JPS5641568A - Display system for run time of cassette tape - Google Patents

Display system for run time of cassette tape

Info

Publication number
JPS5641568A
JPS5641568A JP11555079A JP11555079A JPS5641568A JP S5641568 A JPS5641568 A JP S5641568A JP 11555079 A JP11555079 A JP 11555079A JP 11555079 A JP11555079 A JP 11555079A JP S5641568 A JPS5641568 A JP S5641568A
Authority
JP
Japan
Prior art keywords
tape
reel
run time
take
counter
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
JP11555079A
Other languages
Japanese (ja)
Other versions
JPS6053392B2 (en
Inventor
Kenichi Nagasawa
Eiji Takiguchi
Susumu Sato
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.)
Tamura Electric Works Ltd
Original Assignee
Tamura Electric Works 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 Tamura Electric Works Ltd filed Critical Tamura Electric Works Ltd
Priority to JP11555079A priority Critical patent/JPS6053392B2/en
Publication of JPS5641568A publication Critical patent/JPS5641568A/en
Publication of JPS6053392B2 publication Critical patent/JPS6053392B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To display the run time accurately without reference to the kind, thickness, etc., of a tape by using detection information on the rotational period of a take- up reel and on how much the tape is taken up and a previously stored constant.
CONSTITUTION: After counter part 11 is reset by counter reset key 12, feeding tape 3 by rotating take-up reel 2 rotates reel rotary shaft 6 to output a detection pulse, proportional to the rotational period from rotation detector 7 to rotation detection part 10 and counter part 11. Then, detection part 10 detects the rotational period of reel 2 while counter part 11 counts its rotational frequency and on the basis of their outputs, arithmetic part 13 calculates tape run time (t) from t=n(VR+B)/2, where (n) is the take-up number of the tape, VR is the rotational speed of the take- up reel and B is a constant, which can be obtained at detection part 10 by calculation in recording and reproduction. This time (t) is sent to display part 15 via key 14 to display the tape run time with accuracy.
COPYRIGHT: (C)1981,JPO&Japio
JP11555079A 1979-09-08 1979-09-08 Cassette tape running time display method Expired JPS6053392B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11555079A JPS6053392B2 (en) 1979-09-08 1979-09-08 Cassette tape running time display method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11555079A JPS6053392B2 (en) 1979-09-08 1979-09-08 Cassette tape running time display method

Publications (2)

Publication Number Publication Date
JPS5641568A true JPS5641568A (en) 1981-04-18
JPS6053392B2 JPS6053392B2 (en) 1985-11-25

Family

ID=14665308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11555079A Expired JPS6053392B2 (en) 1979-09-08 1979-09-08 Cassette tape running time display method

Country Status (1)

Country Link
JP (1) JPS6053392B2 (en)

Also Published As

Publication number Publication date
JPS6053392B2 (en) 1985-11-25

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