JPS5564672A - Display system for tape remaining time - Google Patents

Display system for tape remaining time

Info

Publication number
JPS5564672A
JPS5564672A JP13585078A JP13585078A JPS5564672A JP S5564672 A JPS5564672 A JP S5564672A JP 13585078 A JP13585078 A JP 13585078A JP 13585078 A JP13585078 A JP 13585078A JP S5564672 A JPS5564672 A JP S5564672A
Authority
JP
Japan
Prior art keywords
reel
angular speed
mode
tape thickness
remaining time
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
JP13585078A
Other languages
Japanese (ja)
Other versions
JPS6151352B2 (en
Inventor
Katsuo Mori
Yoshinori Okada
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13585078A priority Critical patent/JPS5564672A/en
Publication of JPS5564672A publication Critical patent/JPS5564672A/en
Publication of JPS6151352B2 publication Critical patent/JPS6151352B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To display the remaining time with high precision by removing an influence of dispersion in tape thickness even in any mode, recording, reproduction, rapid traverse, or rewind mode, by making error corrections by calculating tape thickness by detecting the angular speed of a tape reel.
CONSTITUTION: The angular speed of a supply reel is detected by detecting and amplifying light from light emitting diode 51 by photo detecting transistor 52. Similarly, the angular speed of a take-up reel is detected by photo detecting transistor 55. Mode switches 24 are buttons for recording, reproduction, etc., and operating respective buttons determines selectively arithmetic modes of microcomputer 21. From supply-reel angular speed (ω1) and take-up-reel angular speed (ω2), tape thickness D is calculated and then microcomputer 21 makes error correcting calculation, so that the remaining time or use time can be calculated and displayed with high precision without being influenced by the tape thickness in any mode such as recording and reproduction.
COPYRIGHT: (C)1980,JPO&Japio
JP13585078A 1978-11-06 1978-11-06 Display system for tape remaining time Granted JPS5564672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13585078A JPS5564672A (en) 1978-11-06 1978-11-06 Display system for tape remaining time

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13585078A JPS5564672A (en) 1978-11-06 1978-11-06 Display system for tape remaining time

Publications (2)

Publication Number Publication Date
JPS5564672A true JPS5564672A (en) 1980-05-15
JPS6151352B2 JPS6151352B2 (en) 1986-11-08

Family

ID=15161219

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13585078A Granted JPS5564672A (en) 1978-11-06 1978-11-06 Display system for tape remaining time

Country Status (1)

Country Link
JP (1) JPS5564672A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57105873A (en) * 1980-12-19 1982-07-01 Matsushita Electric Ind Co Ltd Magnetic recording and playback device
JPS61214192A (en) * 1985-03-19 1986-09-24 Fujitsu Ltd Tape control system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS589502A (en) * 1981-07-09 1983-01-19 Mitsubishi Electric Corp Control device in rolling stock
JPS6030034A (en) * 1983-07-29 1985-02-15 Nec Corp Device for exposing color picture tube

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS589502A (en) * 1981-07-09 1983-01-19 Mitsubishi Electric Corp Control device in rolling stock
JPS6030034A (en) * 1983-07-29 1985-02-15 Nec Corp Device for exposing color picture tube

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57105873A (en) * 1980-12-19 1982-07-01 Matsushita Electric Ind Co Ltd Magnetic recording and playback device
JPS6252389B2 (en) * 1980-12-19 1987-11-05 Matsushita Electric Ind Co Ltd
JPS61214192A (en) * 1985-03-19 1986-09-24 Fujitsu Ltd Tape control system

Also Published As

Publication number Publication date
JPS6151352B2 (en) 1986-11-08

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