GB2020516A - Apparatus for generating recording time code signals - Google Patents
Apparatus for generating recording time code signalsInfo
- Publication number
- GB2020516A GB2020516A GB7913748A GB7913748A GB2020516A GB 2020516 A GB2020516 A GB 2020516A GB 7913748 A GB7913748 A GB 7913748A GB 7913748 A GB7913748 A GB 7913748A GB 2020516 A GB2020516 A GB 2020516A
- Authority
- GB
- United Kingdom
- Prior art keywords
- time code
- signal
- code signal
- recording time
- bit
- Prior art date
- 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.)
- Granted
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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/022—Electronic editing of analogue information signals, e.g. audio or video signals
- G11B27/024—Electronic editing of analogue information signals, e.g. audio or video signals on tapes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/022—Electronic editing of analogue information signals, e.g. audio or video signals
- G11B27/028—Electronic editing of analogue information signals, e.g. audio or video signals with computer assistance
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/022—Electronic editing of analogue information signals, e.g. audio or video signals
- G11B27/029—Insert-editing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
- G11B27/322—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier used signal is digitally coded
- G11B27/323—Time code signal, e.g. on a cue track as SMPTE- or EBU-time code
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/90—Tape-like record carriers
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
An apparatus 3 for generating a recording time code signal, e.g. for use in a video tape editing operation, comprises a time code data signal generator 12 associated with a time code signal forming circuit 11 which produces a recording time code signal consisting of bi-phase coded signals. The recording time code signal is associated with an information signal and then recorded on a recording medium in word units. The polarity of a specific bit signal of a fixed binary bit or value in a word unit of the recording time code signal is detected, and a circuit 15 changes the fixed binary bit in accordance with the polarity of the specific bit signal. Thus, a word unit of the recording time code signal, having bit signals with a constant relative polarity after the above specific bit signal, is derived from the circuit 11, so that the phase at the end of the last character of the time code signal will be known whereby, in an editing operation, new time code characters associated with additional information can be generated to be compatible in phase with the existing time code signal. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53046934A JPS6019075B2 (en) | 1978-04-20 | 1978-04-20 | Recording time code signal generator |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2020516A true GB2020516A (en) | 1979-11-14 |
GB2020516B GB2020516B (en) | 1982-06-30 |
Family
ID=12761138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7913748A Expired GB2020516B (en) | 1978-04-20 | 1979-04-20 | Apparatus for generating recording time code signals |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS6019075B2 (en) |
AT (1) | AT380609B (en) |
AU (1) | AU522543B2 (en) |
CA (1) | CA1135840A (en) |
DE (1) | DE2916074A1 (en) |
FR (1) | FR2423819B1 (en) |
GB (1) | GB2020516B (en) |
NL (1) | NL7903078A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0057074A1 (en) * | 1981-01-22 | 1982-08-04 | Sony Corporation | Time code signal generators |
EP0430283A2 (en) * | 1989-11-30 | 1991-06-05 | Sony Magnescale, Inc. | Method and system for magnetically recording information on recording medium |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4340916A (en) * | 1980-04-11 | 1982-07-20 | Sony Corporation | Apparatus and method for detecting discontinuities in time code addresses |
GB2249656B (en) * | 1990-11-12 | 1994-09-28 | Daewoo Electronics Co Ltd | A multi-deck video cassette recorder system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE757737A (en) * | 1969-10-27 | 1971-04-01 | Ampex | NEW MODE OF INFORMATION RECORDING |
US3681524A (en) * | 1970-06-16 | 1972-08-01 | Columbia Broadcasting Syst Inc | Multiple frequency time code generator and reader |
US3795903A (en) * | 1972-09-29 | 1974-03-05 | Ibm | Modified phase encoding |
JPS5949754B2 (en) * | 1976-07-31 | 1984-12-04 | ソニー株式会社 | tape editing machine |
JPS5466111A (en) * | 1977-11-05 | 1979-05-28 | Sony Corp | Time code write system |
-
1978
- 1978-04-20 JP JP53046934A patent/JPS6019075B2/en not_active Expired
-
1979
- 1979-04-18 CA CA000325717A patent/CA1135840A/en not_active Expired
- 1979-04-19 NL NL7903078A patent/NL7903078A/en not_active Application Discontinuation
- 1979-04-20 DE DE19792916074 patent/DE2916074A1/en active Granted
- 1979-04-20 GB GB7913748A patent/GB2020516B/en not_active Expired
- 1979-04-20 FR FR7910115A patent/FR2423819B1/en not_active Expired
- 1979-04-20 AU AU46294/79A patent/AU522543B2/en not_active Ceased
- 1979-04-20 AT AT300879A patent/AT380609B/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0057074A1 (en) * | 1981-01-22 | 1982-08-04 | Sony Corporation | Time code signal generators |
EP0430283A2 (en) * | 1989-11-30 | 1991-06-05 | Sony Magnescale, Inc. | Method and system for magnetically recording information on recording medium |
EP0430283A3 (en) * | 1989-11-30 | 1992-06-03 | Sony Magnescale Inc. | Method and system for magnetically recording information on recording medium |
Also Published As
Publication number | Publication date |
---|---|
NL7903078A (en) | 1979-10-23 |
JPS54139511A (en) | 1979-10-30 |
JPS6019075B2 (en) | 1985-05-14 |
AU4629479A (en) | 1979-10-25 |
DE2916074C2 (en) | 1988-03-03 |
AU522543B2 (en) | 1982-06-10 |
GB2020516B (en) | 1982-06-30 |
FR2423819A1 (en) | 1979-11-16 |
DE2916074A1 (en) | 1979-10-31 |
CA1135840A (en) | 1982-11-16 |
AT380609B (en) | 1986-06-25 |
ATA300879A (en) | 1985-10-15 |
FR2423819B1 (en) | 1986-07-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19950420 |