB1206573 A GB 1206573A GB 1206573 A GB1206573 A GB 1206573A GB 1391396 A GB1391396 A GB 1391396A
- Authority
- GB
- United Kingdom
- Prior art keywords
- counter
- date
- gates
- decoder
- demand
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G9/00—Visual time or date indication means
- G04G9/08—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques
- G04G9/087—Visual time or date indication means by building-up characters using a combination of indicating elements, e.g. by using multiplexing techniques provided with means for displaying at will a time indication or a date or a part thereof
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
Abstract
1391396 Electronic watches CASIO COMPUTER CO Ltd 13 March 1973 [15 March 1972] 12065/73 Heading G3T An electronic watch having a digital numeric display is arranged to indicate the date on demand, using the same display elements as are used to indicate the time on demand. In Fig.2, a pulse generator 19 including a quartz crystal controlled oscillator feeds timing pulses at 1 Hz to a seconds counter 20 which produces a 1 minute carry signal every sixty pulses. The carry signals are fed to a minute counter 21 the content of which is applied to a digital display via AND gates 24, OR gates 25, a decoder 22 and a driver 18. Every sixty minutes the counter 21 sends a carry signal to an hours counter 23 the content of which is decoded at 26 and applied to the display via a driver 27. Carry signals from the hours counter 23 are fed to a binary counter 28 which produces a carry signal every 24 hours to a 31-step date counter 30 via an OR gate 29. When a date demand switch button is depressed, AND gates 31 pass the outputs of date counter 30 via the OR gates 25 to the decoder 22. At the same time the output from a NOT circuit 33 is blocked so that AND gates 24 are blocked and hence also the minutes signals from counter 21 to the decoder 22. Date indication is therefore displayed on the minute indicator (15) Fig.1 (not shown). Alternatively the date indication may be displayed on the hour indicator (14) Fig.1. The date indication may be advanced irrespective of the output from the binary counter 28, by operation of a date advancing button switch 34 which advances the count of the 31-step counter.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP47026382A JPS4895268A (en) | 1972-03-15 | 1972-03-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1391396A true GB1391396A (en) | 1975-04-23 |
Family
ID=12191960
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1206573A Expired GB1391396A (en) | 1972-03-15 | 1973-03-13 | Electronic watch |
Country Status (7)
Country | Link |
---|---|
US (1) | US3855780A (en) |
JP (1) | JPS4895268A (en) |
CA (1) | CA992751A (en) |
CH (1) | CH381073A4 (en) |
DE (1) | DE2312739C3 (en) |
FR (1) | FR2175966B1 (en) |
GB (1) | GB1391396A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50142078A (en) * | 1974-05-01 | 1975-11-15 | ||
BR7606135A (en) * | 1975-09-17 | 1977-06-14 | Singer Co | SEWING MACHINE STANDARD SELECTION SYSTEM |
JPS52125368A (en) * | 1976-04-13 | 1977-10-21 | Casio Comput Co Ltd | Electronic watch |
JPS601435Y2 (en) * | 1977-08-25 | 1985-01-16 | ナイルス部品株式会社 | Abnormality display device using the digital display section of an electronic clock |
JPS5749831Y2 (en) * | 1978-03-10 | 1982-11-01 | ||
JPS5623487U (en) * | 1979-07-31 | 1981-03-03 | ||
JPS57111497A (en) * | 1980-12-29 | 1982-07-10 | Fujitsu Ltd | Time display system |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH569320B5 (en) * | 1970-03-06 | 1975-11-14 | Rolex Montres | |
US3672155A (en) * | 1970-05-06 | 1972-06-27 | Hamilton Watch Co | Solid state watch |
US3760584A (en) * | 1971-04-29 | 1973-09-25 | Hamilton Watch Co | Integrated circuit solid state watch |
-
1972
- 1972-03-15 JP JP47026382A patent/JPS4895268A/ja active Pending
-
1973
- 1973-03-13 CA CA166,304A patent/CA992751A/en not_active Expired
- 1973-03-13 FR FR7308872A patent/FR2175966B1/fr not_active Expired
- 1973-03-13 GB GB1206573A patent/GB1391396A/en not_active Expired
- 1973-03-14 DE DE2312739A patent/DE2312739C3/en not_active Expired
- 1973-03-15 CH CH381073D patent/CH381073A4/en not_active Application Discontinuation
- 1973-03-15 US US00341585A patent/US3855780A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE2312739A1 (en) | 1973-09-27 |
FR2175966A1 (en) | 1973-10-26 |
JPS4895268A (en) | 1973-12-06 |
CH381073A4 (en) | 1975-06-30 |
DE2312739C3 (en) | 1979-11-29 |
DE2312739B2 (en) | 1975-03-06 |
FR2175966B1 (en) | 1976-09-10 |
US3855780A (en) | 1974-12-24 |
CA992751A (en) | 1976-07-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19930312 |