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JPS57127977A - Tape amount and time detecting method - Google Patents

Tape amount and time detecting method

Info

Publication number
JPS57127977A
JPS57127977A JP56012878A JP1287881A JPS57127977A JP S57127977 A JPS57127977 A JP S57127977A JP 56012878 A JP56012878 A JP 56012878A JP 1287881 A JP1287881 A JP 1287881A JP S57127977 A JPS57127977 A JP S57127977A
Authority
JP
Japan
Prior art keywords
tape
equation
time
residual amount
beginning
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.)
Pending
Application number
JP56012878A
Other languages
Japanese (ja)
Inventor
Yasushi Otake
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.)
Pioneer Corp
Original Assignee
Pioneer Corp
Pioneer Electronic 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
Application filed by Pioneer Corp, Pioneer Electronic Corp filed Critical Pioneer Corp
Priority to JP56012878A priority Critical patent/JPS57127977A/en
Publication of JPS57127977A publication Critical patent/JPS57127977A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G11B27/11—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier
    • G11B27/13—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier the information being derived from movement of the record carrier, e.g. using tachometer
    • G11B27/17—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information not detectable on the record carrier the information being derived from movement of the record carrier, e.g. using tachometer using electrical sensing means
    • 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

  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)

Abstract

PURPOSE:To surely reduce to zero residual amount time and usable time without fail even with a dispersion for constants of Equation, by correcting the Equation according to the detection of beginning and end, to reduce the residual amount time and usable time obtained at tape beginning and to zero with the predetermined Equation. CONSTITUTION:Based on a rotating period by a rotation detection element 10 of a shaft rotated with a supply reel hub 1, a tape residual amount time is obtained at an operation circuit 11 with a predetermined Equation. In this case, an output when a reader tape 2' at the end of a tape 2 crosses an end detector 12 is inputted to a wave shape circuit 13 to give a pulse 9 to the operation circuit 11. The operation circuit 11 corrects the Equation so that the residual amount time when the tape comes to the end can be zeroed based on the rotating period of the reel hub 1 at the point of time. To obtain the tape usable time, a rotation detector is provided also to the winding reel hub 1', and the Equation can be corrected so as to reduce the tape usable time to zero in response to a signal from the beginning end detector.
JP56012878A 1981-02-02 1981-02-02 Tape amount and time detecting method Pending JPS57127977A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56012878A JPS57127977A (en) 1981-02-02 1981-02-02 Tape amount and time detecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56012878A JPS57127977A (en) 1981-02-02 1981-02-02 Tape amount and time detecting method

Publications (1)

Publication Number Publication Date
JPS57127977A true JPS57127977A (en) 1982-08-09

Family

ID=11817668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56012878A Pending JPS57127977A (en) 1981-02-02 1981-02-02 Tape amount and time detecting method

Country Status (1)

Country Link
JP (1) JPS57127977A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0211583U (en) * 1988-06-30 1990-01-24

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158912A (en) * 1978-06-05 1979-12-15 Pioneer Electronic Corp Device for detecting tape amount
JPS5573945A (en) * 1978-11-28 1980-06-04 Olympus Optical Co Ltd Tape recorder
JPS55117749A (en) * 1979-03-01 1980-09-10 Tamura Electric Works Ltd Control signal transmitter of tape recorder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158912A (en) * 1978-06-05 1979-12-15 Pioneer Electronic Corp Device for detecting tape amount
JPS5573945A (en) * 1978-11-28 1980-06-04 Olympus Optical Co Ltd Tape recorder
JPS55117749A (en) * 1979-03-01 1980-09-10 Tamura Electric Works Ltd Control signal transmitter of tape recorder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0211583U (en) * 1988-06-30 1990-01-24

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