JPS4432111B1 - - Google Patents
Info
- Publication number
- JPS4432111B1 JPS4432111B1 JP7579666A JP7579666A JPS4432111B1 JP S4432111 B1 JPS4432111 B1 JP S4432111B1 JP 7579666 A JP7579666 A JP 7579666A JP 7579666 A JP7579666 A JP 7579666A JP S4432111 B1 JPS4432111 B1 JP S4432111B1
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- 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
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
- G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4904—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using self-synchronising codes, e.g. split-phase codes
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Manipulation Of Pulses (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US517024A US3401346A (en) | 1965-12-28 | 1965-12-28 | Binary data detection system employing phase modulation techniques |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4432111B1 true JPS4432111B1 (ja) | 1969-12-22 |
Family
ID=24058071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7579666A Pending JPS4432111B1 (ja) | 1965-12-28 | 1966-11-19 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3401346A (ja) |
| JP (1) | JPS4432111B1 (ja) |
| AT (1) | AT270266B (ja) |
| BE (1) | BE688077A (ja) |
| CH (1) | CH444231A (ja) |
| ES (1) | ES334929A1 (ja) |
| FR (1) | FR1497324A (ja) |
| GB (1) | GB1112399A (ja) |
| NL (1) | NL6618227A (ja) |
| SE (1) | SE334050B (ja) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3506923A (en) * | 1967-01-12 | 1970-04-14 | Ibm | Binary data detection system |
| US3613015A (en) * | 1969-11-12 | 1971-10-12 | Sperry Rand Corp | Binary digital data detection system |
| US3739288A (en) * | 1970-10-08 | 1973-06-12 | Mohawk Data Sciences Corp | Demodulating circuit employing phase shifting techniques |
| FR2136906B1 (ja) * | 1971-05-07 | 1975-07-04 | Automatisme Cie Gle | |
| US3890558A (en) * | 1973-04-27 | 1975-06-17 | Int Video Corp | Voltage controlled bi-directional stable source apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3064208A (en) * | 1961-01-05 | 1962-11-13 | Bell Telephone Labor Inc | Variable frequency pulse generator |
| US3339088A (en) * | 1964-11-30 | 1967-08-29 | Tektronix Inc | Ramp voltage generator having disabling gate controlled by ramp detector circuit |
-
1965
- 1965-12-28 US US517024A patent/US3401346A/en not_active Expired - Lifetime
-
1966
- 1966-10-11 FR FR8066A patent/FR1497324A/fr not_active Expired
- 1966-10-11 BE BE688077D patent/BE688077A/xx unknown
- 1966-10-28 GB GB48334/66A patent/GB1112399A/en not_active Expired
- 1966-11-19 JP JP7579666A patent/JPS4432111B1/ja active Pending
- 1966-12-19 AT AT1166866A patent/AT270266B/de active
- 1966-12-21 CH CH1838166A patent/CH444231A/de unknown
- 1966-12-22 SE SE17566/66A patent/SE334050B/xx unknown
- 1966-12-26 ES ES334929A patent/ES334929A1/es not_active Expired
- 1966-12-27 NL NL6618227A patent/NL6618227A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1499743A1 (de) | 1970-03-19 |
| SE334050B (ja) | 1971-04-05 |
| FR1497324A (fr) | 1967-10-06 |
| ES334929A1 (es) | 1968-03-01 |
| CH444231A (de) | 1967-09-30 |
| DE1499743B2 (de) | 1972-06-22 |
| BE688077A (ja) | 1967-03-16 |
| NL6618227A (ja) | 1967-06-29 |
| GB1112399A (en) | 1968-05-01 |
| AT270266B (de) | 1969-04-25 |
| US3401346A (en) | 1968-09-10 |