GB1435603A - Method and apparatus for synchronizing the reading of photo graphic records of digital informatio - Google Patents

Method and apparatus for synchronizing the reading of photo graphic records of digital informatio

Info

Publication number
GB1435603A
GB1435603A GB1598873A GB1598873A GB1435603A GB 1435603 A GB1435603 A GB 1435603A GB 1598873 A GB1598873 A GB 1598873A GB 1598873 A GB1598873 A GB 1598873A GB 1435603 A GB1435603 A GB 1435603A
Authority
GB
United Kingdom
Prior art keywords
sync
value
word
counter
incorrect
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.)
Expired
Application number
GB1598873A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Battelle Development Corp
Original Assignee
Battelle Development Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10069189&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB1435603(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to CA167,699A priority Critical patent/CA995811A/en
Application filed by Battelle Development Corp filed Critical Battelle Development Corp
Priority to GB1598873A priority patent/GB1435603A/en
Priority to GB1436161D priority patent/GB1436161A/en
Priority to NL7306189A priority patent/NL181531C/en
Priority to DE19732329169 priority patent/DE2329169C2/en
Publication of GB1435603A publication Critical patent/GB1435603A/en
Priority to NL8700040A priority patent/NL8700040A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • 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
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • 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
    • 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
    • G11B27/30—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 the same track as the main recording
    • G11B27/3027—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 the same track as the main recording used signal is digitally coded
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
    • G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
    • G11C13/048—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using other optical storage elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/926—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback by pulse code modulation
    • 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
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G11B2020/10537—Audio or video recording
    • G11B2020/10592—Audio or video recording specifically adapted for recording or reproducing multichannel signals
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/218—Write-once discs
    • 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)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

1435603 Recording and playback systems BATTELLE DEVELOPMENT CORP 3 April 1973 15988/73 Heading G4M The Specification describes the recording and playback system of Specification 1,302,368 and the photographic record of Specification 1,302,369 and describes a further means of synchronizing during read-out to ensure that the words read out contain the bits in the same locations as the words recorded. Data may be stored in lines on a document which is scanned by the reader. The first bit on each line is arranged to be a "1" and is used after detection of the retrace period of the scanner to resynchronize a clock oscillator and a word sync. counter (Fig. 7, not shown). Alternatively a special word, e.g. all "1's" may be periodically added to the data and recognized to reset a word sync. counter to zero. Or a specific bit position in a word may contain a specific value and that location in each word is sampled for the value. If the sampled value is incorrect a clock pulse to the word sync. counter enabling the sampling operation is inhibited to sample the next bit until the correct value is found. Alternatively the rates of change of two adjacent bits may be determined and compared to inhibit a clock pulse if an incorrect value is obtained. An analog input signal may carry a signal of a given frequency which is filtered out and digitized. If incorrect sync. is obtained the frequency value will be a factor of 2<SP>n</SP> wrong and the sync counter is altered to produce the correct value. The rate of change of particular bits may be monitored. The bits may change randomly or one may be changed at a predetermined rate. Parity of the words may be changed and a repeated parity error may indicate incorrect sync. Sync. spots of specific shapes may be arranged on the record to be detected through appropriate masks or sync. marks may be in a separate track or at different depths on a multi layer recording or of different colours to data markings.
GB1598873A 1973-04-03 1973-04-03 Method and apparatus for synchronizing the reading of photo graphic records of digital informatio Expired GB1435603A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CA167,699A CA995811A (en) 1973-04-03 1973-04-02 Method and apparatus for synchronizing photographic records of digital information
GB1598873A GB1435603A (en) 1973-04-03 1973-04-03 Method and apparatus for synchronizing the reading of photo graphic records of digital informatio
GB1436161D GB1436161A (en) 1973-04-03 1973-04-24 Method and apparatus for synchronizing the reading of photo graphic records of digital information
NL7306189A NL181531C (en) 1973-04-03 1973-05-03 METHOD AND SYSTEM FOR SYNCHRONIZING THE DIGITAL INFORMATION SCANNING
DE19732329169 DE2329169C2 (en) 1973-04-03 1973-06-07 Device for synchronizing the reproduction of digital information
NL8700040A NL8700040A (en) 1973-04-03 1987-01-09 METHOD AND SYSTEM FOR SYNCHRONIZING PHOTOGRAPHIC RECORDINGS WITH DIGITAL INFORMATION.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1598873A GB1435603A (en) 1973-04-03 1973-04-03 Method and apparatus for synchronizing the reading of photo graphic records of digital informatio

