[go: up one dir, main page]

JPS5611670A - Detector for tape amount - Google Patents

Detector for tape amount

Info

Publication number
JPS5611670A
JPS5611670A JP8373579A JP8373579A JPS5611670A JP S5611670 A JPS5611670 A JP S5611670A JP 8373579 A JP8373579 A JP 8373579A JP 8373579 A JP8373579 A JP 8373579A JP S5611670 A JPS5611670 A JP S5611670A
Authority
JP
Japan
Prior art keywords
tape
time
residual amount
revolution
supply 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.)
Pending
Application number
JP8373579A
Other languages
Japanese (ja)
Inventor
Keizo Ihara
Hiromichi Sugiyama
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.)
Teac Corp
Original Assignee
Teac Corp
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 Teac Corp filed Critical Teac Corp
Priority to JP8373579A priority Critical patent/JPS5611670A/en
Publication of JPS5611670A publication Critical patent/JPS5611670A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To enable the detection of accurate residual amount, even if the total length is unclear and the tape is loaded on the way, by determining the residual amount of tape based on the detection time in response to one revolution of the supply reel by means of clock pulse count.
CONSTITUTION: The rotating body 12 with magnet poles is incorporatedly turned with the supply reel shaft 2 and the counter 15 is reset every one revolution of the supply reel winding frame 2 via the magnetic head 13. Accordingly, the counter 15 counts the clock pulse from the clock signal generating circuit 14 to accurately detect the time t based on equation I required for one revolution of the frame 2 in proportion to the diameter r of the tape winding on the frame 2. Further, the tape residual time T is calculated and determined based on equation II proportional to the time t depending on the time t via the operating circuit 16 and it is displayed on the tape residual amount display circyit 17. As a result, if the total length is unclear, or the tape is loaded on the way, the tape residual amount can accurately be detected.
COPYRIGHT: (C)1981,JPO&Japio
JP8373579A 1979-07-03 1979-07-03 Detector for tape amount Pending JPS5611670A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8373579A JPS5611670A (en) 1979-07-03 1979-07-03 Detector for tape amount

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8373579A JPS5611670A (en) 1979-07-03 1979-07-03 Detector for tape amount

Publications (1)

Publication Number Publication Date
JPS5611670A true JPS5611670A (en) 1981-02-05

Family

ID=13810776

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8373579A Pending JPS5611670A (en) 1979-07-03 1979-07-03 Detector for tape amount

Country Status (1)

Country Link
JP (1) JPS5611670A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63288491A (en) * 1987-05-19 1988-11-25 Takeshi Hiramatsu Remaining time counting method for image/sound recording tape
US5659833A (en) * 1995-10-30 1997-08-19 Anacomp, Inc. Reloadable film canister system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63288491A (en) * 1987-05-19 1988-11-25 Takeshi Hiramatsu Remaining time counting method for image/sound recording tape
US5659833A (en) * 1995-10-30 1997-08-19 Anacomp, Inc. Reloadable film canister system

Similar Documents

Publication Publication Date Title
JPS54145513A (en) Recorder-reproducer
JPS5492311A (en) Winding quantity display system of magnetic tape
JPS5611670A (en) Detector for tape amount
JPS55139679A (en) Tape end previous-noticing unit
JPS57189588A (en) Speed detecting system
JPS567079A (en) Electronic time-keeper
ZA200501303B (en) Apparatus for detecting tampering with a utility meter
JPS57138074A (en) Detector for tape winding amount
JPS55122104A (en) Device for measuring length
JPS5458478A (en) Rotation detector
JPS54145118A (en) Winding quantity measuring system of magnetic tape
JPS5589787A (en) Analog alarm watch
JPS5798454A (en) Residual amount detector for roll-shaped recording material
JPS5680862A (en) Remaining time display system of cassette tape
JPS5492312A (en) Tape position display means of cassette tape recorder
JPS5453515A (en) Tape recorder
JPS6488985A (en) Tape residual quantity display device
JPS57109150A (en) Tape run detecting mechanism for cassette tape recorder
JPS54109891A (en) Radiation monitoring device
JPS5564677A (en) Display unit for tape run time
JPS55119003A (en) Device for measuring and indicating length of fishing line or the like
JPS5532262A (en) Display circuit for rest time of magnetic tape
JPS5690478A (en) Display circuit of tape recorder
JPS5468213A (en) Display device of remaining quantity of tapes
JPS5463811A (en) Tape running time detector