JPS5631780B2 - - Google Patents
Info
- Publication number
- JPS5631780B2 JPS5631780B2 JP9391673A JP9391673A JPS5631780B2 JP S5631780 B2 JPS5631780 B2 JP S5631780B2 JP 9391673 A JP9391673 A JP 9391673A JP 9391673 A JP9391673 A JP 9391673A JP S5631780 B2 JPS5631780 B2 JP S5631780B2
- 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.)
- Expired
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
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- 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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00283106A US3792361A (en) | 1972-08-23 | 1972-08-23 | High speed data separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS49134206A JPS49134206A (ja) | 1974-12-24 |
| JPS5631780B2 true JPS5631780B2 (ja) | 1981-07-23 |
Family
ID=23084546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9391673A Expired JPS5631780B2 (ja) | 1972-08-23 | 1973-08-23 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3792361A (ja) |
| JP (1) | JPS5631780B2 (ja) |
| CA (1) | CA975438A (ja) |
| DE (1) | DE2326658C3 (ja) |
| FR (1) | FR2197273B1 (ja) |
| GB (1) | GB1430212A (ja) |
| IT (1) | IT998404B (ja) |
| NL (1) | NL154847B (ja) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4043438A (en) * | 1976-04-27 | 1977-08-23 | Litton Business Systems, Inc. | Printing control circuit |
| US4034348A (en) * | 1976-06-28 | 1977-07-05 | Honeywell Information Systems, Inc. | Apparatus, including delay means, for sampling and recovering data recorded by the double transition recording technique |
| US4285345A (en) * | 1979-07-02 | 1981-08-25 | Vitatron Medical B.V. | Monolithic pacemaker utilizing I2 L circuitry |
| US4274067A (en) * | 1979-09-27 | 1981-06-16 | Communications Satellite Corporation | Universal clock recovery network for QPSK modems |
| KR0168079B1 (ko) * | 1992-12-14 | 1999-03-20 | 윤종용 | 클럭발생장치 |
| US6061347A (en) * | 1998-03-03 | 2000-05-09 | Rockwell Semiconductor Systems, Inc. | ACD with packet data based agent interconnect |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5132265A (ja) * | 1974-07-11 | 1976-03-18 | Philips Nv |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3518554A (en) * | 1967-05-22 | 1970-06-30 | Honeywell Inc | Detection of double transition recording |
| GB1126160A (en) * | 1967-08-26 | 1968-09-05 | Ibm | Gating circuit and magnetic storage device incorporating such a circuit |
| JPS5040338B1 (ja) * | 1968-12-04 | 1975-12-23 | ||
| US3609560A (en) * | 1970-01-09 | 1971-09-28 | Bedford Associates Inc | Data separation circuit for magnetic recorder memories |
-
1972
- 1972-08-23 US US00283106A patent/US3792361A/en not_active Expired - Lifetime
-
1973
- 1973-05-02 CA CA170,216A patent/CA975438A/en not_active Expired
- 1973-05-11 GB GB2254673A patent/GB1430212A/en not_active Expired
- 1973-05-25 DE DE2326658A patent/DE2326658C3/de not_active Expired
- 1973-08-21 IT IT28030/73A patent/IT998404B/it active
- 1973-08-22 FR FR7330505A patent/FR2197273B1/fr not_active Expired
- 1973-08-23 JP JP9391673A patent/JPS5631780B2/ja not_active Expired
- 1973-08-23 NL NL737311665A patent/NL154847B/xx not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5132265A (ja) * | 1974-07-11 | 1976-03-18 | Philips Nv |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1430212A (en) | 1976-03-31 |
| NL154847B (nl) | 1977-10-17 |
| NL7311665A (ja) | 1974-02-26 |
| DE2326658B2 (de) | 1975-01-16 |
| DE2326658A1 (de) | 1974-03-21 |
| FR2197273B1 (ja) | 1976-06-18 |
| JPS49134206A (ja) | 1974-12-24 |
| IT998404B (it) | 1976-01-20 |
| CA975438A (en) | 1975-09-30 |
| FR2197273A1 (ja) | 1974-03-22 |
| DE2326658C3 (de) | 1979-12-13 |
| US3792361A (en) | 1974-02-12 |