GB1524130A - Digital multi-alarm watch - Google Patents
Digital multi-alarm watchInfo
- Publication number
- GB1524130A GB1524130A GB4195176A GB4195176A GB1524130A GB 1524130 A GB1524130 A GB 1524130A GB 4195176 A GB4195176 A GB 4195176A GB 4195176 A GB4195176 A GB 4195176A GB 1524130 A GB1524130 A GB 1524130A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alarm
- contents
- circuit
- seconds
- counter
- 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
- G04G13/00—Producing acoustic time signals
- G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
- G04G13/026—Producing acoustic time signals at preselected times, e.g. alarm clocks acting at a number of different times
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
- Electronic Switches (AREA)
Abstract
1524130 Electronic alarm timepieces DAINI SEIKOSHA KK 8 Oct 1976 [13 Oct 1975] 41951/76 Heading G3T An electronic digital watch has facility for presetting a plurality of alarm times. In Fig. 1, the watch includes an oscillator and frequency divider circuit 1 to provide timekeeping signals which step seconds and minutes counters 2, 3. The minutes components of alarm times are pre-set in respective memory channels 5, 6 and 7 by a setting circuit 4, Similar pre-setting arrangements (not shown) are provided for hours and seconds. The memorized data is coupled by a switching circuit 16 via a decoder 17 to indicate alarm times on a digital display 18. A ring counter 15 is driven by clockpulses (e.g. between 2Hz and 256Hz) from the frequency divider in circuit 1. The successively occurring logic "1" outputs of ring counter 15 open AND gates 8a to 8c successively and pass the contents of the memory channels 5, 6, 7 through OR gate 9. First the contents of channel 5 are compared in EX OR gate 10, with the contents of minutes counter 3. Upon coincidence a flip-flop 12 is set and an audible alarm 14 is activated. At the end of a predetermined period, a pulse from seconds counter 2 resets the flip-flop 12 thereby terminating the alarm. In a similar manner the alarm is activated at the times pre-set in channels 6, 7.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12301175A JPS5246864A (en) | 1975-10-13 | 1975-10-13 | Digital multi-alarm clock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1524130A true GB1524130A (en) | 1978-09-06 |
Family
ID=14850024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4195176A Expired GB1524130A (en) | 1975-10-13 | 1976-10-08 | Digital multi-alarm watch |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5246864A (en) |
| GB (1) | GB1524130A (en) |
| HK (1) | HK6482A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52111554U (en) * | 1976-02-18 | 1977-08-24 | ||
| JPS5441770A (en) * | 1977-09-09 | 1979-04-03 | Hitachi Ltd | Alarm coincidence detection circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51104293A (en) * | 1975-03-11 | 1976-09-14 | Toyo Jihoki Mfg |
-
1975
- 1975-10-13 JP JP12301175A patent/JPS5246864A/en active Granted
-
1976
- 1976-10-08 GB GB4195176A patent/GB1524130A/en not_active Expired
-
1982
- 1982-02-18 HK HK6482A patent/HK6482A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| HK6482A (en) | 1982-02-26 |
| JPS576074B2 (en) | 1982-02-03 |
| JPS5246864A (en) | 1977-04-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19921008 |