GB1581933A - Carriers at nonstandard frequency tuning apparatus permitting reception of rf eg television - Google Patents
Carriers at nonstandard frequency tuning apparatus permitting reception of rf eg television Download PDFInfo
- Publication number
- GB1581933A GB1581933A GB19834/77A GB1983477A GB1581933A GB 1581933 A GB1581933 A GB 1581933A GB 19834/77 A GB19834/77 A GB 19834/77A GB 1983477 A GB1983477 A GB 1983477A GB 1581933 A GB1581933 A GB 1581933A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- frequency
- local oscillator
- offset
- count
- 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
- 239000000969 carrier Substances 0.000 title description 39
- 230000009977 dual effect Effects 0.000 claims description 84
- 230000004044 response Effects 0.000 claims description 37
- 238000011156 evaluation Methods 0.000 claims description 31
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 238000013459 approach Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 230000002401 inhibitory effect Effects 0.000 claims 3
- 230000014509 gene expression Effects 0.000 description 20
- 230000008859 change Effects 0.000 description 17
- 230000007704 transition Effects 0.000 description 13
- 239000003990 capacitor Substances 0.000 description 12
- 230000006870 function Effects 0.000 description 10
- 239000000523 sample Substances 0.000 description 8
- 238000012546 transfer Methods 0.000 description 8
- 230000001960 triggered effect Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 230000014616 translation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
- H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant 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)
- Superheterodyne Receivers (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Television Receiver Circuits (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/688,521 US4031549A (en) | 1976-05-21 | 1976-05-21 | Television tuning system with provisions for receiving RF carrier at nonstandard frequency |
| US05/688,588 US4109283A (en) | 1976-05-21 | 1976-05-21 | Frequency counter for a television tuning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1581933A true GB1581933A (en) | 1980-12-31 |
Family
ID=27104242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19834/77A Expired GB1581933A (en) | 1976-05-21 | 1977-05-11 | Carriers at nonstandard frequency tuning apparatus permitting reception of rf eg television |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS5928297B2 (enrdf_load_stackoverflow) |
| AT (1) | AT381819B (enrdf_load_stackoverflow) |
| AU (1) | AU514310B2 (enrdf_load_stackoverflow) |
| DE (1) | DE2722659C2 (enrdf_load_stackoverflow) |
| FI (1) | FI65516C (enrdf_load_stackoverflow) |
| FR (1) | FR2361789A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1581933A (enrdf_load_stackoverflow) |
| HK (1) | HK33386A (enrdf_load_stackoverflow) |
| IT (1) | IT1111661B (enrdf_load_stackoverflow) |
| SE (1) | SE415720B (enrdf_load_stackoverflow) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4917254A (enrdf_load_stackoverflow) * | 1972-06-05 | 1974-02-15 | ||
| US3949158A (en) * | 1974-12-31 | 1976-04-06 | Quasar Electronics Corporation | Wide band aft circuit for television receiver |
| IT1073074B (it) * | 1975-11-14 | 1985-04-13 | Rca Corp | Sintetizzatore di frequenze televisive,per portanti di frequenza non standardizzata |
| US4078212A (en) * | 1976-02-27 | 1978-03-07 | Rca Corporation | Dual mode frequency synthesizer for a television tuning apparatus |
-
1977
- 1977-05-02 AU AU24761/77A patent/AU514310B2/en not_active Expired
- 1977-05-11 GB GB19834/77A patent/GB1581933A/en not_active Expired
- 1977-05-13 FI FI771529A patent/FI65516C/fi not_active IP Right Cessation
- 1977-05-13 SE SE7705644A patent/SE415720B/xx not_active IP Right Cessation
- 1977-05-18 IT IT23730/77A patent/IT1111661B/it active
- 1977-05-18 DE DE2722659A patent/DE2722659C2/de not_active Expired
- 1977-05-20 FR FR7715582A patent/FR2361789A1/fr active Granted
- 1977-05-20 AT AT0364577A patent/AT381819B/de not_active IP Right Cessation
- 1977-05-21 JP JP52059272A patent/JPS5928297B2/ja not_active Expired
-
1986
- 1986-05-15 HK HK333/86A patent/HK33386A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2722659C2 (de) | 1985-05-30 |
| DE2722659A1 (de) | 1977-11-24 |
| FR2361789A1 (fr) | 1978-03-10 |
| FR2361789B1 (enrdf_load_stackoverflow) | 1982-11-19 |
| FI65516B (fi) | 1984-01-31 |
| FI771529A7 (enrdf_load_stackoverflow) | 1977-11-22 |
| JPS5310920A (en) | 1978-01-31 |
| AT381819B (de) | 1986-12-10 |
| FI65516C (fi) | 1984-05-10 |
| HK33386A (en) | 1986-05-23 |
| IT1111661B (it) | 1986-01-13 |
| SE7705644L (sv) | 1977-11-22 |
| JPS5928297B2 (ja) | 1984-07-12 |
| SE415720B (sv) | 1980-10-20 |
| AU2476177A (en) | 1978-11-09 |
| ATA364577A (de) | 1986-04-15 |
| AU514310B2 (en) | 1981-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4031549A (en) | Television tuning system with provisions for receiving RF carrier at nonstandard frequency | |
| US4109283A (en) | Frequency counter for a television tuning system | |
| US4025953A (en) | Frequency synthesizer tuning system for television receivers | |
| US4575761A (en) | AFT arrangement for a double conversion tuner | |
| FI65877C (fi) | Anordning foer att i en televisionsmottagare avstaemma mottagaren till en radiofrekvensbaervaog | |
| US4041535A (en) | Frequency synthesizer tuning system with signal seek control | |
| US4498191A (en) | Digital automatic frequency control with tracking | |
| US3401353A (en) | Automatic coarse tuning system for a frequency synthesizer | |
| US4521916A (en) | Frequency synthesis tuning control system for a double-conversion tuner | |
| US5015971A (en) | Frequency agile microwave signal generator | |
| US4084127A (en) | Digital frequency deviation detector useful in a television tuning system | |
| US4405947A (en) | Dual search mode type tuning system | |
| US4422096A (en) | Television frequency synthesizer for nonstandard frequency carriers | |
| US4077008A (en) | Phase locked loop tuning system with station scanning provisions | |
| US4271434A (en) | Channel selector | |
| US4009439A (en) | Programming unit for a television tuning phase locked loop | |
| CA1149978A (en) | Search type tuning system | |
| US4426734A (en) | Arrangement useful in a phase locked loop tuning control system for selectively applying an aft voltage in a manner to improve loop stability | |
| GB1561544A (en) | Tuning apparatus for radio frequency especially television receivers | |
| CA1151328A (en) | Aft arrangement for a phase locked loop tuning system | |
| CA1131721A (en) | Hangup corrector useful in locked loop tuning system | |
| US4357632A (en) | Search type tuning system with synchronization signal presence transition detector | |
| GB1581933A (en) | Carriers at nonstandard frequency tuning apparatus permitting reception of rf eg television | |
| KR810001085B1 (ko) | 비표준 주파수의 rf반송파를 수신하기 위한 텔레비죤 동조시스템 | |
| GB1590444A (en) | Phase locked loop tuning system with preset tuning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19970510 |