JPS5562570A - Display system for tape running time of tape recorder - Google Patents

Display system for tape running time of tape recorder

Info

Publication number
JPS5562570A
JPS5562570A JP13584978A JP13584978A JPS5562570A JP S5562570 A JPS5562570 A JP S5562570A JP 13584978 A JP13584978 A JP 13584978A JP 13584978 A JP13584978 A JP 13584978A JP S5562570 A JPS5562570 A JP S5562570A
Authority
JP
Japan
Prior art keywords
tape
time
rotation speed
micro computer
reel
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
JP13584978A
Other languages
Japanese (ja)
Other versions
JPS638551B2 (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 JP13584978A priority Critical patent/JPS5562570A/en
Priority to US06/090,610 priority patent/US4338645A/en
Publication of JPS5562570A publication Critical patent/JPS5562570A/en
Publication of JPS638551B2 publication Critical patent/JPS638551B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to display the tape residual quantity time and the tape using time with a high precision by detecting rotation angle speeds of a supply reel and a winding reel and inputting the tape running speed, the all tape time, etc., to a micro computer together with detected them.
CONSTITUTION: In supply reel rotation speed detector 21, the light of lamp 22 passes through slit 23 and is received by light receiving transistor 24 to obtain rotation speed detection signal 25. Similarly, the rotation speed detection signal of a winding reel is obtained by winding reel rotation speed detector 26. These signals 25 and 27 are inputted micro computer 31. Micro computer 31 obtains the number of reference clocks inputted during one rotation of the reel to obtain the rotation speed. Meanwhile, the hub diameter of the supply reel and the all tape time are supplied to micro computer 31 and are processed to calculate the residual quantity time, and this value is displayed as a time on digital display equipment 32. Then, the using time is displayed selectively by selector switch 29.
COPYRIGHT: (C)1980,JPO&Japio
JP13584978A 1978-11-06 1978-11-06 Display system for tape running time of tape recorder Granted JPS5562570A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP13584978A JPS5562570A (en) 1978-11-06 1978-11-06 Display system for tape running time of tape recorder
US06/090,610 US4338645A (en) 1978-11-06 1979-11-02 Tape running time indication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13584978A JPS5562570A (en) 1978-11-06 1978-11-06 Display system for tape running time of tape recorder

Publications (2)

Publication Number Publication Date
JPS5562570A true JPS5562570A (en) 1980-05-12
JPS638551B2 JPS638551B2 (en) 1988-02-23

Family

ID=15161194

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13584978A Granted JPS5562570A (en) 1978-11-06 1978-11-06 Display system for tape running time of tape recorder

Country Status (1)

Country Link
JP (1) JPS5562570A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143772A (en) * 1981-02-27 1982-09-06 Pioneer Electronic Corp Tape amount detecting system
JPS5826374A (en) * 1981-07-24 1983-02-16 Onkyo Corp Display for amount of tape

Citations (1)

* 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

Patent Citations (1)

* 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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57143772A (en) * 1981-02-27 1982-09-06 Pioneer Electronic Corp Tape amount detecting system
JPH0226313B2 (en) * 1981-02-27 1990-06-08 Pioneer Electronic Corp
JPS5826374A (en) * 1981-07-24 1983-02-16 Onkyo Corp Display for amount of tape
JPH0241103B2 (en) * 1981-07-24 1990-09-14 Onkyo Kk

Also Published As

Publication number Publication date
JPS638551B2 (en) 1988-02-23

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