GB1465579A - Tape recording and/or playback instruments - Google Patents

Tape recording and/or playback instruments

Info

Publication number
GB1465579A
GB1465579A GB1927774A GB1927774A GB1465579A GB 1465579 A GB1465579 A GB 1465579A GB 1927774 A GB1927774 A GB 1927774A GB 1927774 A GB1927774 A GB 1927774A GB 1465579 A GB1465579 A GB 1465579A
Authority
GB
United Kingdom
Prior art keywords
tape
detector
cartridge
light
aperture
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
GB1927774A
Other languages
English (en)
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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
Application filed by Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of GB1465579A publication Critical patent/GB1465579A/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
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/16—Control of operating function, e.g. switching from recording to reproducing by sensing presence, absence or position of record carrier or container
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/05—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container
    • G11B15/06—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing auxiliary features on record carriers or containers, e.g. to stop machine near the end of a tape
    • G11B15/08—Control of operating function, e.g. switching from recording to reproducing by sensing features present on or derived from record carrier or container by sensing auxiliary features on record carriers or containers, e.g. to stop machine near the end of a tape by photoelectric sensing

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
GB1927774A 1973-05-17 1974-05-02 Tape recording and/or playback instruments Expired GB1465579A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00361357A US3838291A (en) 1973-05-17 1973-05-17 Detector indicating availability and position of tape

Publications (1)

Publication Number Publication Date
GB1465579A true GB1465579A (en) 1977-02-23

Family

ID=23421712

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1927774A Expired GB1465579A (en) 1973-05-17 1974-05-02 Tape recording and/or playback instruments
GB4484074A Expired GB1465580A (en) 1973-05-17 1974-05-02 Recording tape cartridge

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB4484074A Expired GB1465580A (en) 1973-05-17 1974-05-02 Recording tape cartridge

Country Status (10)

Country Link
US (1) US3838291A (enExample)
AU (1) AU6845174A (enExample)
BR (1) BR7404005D0 (enExample)
CA (1) CA1007322A (enExample)
CH (1) CH577225A5 (enExample)
DE (1) DE2421707B2 (enExample)
FR (1) FR2230037B1 (enExample)
GB (2) GB1465579A (enExample)
IT (1) IT1013160B (enExample)
ZA (1) ZA741422B (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117166A (en) * 1982-02-25 1983-10-05 Staar Sa System for detecting the operative face of a disc carrying data on one face only
US4413718A (en) 1979-03-26 1983-11-08 Mars, Inc. Method and apparatus for detecting the presence of a coin in a passageway
GB2136626A (en) * 1983-03-16 1984-09-19 Philips Nv Optical end-of-tape detection device

