FR2363231A1 - Systeme d'accord de television a boucle verrouillee en phase - Google Patents
Systeme d'accord de television a boucle verrouillee en phaseInfo
- Publication number
- FR2363231A1 FR2363231A1 FR7726224A FR7726224A FR2363231A1 FR 2363231 A1 FR2363231 A1 FR 2363231A1 FR 7726224 A FR7726224 A FR 7726224A FR 7726224 A FR7726224 A FR 7726224A FR 2363231 A1 FR2363231 A1 FR 2363231A1
- Authority
- FR
- France
- Prior art keywords
- reference frequency
- locked loop
- tuning system
- phase locked
- local oscillator
- 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
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Superheterodyne Receivers (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Television Receiver Circuits (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US71845576A | 1976-08-30 | 1976-08-30 | |
| US05/779,126 US4106059A (en) | 1976-08-30 | 1977-03-18 | Phase locked loop television tuning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2363231A1 true FR2363231A1 (fr) | 1978-03-24 |
| FR2363231B1 FR2363231B1 (Direct) | 1982-01-29 |
Family
ID=27109902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7726224A Granted FR2363231A1 (fr) | 1976-08-30 | 1977-08-29 | Systeme d'accord de television a boucle verrouillee en phase |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5923516B2 (Direct) |
| CA (1) | CA1095194A (Direct) |
| DE (1) | DE2738905C3 (Direct) |
| FR (1) | FR2363231A1 (Direct) |
| GB (1) | GB1586368A (Direct) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0787332B2 (ja) * | 1986-07-18 | 1995-09-20 | 株式会社東芝 | フイルタ回路の時定数自動調整回路 |
-
1977
- 1977-08-02 CA CA283,904A patent/CA1095194A/en not_active Expired
- 1977-08-25 GB GB3570477A patent/GB1586368A/en not_active Expired
- 1977-08-29 FR FR7726224A patent/FR2363231A1/fr active Granted
- 1977-08-29 JP JP10414577A patent/JPS5923516B2/ja not_active Expired
- 1977-08-29 DE DE19772738905 patent/DE2738905C3/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5923516B2 (ja) | 1984-06-02 |
| DE2738905A1 (de) | 1978-03-09 |
| CA1095194A (en) | 1981-02-03 |
| DE2738905C3 (de) | 1980-09-18 |
| DE2738905B2 (de) | 1980-01-31 |
| JPS5330220A (en) | 1978-03-22 |
| GB1586368A (en) | 1981-03-18 |
| FR2363231B1 (Direct) | 1982-01-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |