JPS5412005B2 - - Google Patents
Info
- Publication number
- JPS5412005B2 JPS5412005B2 JP670773A JP670773A JPS5412005B2 JP S5412005 B2 JPS5412005 B2 JP S5412005B2 JP 670773 A JP670773 A JP 670773A JP 670773 A JP670773 A JP 670773A JP S5412005 B2 JPS5412005 B2 JP S5412005B2
- Authority
- JP
- Japan
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
- H03G3/344—Muting responsive to the amount of noise (noise squelch)
Landscapes
- Noise Elimination (AREA)
- Transceivers (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21810772A | 1972-01-17 | 1972-01-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4883711A JPS4883711A (ja) | 1973-11-08 |
| JPS5412005B2 true JPS5412005B2 (ja) | 1979-05-19 |
Family
ID=22813776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP670773A Expired JPS5412005B2 (ja) | 1972-01-17 | 1973-01-16 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3758860A (ja) |
| JP (1) | JPS5412005B2 (ja) |
| CA (1) | CA997829A (ja) |
| DE (1) | DE2302229C3 (ja) |
| FR (1) | FR2168454B1 (ja) |
| GB (1) | GB1366471A (ja) |
| IL (1) | IL41304A (ja) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3846794A (en) * | 1973-03-15 | 1974-11-05 | Baker Ind Inc | Alarm retransmission system |
| US3927376A (en) * | 1974-12-23 | 1975-12-16 | Rca Corp | Speaker muting system |
| JPS605649Y2 (ja) * | 1976-09-16 | 1985-02-21 | 株式会社福井村田製作所 | 送受信装置 |
| US4233565A (en) * | 1979-06-29 | 1980-11-11 | Motorola, Inc. | Method and apparatus for a PSK signal detector |
| US4342120A (en) * | 1980-11-10 | 1982-07-27 | The Bendix Corporation | Squelch system for use in a multiple carrier AM communications systems receiver |
| US4430742A (en) | 1981-11-20 | 1984-02-07 | Motorola, Inc. | Data muting method and apparatus for radio communications systems |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3496467A (en) * | 1967-10-13 | 1970-02-17 | Motorola Inc | Automatic tone coded squelch circuit for radio communication system |
| JPS503887B1 (ja) * | 1968-08-05 | 1975-02-12 |
-
1972
- 1972-01-17 US US00218107A patent/US3758860A/en not_active Expired - Lifetime
- 1972-12-29 CA CA160,266A patent/CA997829A/en not_active Expired
-
1973
- 1973-01-03 GB GB39073A patent/GB1366471A/en not_active Expired
- 1973-01-16 JP JP670773A patent/JPS5412005B2/ja not_active Expired
- 1973-01-17 FR FR7301630A patent/FR2168454B1/fr not_active Expired
- 1973-01-17 IL IL41304A patent/IL41304A/xx unknown
- 1973-01-17 DE DE2302229A patent/DE2302229C3/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2302229B2 (de) | 1974-03-28 |
| GB1366471A (en) | 1974-09-11 |
| FR2168454A1 (ja) | 1973-08-31 |
| CA997829A (en) | 1976-09-28 |
| IL41304A0 (en) | 1973-04-30 |
| FR2168454B1 (ja) | 1981-09-25 |
| IL41304A (en) | 1975-08-31 |
| DE2302229C3 (de) | 1980-06-12 |
| DE2302229A1 (de) | 1973-08-02 |
| JPS4883711A (ja) | 1973-11-08 |
| US3758860A (en) | 1973-09-11 |