SE8202741L - COMPATIBLE, TRANSCRIPTABLE AND HIERARCAL DIGITAL TELEVISION SYSTEM - Google Patents
COMPATIBLE, TRANSCRIPTABLE AND HIERARCAL DIGITAL TELEVISION SYSTEMInfo
- Publication number
- SE8202741L SE8202741L SE8202741A SE8202741A SE8202741L SE 8202741 L SE8202741 L SE 8202741L SE 8202741 A SE8202741 A SE 8202741A SE 8202741 A SE8202741 A SE 8202741A SE 8202741 L SE8202741 L SE 8202741L
- Authority
- SE
- Sweden
- Prior art keywords
- samples
- signals
- transcoding
- difference signals
- subtractors
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
- H04N7/0135—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving interpolation processes
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Systems (AREA)
- Color Television Systems (AREA)
- Processing Of Color Television Signals (AREA)
- Complex Calculations (AREA)
Abstract
A transcoding arrangement transcodes signals sampled at a first frequency into second signals clocked at a second frequency. The first and second frequencies are selected so that their quotient is the ratio of integers. This results in recurrent blocks of samples having integer numbers of input samples and new output samples. A transcoder uses delay elements to form successively delayed samples of the input signal. Subtractors form difference signals representing the amplitude difference between successive delayed samples. Multipliers coupled to the subtractors multiply the difference signals by a running variable multiplicand to form weighted difference signals. The running variable is related to the effective position of the new sample being formed within a transcoding block of samples. The weighted difference signals are summed in an adder to form the new sample values. The arrangement permits transcoding between video signals sampled at different rates such as national standards for PAL and NTSC and any worldwide television standard which may be adopted. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US26261981A | 1981-05-11 | 1981-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE8202741L true SE8202741L (en) | 1982-11-12 |
Family
ID=22998297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8202741A SE8202741L (en) | 1981-05-11 | 1982-04-30 | COMPATIBLE, TRANSCRIPTABLE AND HIERARCAL DIGITAL TELEVISION SYSTEM |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS581378A (en) |
| KR (1) | KR840000134A (en) |
| AU (1) | AU8327682A (en) |
| DE (1) | DE3217681A1 (en) |
| ES (1) | ES511906A0 (en) |
| FI (1) | FI821562L (en) |
| FR (1) | FR2506102B1 (en) |
| GB (2) | GB2100092B (en) |
| IT (1) | IT1151396B (en) |
| NL (1) | NL8201914A (en) |
| PT (1) | PT74839B (en) |
| SE (1) | SE8202741L (en) |
| ZA (1) | ZA823237B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4449143A (en) * | 1981-10-26 | 1984-05-15 | Rca Corporation | Transcodeable vertically scanned high-definition television system |
| JPS5897968A (en) * | 1981-12-05 | 1983-06-10 | Sony Corp | Sampling frequency converter for video signal |
| JPS59122040A (en) * | 1982-12-27 | 1984-07-14 | Sony Corp | Digital signal processing circuit |
| US4568965A (en) * | 1983-04-13 | 1986-02-04 | Rca Corporation | Four-sample sample-rate converter |
| DE3323619A1 (en) * | 1983-06-30 | 1985-01-03 | Siemens AG, 1000 Berlin und 8000 München | METHOD AND DEVICE FOR ADAPTING THE IMAGE DATA WORD RATE OF A PAL DECODER / CODER TO THE PROCESSING CLOCK FREQUENCY OF A VIDEO PROCESSING DEVICE |
| JPS60191584A (en) * | 1984-03-13 | 1985-09-30 | Toshiba Corp | Receiver of character multiplex broadcast signal |
| US4605962A (en) * | 1984-11-30 | 1986-08-12 | Rca Corporation | Progressive scan television system with video compression exceeding display line rate |
| US4652908A (en) * | 1985-03-25 | 1987-03-24 | Rca Corporation | Filtering system for processing a reduced-resolution video image |
