DE2738905C3 - Abstimmeinrichtung für einen Fernsehempfänger - Google Patents
Abstimmeinrichtung für einen FernsehempfängerInfo
- Publication number
- DE2738905C3 DE2738905C3 DE19772738905 DE2738905A DE2738905C3 DE 2738905 C3 DE2738905 C3 DE 2738905C3 DE 19772738905 DE19772738905 DE 19772738905 DE 2738905 A DE2738905 A DE 2738905A DE 2738905 C3 DE2738905 C3 DE 2738905C3
- Authority
- DE
- Germany
- Prior art keywords
- frequency
- signal
- phase
- reference frequency
- control signal
- 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
- 238000000034 method Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims 1
- 230000036961 partial effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 7
- 239000013078 crystal Substances 0.000 description 5
- 238000010894 electron beam technology Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241000282979 Alces alces Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000013515 script Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 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 (3)
| Publication Number | Publication Date |
|---|---|
| DE2738905A1 DE2738905A1 (de) | 1978-03-09 |
| DE2738905B2 DE2738905B2 (de) | 1980-01-31 |
| DE2738905C3 true DE2738905C3 (de) | 1980-09-18 |
Family
ID=27109902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19772738905 Expired DE2738905C3 (de) | 1976-08-30 | 1977-08-29 | Abstimmeinrichtung für einen Fernsehempfänger |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS5923516B2 (enrdf_load_stackoverflow) |
| CA (1) | CA1095194A (enrdf_load_stackoverflow) |
| DE (1) | DE2738905C3 (enrdf_load_stackoverflow) |
| FR (1) | FR2363231A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1586368A (enrdf_load_stackoverflow) |
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 |
|---|---|
| FR2363231B1 (enrdf_load_stackoverflow) | 1982-01-29 |
| DE2738905A1 (de) | 1978-03-09 |
| JPS5923516B2 (ja) | 1984-06-02 |
| CA1095194A (en) | 1981-02-03 |
| GB1586368A (en) | 1981-03-18 |
| JPS5330220A (en) | 1978-03-22 |
| FR2363231A1 (fr) | 1978-03-24 |
| DE2738905B2 (de) | 1980-01-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |