CA1129085A - Peak detector circuit - Google Patents
Peak detector circuitInfo
- Publication number
- CA1129085A CA1129085A CA333,313A CA333313A CA1129085A CA 1129085 A CA1129085 A CA 1129085A CA 333313 A CA333313 A CA 333313A CA 1129085 A CA1129085 A CA 1129085A
- Authority
- CA
- Canada
- Prior art keywords
- capacitor
- charging
- transistor
- coupled
- impedance
- 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
- 239000003990 capacitor Substances 0.000 claims abstract description 114
- 239000004065 semiconductor Substances 0.000 claims abstract description 31
- 230000007423 decrease Effects 0.000 claims abstract description 12
- 230000000153 supplemental effect Effects 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims description 25
- 238000007599 discharging Methods 0.000 claims description 4
- 230000000306 recurrent effect Effects 0.000 claims 4
- 230000001747 exhibiting effect Effects 0.000 claims 3
- 239000004020 conductor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 101150058845 SYNRG gene Proteins 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/52—Automatic gain control
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/04—Measuring peak values or amplitude or envelope of AC or of pulses
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/52—Automatic gain control
- H04N5/53—Keyed automatic gain control
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Television Receiver Circuits (AREA)
- Control Of Amplification And Gain Control (AREA)
- Picture Signal Circuits (AREA)
- Measurement Of Current Or Voltage (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/934,834 US4216502A (en) | 1978-08-18 | 1978-08-18 | Peak detector circuit |
| US934,834 | 1978-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1129085A true CA1129085A (en) | 1982-08-03 |
Family
ID=25466145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA333,313A Expired CA1129085A (en) | 1978-08-18 | 1979-08-07 | Peak detector circuit |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4216502A (OSRAM) |
| JP (1) | JPS5528693A (OSRAM) |
| KR (1) | KR820001002B1 (OSRAM) |
| CA (1) | CA1129085A (OSRAM) |
| DE (1) | DE2933395C2 (OSRAM) |
| FR (1) | FR2433754A1 (OSRAM) |
| GB (1) | GB2028611B (OSRAM) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1183580A (en) * | 1982-02-19 | 1985-03-05 | Linear Technology Inc. | Peak amplitude detector |
| US4680631A (en) * | 1984-09-19 | 1987-07-14 | Tokyo Electric Co., Ltd. | Television composite video signal processing circuit |
| US4937670A (en) * | 1989-01-31 | 1990-06-26 | Rca Licensing Corporation | Peak detector with feedback |
| EP1479228B1 (en) * | 2002-02-09 | 2009-09-23 | Nxp B.V. | Agc detector and method for agc detecting |
| US7548738B2 (en) * | 2005-06-30 | 2009-06-16 | Silicon Laboratories Inc. | Peak detector |
| JP4528790B2 (ja) * | 2007-01-09 | 2010-08-18 | Ｏｋｉセミコンダクタ株式会社 | 信号強度検出回路 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3624290A (en) * | 1969-12-30 | 1971-11-30 | Zenith Radio Corp | Television receiver agc system keyed in response to time coincidence of sync and flyback pulses |
| GB1281984A (en) * | 1970-03-07 | 1972-07-19 | Marconi Instruments Ltd | Improvements in or relating to peak detection circuits |
| US3835248A (en) * | 1973-03-05 | 1974-09-10 | Rca Corp | Keyed agc circuit |
-
1978
- 1978-08-18 US US05/934,834 patent/US4216502A/en not_active Expired - Lifetime
-
1979
- 1979-08-07 CA CA333,313A patent/CA1129085A/en not_active Expired
- 1979-08-13 JP JP10349679A patent/JPS5528693A/ja active Granted
- 1979-08-14 GB GB7928269A patent/GB2028611B/en not_active Expired
- 1979-08-17 FR FR7920897A patent/FR2433754A1/fr active Granted
- 1979-08-17 DE DE2933395A patent/DE2933395C2/de not_active Expired
- 1979-08-18 KR KR7902825A patent/KR820001002B1/ko not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2933395C2 (de) | 1982-10-07 |
| DE2933395A1 (de) | 1980-04-10 |
| US4216502A (en) | 1980-08-05 |
| FR2433754B1 (OSRAM) | 1983-07-18 |
| FR2433754A1 (fr) | 1980-03-14 |
| GB2028611A (en) | 1980-03-05 |
| JPS5528693A (en) | 1980-02-29 |
| GB2028611B (en) | 1983-02-02 |
| JPH0130345B2 (OSRAM) | 1989-06-19 |
| KR820001002B1 (ko) | 1982-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4115812A (en) | Automatic gain control circuit | |
| US4044375A (en) | Brightness control apparatus | |
| US4097896A (en) | Sync separator circuit | |
| US3441669A (en) | Threshold control for sync separator noise protection circuit and for agc stage | |
| CA1090917A (en) | Positive feedback high gain agc amplifier | |
| US4212032A (en) | Synchronization and gain control circuit | |
| US3898380A (en) | AGC Detector circuit having noise and overload correction capability | |
| CA1129085A (en) | Peak detector circuit | |
| CA1049649A (en) | Black level clamping circuit for a television signal processor | |
| US4042959A (en) | Noise suppression circuit | |
| US3835248A (en) | Keyed agc circuit | |
| US3624288A (en) | Video signal noise elimination circuit | |
| US4218708A (en) | Keyed AGC circuit | |
| US3555182A (en) | Plural operating mode automatic gain control system | |
| CA1038487A (en) | Automatic frequency control device for television receiver | |
| US4172239A (en) | Signal attenuator | |
| US3976836A (en) | Automatic black level setting circuit | |
| US4207591A (en) | Gated automatic beam current limiter in a video signal processing system | |
| US4276566A (en) | Circuit for inhibiting radio frequency interference in a television receiver | |
| US4040090A (en) | Bias gate for noise suppression circuit | |
| US4523233A (en) | Automatic bias control system with compensated sense point | |
| GB2046041A (en) | Signal overload prevention circuit | |
| FI61982C (fi) | Anordning foer behandling av amplitudmodulerade signaler | |
| US3740470A (en) | Noise suppression circuit | |
| US3548097A (en) | Transistorized control circuitry for television receiver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 19990803 |