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2340813C2 (de) * 1973-08-11 1982-04-01 Fa. Schwarzhaupt Medizintechnik GmbH, 5000 Köln Registriergerät zur Aufzeichnung von Blutdruck-Meßwerten
NL7713709A (nl) * 1977-12-12 1979-06-14 Philips Nv Magneetbandtransportsysteem alsmede magneetband- cassette ten behoeve van een magneetbandtrans- portsysteem en magneetbandregistratie- en/of weergaveapparaat voorzien van een magneetband- transportsysteem.
US4320421A (en) * 1980-05-27 1982-03-16 International Business Machines Corporation Rotary actuator for file protect function
US4413328A (en) * 1981-03-06 1983-11-01 International Business Machines Corporation Storage subsystems employing removable media and having a digital display on each recorder
DE3160957D1 (en) * 1980-08-21 1983-10-27 Ibm Data storage subsystem employing removable media and reducing operator errors
US4511936A (en) * 1982-05-24 1985-04-16 Northern Telecom Inc. Switch and optical sensor assembly for recorder
JPS6089678U (ja) * 1983-11-25 1985-06-19 ソニー株式会社 テ−プカセツト
US4848698A (en) * 1988-06-02 1989-07-18 Newell Research Corporation Method for writing and means for reading position-indicating markers on tape
CA2057484A1 (en) * 1991-02-13 1992-08-14 Jerry L. Alexander Optical element for magnetic recording tape cartridges
US5229620A (en) * 1991-12-31 1993-07-20 Tandberg Data A/S System for integrated tape hole detection by detecting an edge of the tape and/or a pattern on the tape
US5369285A (en) * 1992-08-24 1994-11-29 Exabyte Corporation Method and apparatus for optical detection of cleaning medium in an information storage drive
US5557098A (en) * 1994-12-20 1996-09-17 Baxter International Inc. System to identify bags disinfected by irradiation which punches holes in a polarized portion of the bag to indicate processing thereof
US7153366B1 (en) 1998-03-24 2006-12-26 Quantum Corporation Systems and method for forming a servo pattern on a magnetic tape
US7029726B1 (en) 1999-07-27 2006-04-18 Quantum Corporation Method for forming a servo pattern on a magnetic tape
JPH11339254A (ja) * 1998-03-24 1999-12-10 Quantum Corp 磁気記録テ―プ、情報記憶媒体および磁気テ―プ記録再生システム
JP4293733B2 (ja) 1999-02-16 2009-07-08 クウォンタム・コーポレイション 磁気テープへのサーボ信号書き込み方法
WO2000049605A1 (en) 1999-02-17 2000-08-24 Quantum Corporation Method of writing servo signal on magnetic tape
US6961200B2 (en) * 1999-07-27 2005-11-01 Quantum Corporation Optical servo track identification on tape storage media
US6558774B1 (en) 1999-08-17 2003-05-06 Quantum Corporation Multiple-layer backcoating for magnetic tape
EP2261694B1 (en) * 2000-01-14 2012-07-04 Keyence Corporation Photoelectric switch device
US6940676B1 (en) 2000-06-07 2005-09-06 Quantum Corporation Triple push-pull optical tracking system
US6940681B2 (en) 2001-08-20 2005-09-06 Quantum Corporation Optical to magnetic alignment in magnetic tape system
US7023650B2 (en) 2001-11-07 2006-04-04 Quantum Corporation Optical sensor to recording head alignment
US6980390B2 (en) 2003-02-05 2005-12-27 Quantum Corporation Magnetic media with embedded optical servo tracks
US7187515B2 (en) 2003-02-05 2007-03-06 Quantum Corporation Method and system for tracking magnetic media with embedded optical servo tracks

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971716A (en) * 1959-05-25 1961-02-14 Sidney O Sampson Automatic tape cartridge for magnetic recorders
US3443109A (en) * 1963-12-10 1969-05-06 Nat Res Dev Electro-optical reading device utilizing a pulsed semiconductor diode lamp
GB1122341A (en) * 1965-11-30 1968-08-07 Ferranti Ltd Improvements relating to apparatus for reading punched tape
US3461302A (en) * 1966-05-09 1969-08-12 Bonitron Inc Device for sensing the edges of webs of varying transparencies
US3557380A (en) * 1969-01-13 1971-01-19 Laser Systems Corp Radiation sensitive displacement measuring instrument

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4413718A (en) 1979-03-26 1983-11-08 Mars, Inc. Method and apparatus for detecting the presence of a coin in a passageway
GB2117166A (en) * 1982-02-25 1983-10-05 Staar Sa System for detecting the operative face of a disc carrying data on one face only
GB2136626A (en) * 1983-03-16 1984-09-19 Philips Nv Optical end-of-tape detection device

Also Published As

Publication number Publication date
US3838291A (en) 1974-09-24
IT1013160B (it) 1977-03-30
FR2230037A1 (enExample) 1974-12-13
GB1465580A (en) 1977-02-23
DE2421707B2 (de) 1976-10-21
ZA741422B (en) 1975-01-29
FR2230037B1 (enExample) 1978-12-29
AU6845174A (en) 1975-11-06
CA1007322A (en) 1977-03-22
DE2421707A1 (de) 1974-11-28
CH577225A5 (enExample) 1976-06-30
BR7404005D0 (pt) 1975-01-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee