JPS5471666A - Electronic watch - Google Patents
Electronic watchInfo
- Publication number
- JPS5471666A JPS5471666A JP13872977A JP13872977A JPS5471666A JP S5471666 A JPS5471666 A JP S5471666A JP 13872977 A JP13872977 A JP 13872977A JP 13872977 A JP13872977 A JP 13872977A JP S5471666 A JPS5471666 A JP S5471666A
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic wave
- signal
- sound
- alarm
- gate
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G13/00—Producing acoustic time signals
-
- 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
- G04G13/028—Producing acoustic time signals at preselected times, e.g. alarm clocks combined with a radio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13872977A JPS5471666A (en) | 1977-11-18 | 1977-11-18 | Electronic watch |
GB7842683A GB2008814B (en) | 1977-11-18 | 1978-10-31 | Electronic timepiece |
US05/961,744 US4216647A (en) | 1977-11-18 | 1978-11-17 | Electronic timepiece |
CH1187378A CH635222B (fr) | 1977-11-18 | 1978-11-20 | Piece d'horlogerie electronique, notamment montre-bracelet electronique, munie d'un dispositif d'alarme. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13872977A JPS5471666A (en) | 1977-11-18 | 1977-11-18 | Electronic watch |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5471666A true JPS5471666A (en) | 1979-06-08 |
JPS5760594B2 JPS5760594B2 (ja) | 1982-12-20 |
Family
ID=15228784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13872977A Granted JPS5471666A (en) | 1977-11-18 | 1977-11-18 | Electronic watch |
Country Status (4)
Country | Link |
---|---|
US (1) | US4216647A (ja) |
JP (1) | JPS5471666A (ja) |
CH (1) | CH635222B (ja) |
GB (1) | GB2008814B (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55116291A (en) * | 1979-02-28 | 1980-09-06 | Seiko Epson Corp | Electronic wrist watch with alarm |
US4316273A (en) * | 1980-03-17 | 1982-02-16 | Jetter Milton W | Remote-controlled alarm clock |
GB2127245A (en) * | 1982-11-25 | 1984-04-04 | Mark Ford Newman | Apparatus for broadcasting and/ or recording a weather forecast |
CN108777139A (zh) * | 2018-04-08 | 2018-11-09 | 杭州电子科技大学 | 一种声音定向传播的闹钟 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2580447A (en) * | 1947-03-21 | 1952-01-01 | Samuel G Lutz | Time recording system |
US4063410A (en) * | 1976-03-01 | 1977-12-20 | Welling Gregory J | Digital watch including a signal transmitter |
US4144706A (en) * | 1977-01-21 | 1979-03-20 | Timex Corporation | Alarm watch with remote sonic generator |
US4093944A (en) * | 1977-02-16 | 1978-06-06 | Muncheryan Hrand M | Silent awakening system with means adapted to induce sleep |
-
1977
- 1977-11-18 JP JP13872977A patent/JPS5471666A/ja active Granted
-
1978
- 1978-10-31 GB GB7842683A patent/GB2008814B/en not_active Expired
- 1978-11-17 US US05/961,744 patent/US4216647A/en not_active Expired - Lifetime
- 1978-11-20 CH CH1187378A patent/CH635222B/fr unknown
Also Published As
Publication number | Publication date |
---|---|
US4216647A (en) | 1980-08-12 |
GB2008814A (en) | 1979-06-06 |
GB2008814B (en) | 1982-05-26 |
JPS5760594B2 (ja) | 1982-12-20 |
CH635222GA3 (ja) | 1983-03-31 |
CH635222B (fr) |
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