JPS5463812A - Tape locator - Google Patents

Tape locator

Info

Publication number
JPS5463812A
JPS5463812A JP12964677A JP12964677A JPS5463812A JP S5463812 A JPS5463812 A JP S5463812A JP 12964677 A JP12964677 A JP 12964677A JP 12964677 A JP12964677 A JP 12964677A JP S5463812 A JPS5463812 A JP S5463812A
Authority
JP
Japan
Prior art keywords
reel
rotation
time period
tape
period
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
Application number
JP12964677A
Other languages
Japanese (ja)
Other versions
JPS6030033B2 (en
Inventor
Tadao Fujita
Noriaki Naito
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP12964677A priority Critical patent/JPS6030033B2/en
Publication of JPS5463812A publication Critical patent/JPS5463812A/en
Publication of JPS6030033B2 publication Critical patent/JPS6030033B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To shorten the stand-by time period, which continues until the first rotation detecting pulse is obtained, by equidistantly arranging m number of test pieces on the outer circumference of a disc-shaped rotor, which is made coactive with a reel, and by making the stand-by time period equal to that required for rotation of 360/m degrees.
CONSTITUTION: Rotation detectors 16 and 17 are arranged on the drive shafts 14 and 15 of let-off reel 12 and take-up reel 13. On the other hand, m number of test pieces 19 are mounted equidistantly along the outer circumference of a rotor 18 so that the rotation pulses obtained by detection 20 are subjected to frequency division of 1/m at 21 and fed to a counter 22. This counter 22 is also supplied with the reference pulses from a calculating circuit 23 so that is counts the number of the reference pulses countained in the rotational period T. This counted value is fed to the calculating circuit 23 so that the ratio P of the tape used to the whole tape is deduced and indicated at 26. As a result, the time period from the start of the tape running operation to the detection of the first pulse is equal at longest to the period required for turning the reel by 360/m degrees.
COPYRIGHT: (C)1979,JPO&Japio
JP12964677A 1977-10-31 1977-10-31 Tape position detection device Expired JPS6030033B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12964677A JPS6030033B2 (en) 1977-10-31 1977-10-31 Tape position detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12964677A JPS6030033B2 (en) 1977-10-31 1977-10-31 Tape position detection device

Publications (2)

Publication Number Publication Date
JPS5463812A true JPS5463812A (en) 1979-05-23
JPS6030033B2 JPS6030033B2 (en) 1985-07-13

Family

ID=15014655

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12964677A Expired JPS6030033B2 (en) 1977-10-31 1977-10-31 Tape position detection device

Country Status (1)

Country Link
JP (1) JPS6030033B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0488408A (en) * 1990-07-25 1992-03-23 Nec Corp Information processor

Also Published As

Publication number Publication date
JPS6030033B2 (en) 1985-07-13

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