| JPS63245569A (en) * | 1987-03-31 | 1988-10-12 | Yokogawa Medical Syst Ltd | Picture display processor |
| KR890003139A (en) * | 1987-07-29 | 1989-04-13 | 오가 노리오 | Digital signal coding method and apparatus therefor |
| US5057911A (en) * | 1989-10-19 | 1991-10-15 | Matsushita Electric Industrial Co., Ltd. | System and method for conversion of digital video signals |
| DE19710005A1 (en) | 1997-03-12 | 1998-09-17 | Heidelberger Druckmasch Ag | Method and device for engraving printing cylinders |
| JP3013808B2 (en) * | 1997-05-19 | 2000-02-28 | 日本電気株式会社 | Resolution conversion method and display control device using the same |
| DE10002964A1 (en) * | 2000-01-25 | 2001-07-26 | Philips Corp Intellectual Pty | Arrangement for filtering digital data for video systems by controlling bursts of synchronizing data to level which can be processed by encoder circuit in given period |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB945149A (en) * | 1958-03-27 | 1963-12-23 | United Aircraft Corp | Apparatus for performing arithmetic operations |
| SE308413B (en) * | 1967-06-30 | 1969-02-10 | Ibm Svenska Ab | |
| US4051531A (en) * | 1970-03-26 | 1977-09-27 | Independent Broadcasting Authority | Television systems |
| GB1391434A (en) * | 1971-03-26 | 1975-04-23 | British Broadcasting Corp | Television standards conversion |
| GB1455821A (en) * | 1972-11-02 | 1976-11-17 | British Broadcasting Corp | Generation and monitoring of freuqencies related by a rational ratio |
| US4037093A (en) * | 1975-12-29 | 1977-07-19 | Honeywell Information Systems, Inc. | Matrix multiplier in GF(2m) |
| DE2837120A1 (en) * | 1977-09-01 | 1979-03-15 | British Broadcasting Corp | METHOD AND ARRANGEMENT FOR PROCESSING PAL COLOR TELEVISION SIGNALS IN DIGITAL FORM |
| JPS55102066A (en) * | 1979-01-31 | 1980-08-04 | Toshiba Corp | Conversion unit for image resolution |
| JPS6028185B2 (en) * | 1979-05-28 | 1985-07-03 | 日本電気株式会社 | Data interpolation method |
| JPS567343A (en) * | 1979-07-02 | 1981-01-26 | Mitsubishi Electric Corp | Fluorescent lamp |
-
1982
- 1982-04-30 SE SE8202741A patent/SE8202741L/en not_active Application Discontinuation
- 1982-05-03 PT PT74839A patent/PT74839B/en not_active IP Right Cessation
- 1982-05-04 ES ES511906A patent/ES511906A0/en active Granted
- 1982-05-04 FI FI821562A patent/FI821562L/en not_active Application Discontinuation
- 1982-05-04 AU AU83276/82A patent/AU8327682A/en not_active Abandoned
- 1982-05-10 NL NL8201914A patent/NL8201914A/en not_active Application Discontinuation
- 1982-05-10 IT IT21180/82A patent/IT1151396B/en active
- 1982-05-10 GB GB8213424A patent/GB2100092B/en not_active Expired
- 1982-05-11 FR FR8208173A patent/FR2506102B1/en not_active Expired
- 1982-05-11 KR KR1019820002073A patent/KR840000134A/en unknown
- 1982-05-11 ZA ZA823237A patent/ZA823237B/en unknown
- 1982-05-11 JP JP57079835A patent/JPS581378A/en active Pending
- 1982-05-11 DE DE19823217681 patent/DE3217681A1/en active Granted
-
1984
- 1984-11-05 GB GB08427953A patent/GB2149538A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| AU8327682A (en) | 1982-11-18 |
| NL8201914A (en) | 1982-12-01 |
| IT1151396B (en) | 1986-12-17 |
| FI821562A0 (en) | 1982-05-04 |
| FR2506102B1 (en) | 1988-03-04 |
| PT74839A (en) | 1982-06-01 |
| DE3217681C2 (en) | 1988-03-31 |
| GB2100092A (en) | 1982-12-15 |
| JPS581378A (en) | 1983-01-06 |
| GB2100092B (en) | 1986-05-29 |
| IT8221180A0 (en) | 1982-05-10 |
| PT74839B (en) | 1983-12-23 |
| ES8308465A1 (en) | 1983-08-16 |
| KR840000134A (en) | 1984-01-30 |
| GB2149538A (en) | 1985-06-12 |
| GB8427953D0 (en) | 1984-12-12 |
| FI821562L (en) | 1982-11-12 |
| DE3217681A1 (en) | 1982-11-25 |
| FR2506102A1 (en) | 1982-11-19 |
| ES511906A0 (en) | 1983-08-16 |
| ZA823237B (en) | 1983-05-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAV | Patent application has lapsed |
Ref document number: 8202741-8 Effective date: 19871225 |