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JPS5683875A - Tape residual quantity display circuit - Google Patents

Tape residual quantity display circuit

Info

Publication number
JPS5683875A
JPS5683875A JP16120379A JP16120379A JPS5683875A JP S5683875 A JPS5683875 A JP S5683875A JP 16120379 A JP16120379 A JP 16120379A JP 16120379 A JP16120379 A JP 16120379A JP S5683875 A JPS5683875 A JP S5683875A
Authority
JP
Japan
Prior art keywords
tape
pulses
residual quantity
output
pulse width
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
JP16120379A
Other languages
Japanese (ja)
Other versions
JPS6025825B2 (en
Inventor
Sakae Kato
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.)
Marantz Japan Inc
Original Assignee
Marantz Japan Inc
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 Marantz Japan Inc filed Critical Marantz Japan Inc
Priority to JP16120379A priority Critical patent/JPS6025825B2/en
Publication of JPS5683875A publication Critical patent/JPS5683875A/en
Publication of JPS6025825B2 publication Critical patent/JPS6025825B2/en
Expired legal-status Critical Current

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Abstract

PURPOSE: To simplify a circuit constitution, by using two monostable multivibrator circuits different in output pulse width to display the tape residual quantity.
CONSTITUTION: The rotation frequency of the supply reel of the tape recorder is detected optically, and the detection signal is subjected to waveform shaping in B, and rotation frequency change is substituted by pulses different in width by monostable multivibrators OSM1 and OSM2, and respective output pulses are integrated in D, and integrated values are given to meter display device E to display the tape residual quantity. The output pulse width of OSM1 is larger than the period of pulses output at the winding start of the tape, and the output pulse width of OSM2 is smaller than the period of the pulses output at the winding end of the tape.
COPYRIGHT: (C)1981,JPO&Japio
JP16120379A 1979-12-11 1979-12-11 Tape remaining amount display circuit Expired JPS6025825B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16120379A JPS6025825B2 (en) 1979-12-11 1979-12-11 Tape remaining amount display circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16120379A JPS6025825B2 (en) 1979-12-11 1979-12-11 Tape remaining amount display circuit

Publications (2)

Publication Number Publication Date
JPS5683875A true JPS5683875A (en) 1981-07-08
JPS6025825B2 JPS6025825B2 (en) 1985-06-20

Family

ID=15730548

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16120379A Expired JPS6025825B2 (en) 1979-12-11 1979-12-11 Tape remaining amount display circuit

Country Status (1)

Country Link
JP (1) JPS6025825B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4465193A (en) * 1981-08-31 1984-08-14 Laurel Bank Machine Co., Ltd. Note transfer mechanism in automatic money depositing and disbursing machine
US4517451A (en) * 1981-10-15 1985-05-14 Laurel Bank Machine Co., Ltd. Note transfer mechanism in automatic money depositing and disbursing machine
US4884698A (en) * 1985-06-17 1989-12-05 Hitachi, Ltd. Apparatus for handling sheets of paper

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4465193A (en) * 1981-08-31 1984-08-14 Laurel Bank Machine Co., Ltd. Note transfer mechanism in automatic money depositing and disbursing machine
US4517451A (en) * 1981-10-15 1985-05-14 Laurel Bank Machine Co., Ltd. Note transfer mechanism in automatic money depositing and disbursing machine
US4884698A (en) * 1985-06-17 1989-12-05 Hitachi, Ltd. Apparatus for handling sheets of paper
US5096067A (en) * 1985-06-17 1992-03-17 Hitachi, Ltd. Apparatus for handling sheets of paper

Also Published As

Publication number Publication date
JPS6025825B2 (en) 1985-06-20

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