JPS5687273A - Automatic head leading device - Google Patents
Automatic head leading deviceInfo
- Publication number
- JPS5687273A JPS5687273A JP16424479A JP16424479A JPS5687273A JP S5687273 A JPS5687273 A JP S5687273A JP 16424479 A JP16424479 A JP 16424479A JP 16424479 A JP16424479 A JP 16424479A JP S5687273 A JPS5687273 A JP S5687273A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- amplification factor
- travelling speed
- tape
- calculated
- 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 vary settig time of detection for both a silent part and an amplifying part of a detection sensitivity setting amplifier by a microcomputer and in accordance with the variation of the travelling speed of a magnetic tape which is driven in a high speed.
CONSTITUTION: In the microcomputer CPU, the output pulses of the rotation detector TD are counted with every fixed time decided by the time intervals of the output pulses of the reference signal generator RP. According to the number of pulses, the travelling speed is calculated for the magnetic tape. Then the amplification factor is calculated for the detedtion sensitivity setting amplifier A2 based on a relating formula stored previously. Based on this amplification factor of the amplifier, the signals are delivered to give a selective ON to the 1stW6th switches S1W S6. A compensation is given to the amplification factor of the amplifier A2 according to the travelling speed of the magetic tape which varies according to the tape diameter of the take-up side reel. Thus the noise of the silent part is detected at a certain level and then applied to the 1st transistor Q1 to eliminate the malfunction.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16424479A JPS5687273A (en) | 1979-12-17 | 1979-12-17 | Automatic head leading device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16424479A JPS5687273A (en) | 1979-12-17 | 1979-12-17 | Automatic head leading device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5687273A true JPS5687273A (en) | 1981-07-15 |
JPS6243260B2 JPS6243260B2 (en) | 1987-09-12 |
Family
ID=15789408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16424479A Granted JPS5687273A (en) | 1979-12-17 | 1979-12-17 | Automatic head leading device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5687273A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10935612B2 (en) | 2018-08-20 | 2021-03-02 | Allegro Microsystems, Llc | Current sensor having multiple sensitivity ranges |
US11567108B2 (en) | 2021-03-31 | 2023-01-31 | Allegro Microsystems, Llc | Multi-gain channels for multi-range sensor |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7768083B2 (en) | 2006-01-20 | 2010-08-03 | Allegro Microsystems, Inc. | Arrangements for an integrated sensor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5480714U (en) * | 1977-11-18 | 1979-06-08 |
-
1979
- 1979-12-17 JP JP16424479A patent/JPS5687273A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5480714U (en) * | 1977-11-18 | 1979-06-08 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10935612B2 (en) | 2018-08-20 | 2021-03-02 | Allegro Microsystems, Llc | Current sensor having multiple sensitivity ranges |
US11567108B2 (en) | 2021-03-31 | 2023-01-31 | Allegro Microsystems, Llc | Multi-gain channels for multi-range sensor |
Also Published As
Publication number | Publication date |
---|---|
JPS6243260B2 (en) | 1987-09-12 |
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