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 Title: |
US3711641:
VELOCITY ADJUSTING SYSTEM
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| Country: |
US United States of America
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| Inventor: |
Palmer, Richard Claxton; Blawenburg, NJ
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| Assignee: |
RCA Corporation
other patents from RCA CORPORATION (466175) (approx. 7,929)
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| Published / Filed: |
1973-01-16
/ 1971-03-22
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| Application Number: |
US1971000126797
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| IPC Code: |
Advanced:
G11B 19/20;
G11B 21/03;
Core:
more...
IPC-7:
G11B 3/10;
G11B 25/04;
H04N 5/76;
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| ECLA Code: |
G11B21/03;
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| U.S. Class: |
Current:
386/015;
360/070;
360/073.03;
369/047.48;
369/047.49;
386/016;
G9B/021.007;
Original:
178/006.6TC;
178/006.6DD;
179/100.2K;
340/174.1B;
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| Field of Search: |
178/6.6 A,6.6 DD,6.6 TC,6.6 P
179/100.2 K
340/174.1 A,174.1 B
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| Priority Number: |
| 1971-03-22 |
US1971000126797 |
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| Abstract: |
Circuit means are provided for detecting velocity errors in the rotational speed of a turntable employed to rotate a video disc. The circuit means provide a corrective error signal which is processed and applied to an electro-mechanical transducer to which the pickup arm is mounted. The transducer imparts a corrective longitudinal motion to the pickup arm to maintain the relative velocity between the pickup stylus and the groove at a predetermined value.
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| Attorney, Agent or Firm: |
Whitacre, E. M. ;
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| Primary / Asst. Examiners: |
Britton, Howard W.;
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| INPADOC Legal Status: |
None
Family Legal Status Report
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| Family: |
Show 13 known family members
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First Claim:
Show all 16 claims |
1. A velocity adjusting system for maintaining a predetermined relative velocity between a record medium and a tracking stylus, comprising:
- means for moving said record medium at a predetermined velocity, said record medium having a groove with information recorded therein,
- said tracking stylus positioned in said record medium groove for detecting signals recorded on said record medium,
- means for developing a correction signal when the velocity of said record medium relative to said tracking stylus deviates from said predetermined relative velocity, and
- electro-mechanical transducer means coupled to said tracking stylus to vary the physical position of said tracking stylus with respect to said record medium groove to correct for deviations of said velocity from said
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 30 U.S. patent(s) that reference this one
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