JPS4992914A - - Google Patents
Info
- Publication number
- JPS4992914A JPS4992914A JP48005431A JP543173A JPS4992914A JP S4992914 A JPS4992914 A JP S4992914A JP 48005431 A JP48005431 A JP 48005431A JP 543173 A JP543173 A JP 543173A JP S4992914 A JPS4992914 A JP S4992914A
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
- H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
- H03J5/0281—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer the digital values being held in an auxiliary non erasable memory
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- 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
- H03G3/348—Muting in response to a mechanical action or to power supply variations, e.g. during tuning; Click removal circuits
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/18—Automatic scanning over a band of frequencies
- H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
- H03J7/28—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers
- H03J7/285—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers the counter or frequency divider being used in a phase locked loop
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Noise Elimination (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Superheterodyne Receivers (AREA)
- Circuits Of Receivers In General (AREA)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP543173A JPS5627024B2 (en) | 1973-01-09 | 1973-01-09 | |
| GB28174A GB1445031A (en) | 1973-01-09 | 1974-01-03 | Broadcast receivers |
| US430483A US3882400A (en) | 1972-11-27 | 1974-01-03 | Broadcast receiver |
| CA189,731A CA1044765A (en) | 1973-01-09 | 1974-01-08 | Broadcast receiver |
| FR7400735A FR2332659A1 (en) | 1973-01-09 | 1974-01-09 | RADIO RECEIVER WITH TRANSMITTER SELECTION |
| DE19742400943 DE2400943C2 (en) | 1973-01-09 | 1974-01-09 | Muting arrangement for a radio receiver with digital frequency processing of the oscillator signal |
| IT1924374A IT1017534B (en) | 1973-01-09 | 1974-01-09 | RADIOR RECEIVER |
| NL7400316A NL178554C (en) | 1973-01-09 | 1974-01-09 | DIGITAL RECEIVER. |
| CA312,726A CA1052447A (en) | 1973-01-09 | 1978-10-05 | Broadcast receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP543173A JPS5627024B2 (en) | 1973-01-09 | 1973-01-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4992914A true JPS4992914A (en) | 1974-09-04 |
| JPS5627024B2 JPS5627024B2 (en) | 1981-06-22 |
Family
ID=11610987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP543173A Expired JPS5627024B2 (en) | 1972-11-27 | 1973-01-09 |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS5627024B2 (en) |
| CA (1) | CA1044765A (en) |
| DE (1) | DE2400943C2 (en) |
| FR (1) | FR2332659A1 (en) |
| GB (1) | GB1445031A (en) |
| IT (1) | IT1017534B (en) |
| NL (1) | NL178554C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54125911A (en) * | 1978-03-24 | 1979-09-29 | Japan Radio Co Ltd | Automatic scan receiver |
| JPS54148417U (en) * | 1978-04-07 | 1979-10-16 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2517389C2 (en) * | 1975-04-19 | 1982-09-23 | Blaupunkt-Werke Gmbh, 3200 Hildesheim | Arrangement for switching the sensitivity of receiving devices |
| IT1050947B (en) * | 1975-11-17 | 1981-03-20 | Indesit | SIGNAL SELECTION CIRCUIT |
| US4207529A (en) * | 1976-04-08 | 1980-06-10 | Fujitsu Ten Limited | Radio receiver |
| JPS54102814A (en) * | 1978-01-30 | 1979-08-13 | Sony Corp | Synthesizer receiver |
| DE2804590A1 (en) * | 1978-02-03 | 1979-08-09 | Licentia Gmbh | Muting circuit for radio receiver - suppresses click when changing from AM to FM etc. by providing temporary alternative path with conducting transistor |
| IT1107168B (en) | 1978-06-26 | 1985-11-25 | Indesit | REFINEMENTS ON DEVICES FOR THE SELECTION OF A SIGNAL |
| NL184594C (en) * | 1979-09-04 | 1989-09-01 | Philips Nv | RADIO RECEIVER EQUIPPED WITH A FREQUENCY KEYED LOOP WITH AUDIOFREQUENT FEEDBACK AND A STEAM SWITCH. |
-
1973
- 1973-01-09 JP JP543173A patent/JPS5627024B2/ja not_active Expired
-
1974
- 1974-01-03 GB GB28174A patent/GB1445031A/en not_active Expired
- 1974-01-08 CA CA189,731A patent/CA1044765A/en not_active Expired
- 1974-01-09 DE DE19742400943 patent/DE2400943C2/en not_active Expired
- 1974-01-09 FR FR7400735A patent/FR2332659A1/en active Granted
- 1974-01-09 NL NL7400316A patent/NL178554C/en not_active IP Right Cessation
- 1974-01-09 IT IT1924374A patent/IT1017534B/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54125911A (en) * | 1978-03-24 | 1979-09-29 | Japan Radio Co Ltd | Automatic scan receiver |
| JPS54148417U (en) * | 1978-04-07 | 1979-10-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2332659A1 (en) | 1977-06-17 |
| DE2400943C2 (en) | 1984-02-23 |
| NL178554B (en) | 1985-11-01 |
| NL7400316A (en) | 1974-07-11 |
| GB1445031A (en) | 1976-08-04 |
| DE2400943A1 (en) | 1975-02-27 |
| CA1044765A (en) | 1978-12-19 |
| NL178554C (en) | 1986-04-01 |
| FR2332659B1 (en) | 1978-03-24 |
| JPS5627024B2 (en) | 1981-06-22 |
| IT1017534B (en) | 1977-08-10 |