WO1990004895A3 - Information coding process - Google Patents
Information coding process Download PDFInfo
- Publication number
- WO1990004895A3 WO1990004895A3 PCT/EP1989/001244 EP8901244W WO9004895A3 WO 1990004895 A3 WO1990004895 A3 WO 1990004895A3 EP 8901244 W EP8901244 W EP 8901244W WO 9004895 A3 WO9004895 A3 WO 9004895A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- periods
- information coding
- coding process
- pulses
- information
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N11/00—Colour television systems
- H04N11/04—Colour television systems using pulse code modulation
- H04N11/042—Codec means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1676—Time-division multiplex with pulse-position, pulse-interval, or pulse-width modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/24—Half-wave signalling systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Dc Digital Transmission (AREA)
- Time-Division Multiplex Systems (AREA)
- Selective Calling Equipment (AREA)
- Materials For Photolithography (AREA)
Abstract
According to known information coding processes, channels are condensed by frequency or time multiplexing, at a high cost and requiring a large bandwidth. According to the invention, serially arranged code elements are individually arranged in parallel, then united in a single code word. The safety of transmission is ensured by converting the information into pulse-width modulated pulses and by coding such pulses as half-periods or as periods which are then transmitted in an uninterrupted sequence of positive and negative half-periods.
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP3835630.9 | 1988-10-19 | ||
DE19883835630 DE3835630A1 (en) | 1988-08-23 | 1988-10-19 | Method for generating a frequency modulation |
DEP3904942.6 | 1989-02-17 | ||
DE3904942 | 1989-02-17 | ||
DEP3909079.5 | 1989-03-20 | ||
DE3909079 | 1989-03-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1990004895A2 WO1990004895A2 (en) | 1990-05-03 |
WO1990004895A3 true WO1990004895A3 (en) | 1990-07-12 |
Family
ID=27198399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1989/001244 WO1990004895A2 (en) | 1988-10-19 | 1989-10-18 | Information coding process |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU4429689A (en) |
CA (1) | CA2001071A1 (en) |
WO (1) | WO1990004895A2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4025026C2 (en) * | 1989-12-07 | 1997-06-12 | Dirr Josef | Method for multi-level coding of information |
US5576835A (en) * | 1992-02-24 | 1996-11-19 | Dirr; Josef | Method for run-length coding for shortening transmission time |
EP0620960B1 (en) * | 1992-11-06 | 1999-03-10 | Josef Dirr | Information coding and transmission process |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2015695A1 (en) * | 1968-08-15 | 1970-04-30 | Ibm | |
US4066841A (en) * | 1974-01-25 | 1978-01-03 | Serck Industries Limited | Data transmitting systems |
US4345323A (en) * | 1980-01-07 | 1982-08-17 | Amp Incorporated | Pulse duration digital multiplexing system |
DE3802088A1 (en) * | 1987-01-26 | 1988-08-04 | Dirr Josef | Method for the transmission of analog and/or digital information, in particular with the intermediate connection of one, two or more switching centres in telecommunications systems in particular |
EP0284019A2 (en) * | 1987-03-23 | 1988-09-28 | Josef Dirr | Method for producing frequency and/or phase shifts in alternating currents, used in particular for quadrature amplitude modulation (QAM) and for taking samples |
EP0329158A2 (en) * | 1988-02-19 | 1989-08-23 | Josef Dirr | Method for the digital and/or analog coding of the information of one, two or several channels, and/or frequency or bandwidth reduction, and/or increase of the transmission security |
-
1989
- 1989-10-18 WO PCT/EP1989/001244 patent/WO1990004895A2/en unknown
- 1989-10-18 AU AU44296/89A patent/AU4429689A/en not_active Abandoned
- 1989-10-19 CA CA 2001071 patent/CA2001071A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2015695A1 (en) * | 1968-08-15 | 1970-04-30 | Ibm | |
US4066841A (en) * | 1974-01-25 | 1978-01-03 | Serck Industries Limited | Data transmitting systems |
US4345323A (en) * | 1980-01-07 | 1982-08-17 | Amp Incorporated | Pulse duration digital multiplexing system |
DE3802088A1 (en) * | 1987-01-26 | 1988-08-04 | Dirr Josef | Method for the transmission of analog and/or digital information, in particular with the intermediate connection of one, two or more switching centres in telecommunications systems in particular |
EP0284019A2 (en) * | 1987-03-23 | 1988-09-28 | Josef Dirr | Method for producing frequency and/or phase shifts in alternating currents, used in particular for quadrature amplitude modulation (QAM) and for taking samples |
EP0329158A2 (en) * | 1988-02-19 | 1989-08-23 | Josef Dirr | Method for the digital and/or analog coding of the information of one, two or several channels, and/or frequency or bandwidth reduction, and/or increase of the transmission security |
Also Published As
Publication number | Publication date |
---|---|
CA2001071A1 (en) | 1990-04-19 |
AU4429689A (en) | 1990-05-14 |
WO1990004895A2 (en) | 1990-05-03 |
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