Publications (1)

Publication Number Publication Date
GB1435603A true GB1435603A (en) 1976-05-12

Family

ID=10069189

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1598873A Expired GB1435603A (en) 1973-04-03 1973-04-03 Method and apparatus for synchronizing the reading of photo graphic records of digital informatio
GB1436161D Expired GB1436161A (en) 1973-04-03 1973-04-24 Method and apparatus for synchronizing the reading of photo graphic records of digital information

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1436161D Expired GB1436161A (en) 1973-04-03 1973-04-24 Method and apparatus for synchronizing the reading of photo graphic records of digital information

Country Status (4)

Country Link
CA (1) CA995811A (en)
DE (1) DE2329169C2 (en)
GB (2) GB1435603A (en)
NL (1) NL181531C (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064791A1 (en) * 1981-05-08 1982-11-17 Koninklijke Philips Electronics N.V. Method of transmitting an audio signal via a transmission channel
EP0032271B1 (en) * 1980-01-09 1983-10-05 Koninklijke Philips Electronics N.V. Apparatus for writing digital information in a disc-shaped optically readable record carrier
FR2544145A1 (en) * 1983-04-06 1984-10-12 Ampex METHOD AND DEVICE FOR SYNCHRONIZING DIGITAL SIGNALS FOR MAGNETIC RECORDERS WITH ROTATING HEADS
EP0236017A2 (en) * 1986-02-27 1987-09-09 Sony Corporation Synchronizing signal decoding
EP0241978A1 (en) * 1986-04-14 1987-10-21 Optical Storage International Holland Optical record carrier and apparatus for reading the record carrier
EP0319102A1 (en) * 1987-12-03 1989-06-07 Koninklijke Philips Electronics N.V. Method of and device for recording information on a record carrier, and device for reading the recorded information
WO1992007356A1 (en) * 1990-10-16 1992-04-30 Beni Primov Apparatus and method for writing and reading digital information

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6044837A (en) * 1983-08-23 1985-03-11 Victor Co Of Japan Ltd Waveform regenerating device
DE102011114874B4 (en) * 2011-09-30 2024-09-26 Carl Zeiss Microscopy Gmbh Microscope comprising an evaluation circuit for an optoelectronic detector for recording in particular fluorescence events

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2003057A1 (en) * 1970-01-23 1971-07-29 Battelle Development Corp Audiovisual signal recording and playback system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0032271B1 (en) * 1980-01-09 1983-10-05 Koninklijke Philips Electronics N.V. Apparatus for writing digital information in a disc-shaped optically readable record carrier
EP0064791A1 (en) * 1981-05-08 1982-11-17 Koninklijke Philips Electronics N.V. Method of transmitting an audio signal via a transmission channel
FR2544145A1 (en) * 1983-04-06 1984-10-12 Ampex METHOD AND DEVICE FOR SYNCHRONIZING DIGITAL SIGNALS FOR MAGNETIC RECORDERS WITH ROTATING HEADS
EP0236017A2 (en) * 1986-02-27 1987-09-09 Sony Corporation Synchronizing signal decoding
EP0236017A3 (en) * 1986-02-27 1990-04-04 Sony Corporation Synchronizing signal decoding
EP0241978A1 (en) * 1986-04-14 1987-10-21 Optical Storage International Holland Optical record carrier and apparatus for reading the record carrier
EP0319102A1 (en) * 1987-12-03 1989-06-07 Koninklijke Philips Electronics N.V. Method of and device for recording information on a record carrier, and device for reading the recorded information
WO1992007356A1 (en) * 1990-10-16 1992-04-30 Beni Primov Apparatus and method for writing and reading digital information

Also Published As

Publication number Publication date
DE2329169C2 (en) 1985-06-27
GB1436161A (en) 1976-05-19
NL181531B (en) 1987-04-01
NL7306189A (en) 1974-11-05
CA995811A (en) 1976-08-24
DE2329169A1 (en) 1975-01-02
NL181531C (en) 1990-03-16

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
430B Application (made) for amendment of specification (sect. 30/1949)
PE20 Patent expired after termination of 20 years

Effective date: 19930402

430I Application withdrawn (sect. 30/1949)