JPS5629876A - Time counter for magnetic tape - Google Patents

Time counter for magnetic tape

Info

Publication number
JPS5629876A
JPS5629876A JP10273379A JP10273379A JPS5629876A JP S5629876 A JPS5629876 A JP S5629876A JP 10273379 A JP10273379 A JP 10273379A JP 10273379 A JP10273379 A JP 10273379A JP S5629876 A JPS5629876 A JP S5629876A
Authority
JP
Japan
Prior art keywords
tape
reel
output
unit
signal
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
JP10273379A
Other languages
Japanese (ja)
Inventor
Teiichi Yamamoto
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP10273379A priority Critical patent/JPS5629876A/en
Publication of JPS5629876A publication Critical patent/JPS5629876A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make accurate the recording and reproduction with a simple operation, by providing the unit producing signal every unit revolution of reel and measuring the tape winding diameter wound on the reel with photoelectric type, and displaying the tape length and performance time via the operation circuit processing the output signal of the units.
CONSTITUTION: The unit revolution signal generator 11 consisting of the magnetic piece 11a sticked to the disc 4a of the winding reel 4 and the proximity switch 11b is provided. Further, the light source 12 and the photodetector 13 are provided between the tape winding section 8a, and the output of the photodetector 13 detects the tape winding diameter. The output signal is fed to the tape winding diameter calculation circuit, the tape length is calculated at the tape length sum calculation circuit via the output from the reel unit revolution signal and the reel revolution number output circuit, and the tape length is displayed on the display unit. Further, the tape playing time is displayed via the tape playing conversion circuit. Accordingly, the operation is simple, the production of noise is less, and accurate recording and playback can be made.
COPYRIGHT: (C)1981,JPO&Japio
JP10273379A 1979-08-14 1979-08-14 Time counter for magnetic tape Pending JPS5629876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10273379A JPS5629876A (en) 1979-08-14 1979-08-14 Time counter for magnetic tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10273379A JPS5629876A (en) 1979-08-14 1979-08-14 Time counter for magnetic tape

Publications (1)

Publication Number Publication Date
JPS5629876A true JPS5629876A (en) 1981-03-25

Family

ID=14335440

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10273379A Pending JPS5629876A (en) 1979-08-14 1979-08-14 Time counter for magnetic tape

Country Status (1)

Country Link
JP (1) JPS5629876A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5817578A (en) * 1981-07-24 1983-02-01 Akai Electric Co Ltd Display device for running amount of tape
JP2009298511A (en) * 2008-06-11 2009-12-24 Tokyo Automatic Machinery Works Ltd Residual amount detection device of film reel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5817578A (en) * 1981-07-24 1983-02-01 Akai Electric Co Ltd Display device for running amount of tape
JP2009298511A (en) * 2008-06-11 2009-12-24 Tokyo Automatic Machinery Works Ltd Residual amount detection device of film reel

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