JPS5463812A - Tape locator - Google Patents
Tape locatorInfo
- Publication number
- JPS5463812A JPS5463812A JP12964677A JP12964677A JPS5463812A JP S5463812 A JPS5463812 A JP S5463812A JP 12964677 A JP12964677 A JP 12964677A JP 12964677 A JP12964677 A JP 12964677A JP S5463812 A JPS5463812 A JP S5463812A
- Authority
- JP
- Japan
- Prior art keywords
- reel
- rotation
- time period
- tape
- period
- 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
Links
Landscapes
- Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
Abstract
PURPOSE: To shorten the stand-by time period, which continues until the first rotation detecting pulse is obtained, by equidistantly arranging m number of test pieces on the outer circumference of a disc-shaped rotor, which is made coactive with a reel, and by making the stand-by time period equal to that required for rotation of 360/m degrees.
CONSTITUTION: Rotation detectors 16 and 17 are arranged on the drive shafts 14 and 15 of let-off reel 12 and take-up reel 13. On the other hand, m number of test pieces 19 are mounted equidistantly along the outer circumference of a rotor 18 so that the rotation pulses obtained by detection 20 are subjected to frequency division of 1/m at 21 and fed to a counter 22. This counter 22 is also supplied with the reference pulses from a calculating circuit 23 so that is counts the number of the reference pulses countained in the rotational period T. This counted value is fed to the calculating circuit 23 so that the ratio P of the tape used to the whole tape is deduced and indicated at 26. As a result, the time period from the start of the tape running operation to the detection of the first pulse is equal at longest to the period required for turning the reel by 360/m degrees.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12964677A JPS6030033B2 (en) | 1977-10-31 | 1977-10-31 | Tape position detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12964677A JPS6030033B2 (en) | 1977-10-31 | 1977-10-31 | Tape position detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5463812A true JPS5463812A (en) | 1979-05-23 |
JPS6030033B2 JPS6030033B2 (en) | 1985-07-13 |
Family
ID=15014655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12964677A Expired JPS6030033B2 (en) | 1977-10-31 | 1977-10-31 | Tape position detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6030033B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0488408A (en) * | 1990-07-25 | 1992-03-23 | Nec Corp | Information processor |
-
1977
- 1977-10-31 JP JP12964677A patent/JPS6030033B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6030033B2 (en) | 1985-07-13 |
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