PT99332A - Sistema para a reproducao de um sinal de luminancia de um meio que contem um sinal de luminancia de nivel reduzido previamente gravado e sistema para a sua gravacao - Google Patents
Sistema para a reproducao de um sinal de luminancia de um meio que contem um sinal de luminancia de nivel reduzido previamente gravado e sistema para a sua gravacao Download PDFInfo
- Publication number
- PT99332A PT99332A PT99332A PT9933291A PT99332A PT 99332 A PT99332 A PT 99332A PT 99332 A PT99332 A PT 99332A PT 9933291 A PT9933291 A PT 9933291A PT 99332 A PT99332 A PT 99332A
- Authority
- PT
- Portugal
- Prior art keywords
- luminance signal
- signal
- level
- high frequency
- frequency portion
- Prior art date
Links
- 230000003044 adaptive effect Effects 0.000 claims abstract description 20
- 230000004044 response Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 5
- 230000017105 transposition Effects 0.000 description 25
- 230000002441 reversible effect Effects 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/797—Processing of colour television signals in connection with recording for recording the signal in a plurality of channels, the bandwidth of each channel being less than the bandwidth of the signal
- H04N9/7976—Processing of colour television signals in connection with recording for recording the signal in a plurality of channels, the bandwidth of each channel being less than the bandwidth of the signal by spectrum folding of the high frequency components of the luminance signal
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/02—Analogue recording or reproducing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N5/923—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback using preemphasis of the signal before modulation and deemphasis of the signal after demodulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
Landscapes
- Signal Processing (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Television Signal Processing For Recording (AREA)
- Picture Signal Circuits (AREA)
- Semiconductor Lasers (AREA)
- Processing Of Color Television Signals (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Holo Graphy (AREA)
- Details Of Television Scanning (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Television Systems (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Developing Agents For Electrophotography (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US60449390A | 1990-10-26 | 1990-10-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PT99332A true PT99332A (pt) | 1993-12-31 |
Family
ID=24419822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT99332A PT99332A (pt) | 1990-10-26 | 1991-10-25 | Sistema para a reproducao de um sinal de luminancia de um meio que contem um sinal de luminancia de nivel reduzido previamente gravado e sistema para a sua gravacao |
Country Status (11)
| Country | Link |
|---|---|
| EP (2) | EP0482945B1 (enExample) |
| JP (1) | JP2672422B2 (enExample) |
| KR (1) | KR940001422B1 (enExample) |
| CN (1) | CN1030956C (enExample) |
| AT (2) | ATE138522T1 (enExample) |
| CA (1) | CA2053966C (enExample) |
| DE (3) | DE9117171U1 (enExample) |
| DK (1) | DK0482945T3 (enExample) |
| ES (1) | ES2089150T3 (enExample) |
| PT (1) | PT99332A (enExample) |
| TW (1) | TW242212B (enExample) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR930010356B1 (ko) * | 1991-06-27 | 1993-10-16 | 삼성전자 주식회사 | 동적응재생회로 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1230467B (de) * | 1960-12-19 | 1966-12-15 | Minnesota Mining & Mfg | Einrichtung zur Verbesserung des Verhaeltnisses von Signalspannung zu Rauschspannung bei der UEbertragung oder magnetischen Speicherung von elektrischen Signalen |
| JPS5551938A (en) * | 1978-10-06 | 1980-04-16 | Nissan Motor Co Ltd | Exhaust gas refluxing device for internal combustion engine |
| JPS55117712A (en) * | 1979-02-28 | 1980-09-10 | Matsushita Electric Ind Co Ltd | Noise reduction circuit of video signal recording and reproducing device |
| JPS60152646A (ja) * | 1984-01-23 | 1985-08-10 | Kobe Steel Ltd | 半導体用リ−ドフレ−ム材 |
| JPS6236991A (ja) * | 1985-08-12 | 1987-02-17 | Hitachi Ltd | クリツプ補償回路 |
| US4831463A (en) * | 1987-01-30 | 1989-05-16 | Faroudja Y C | Video processing in which high frequency luminance components are folded into a mid-band spectrum |
-
1991
- 1991-02-28 KR KR1019910003385A patent/KR940001422B1/ko not_active Expired - Fee Related
- 1991-10-05 TW TW080107866A patent/TW242212B/zh active
- 1991-10-18 JP JP3271021A patent/JP2672422B2/ja not_active Expired - Fee Related
- 1991-10-22 CA CA002053966A patent/CA2053966C/en not_active Expired - Fee Related
- 1991-10-25 AT AT91309887T patent/ATE138522T1/de not_active IP Right Cessation
- 1991-10-25 DE DE9117171U patent/DE9117171U1/de not_active Expired - Lifetime
- 1991-10-25 PT PT99332A patent/PT99332A/pt not_active Application Discontinuation
- 1991-10-25 DK DK91309887.7T patent/DK0482945T3/da active
- 1991-10-25 DE DE69119693T patent/DE69119693T2/de not_active Expired - Fee Related
- 1991-10-25 EP EP91309887A patent/EP0482945B1/en not_active Expired - Lifetime
- 1991-10-25 AT AT95116314T patent/ATE192888T1/de not_active IP Right Cessation
- 1991-10-25 EP EP95116314A patent/EP0698997B1/en not_active Expired - Lifetime
- 1991-10-25 DE DE69132194T patent/DE69132194T2/de not_active Expired - Lifetime
- 1991-10-25 ES ES91309887T patent/ES2089150T3/es not_active Expired - Lifetime
- 1991-10-26 CN CN91108373A patent/CN1030956C/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0482945B1 (en) | 1996-05-22 |
| TW242212B (enExample) | 1995-03-01 |
| DE9117171U1 (de) | 1996-09-12 |
| CN1061125A (zh) | 1992-05-13 |
| JP2672422B2 (ja) | 1997-11-05 |
| EP0482945A3 (en) | 1993-03-03 |
| DE69119693T2 (de) | 1996-11-28 |
| ES2089150T3 (es) | 1996-10-01 |
| CA2053966C (en) | 1997-04-22 |
| ATE192888T1 (de) | 2000-05-15 |
| CA2053966A1 (en) | 1992-04-27 |
| KR940001422B1 (ko) | 1994-02-23 |
| DE69132194T2 (de) | 2000-10-05 |
| EP0698997B1 (en) | 2000-05-10 |
| DE69119693D1 (de) | 1996-06-27 |
| EP0482945A2 (en) | 1992-04-29 |
| CN1030956C (zh) | 1996-02-07 |
| EP0698997A3 (enExample) | 1996-03-13 |
| ATE138522T1 (de) | 1996-06-15 |
| JPH04284788A (ja) | 1992-10-09 |
| DE69132194D1 (de) | 2000-06-15 |
| EP0698997A2 (en) | 1996-02-28 |
| DK0482945T3 (da) | 1996-06-24 |
| KR920017069A (ko) | 1992-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BB1A | Laying open of patent application |
Effective date: 19930712 |
|
| FC3A | Refusal |
Effective date: 19981105 |