US3829892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic tracking matching system
Assignee: Panasonic Holdings Corp
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Filing: 1973-01-08
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Granted: 1974-08-13
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Expires: 1993-01-08
Abstract
Abstract Control signals with a predetermined level are recorded in parallel with the information signal recording tracks which are recorded upon a recording medium being in parallel with each other, spaced apart from each other by a predetermined distance and inclined at an angle relative to the direction of the transport of the recording medium. The speed of the recording medium is so controlled that the relative position of the control signals relative to the reproducing head or heads or the degree of overlap of the control signals over the information signal recording track may be maintained constant and the level of the control signals reproduced may be maintained constant when the control signals are reproduced by the information signal reproducing head or heads.
Inventors
- 👤 M Nagahiro
- 👤 M Deguchi
- 👤 A Kuroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:13
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B15/00; G11B15/18; G11B15/46; G11B15/467; G11B15/4671; G11B15/4672; G11B15/4673; G11B15/4675; G11B15/4676; G11B15/4677; G11B15/60; G11B15/602; G11B21/00; G11B21/02; G11B21/10; G11B21/103
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
203 words
An automatic tracking matching system for use with a device for reproducing the information recorded in the tracks in the predetermined direction comprising a. a recording medium upon which the control signals of a predetermined level which will not affect adversely the reproduced information signals are recorded in a direction parallel with the recording direction of an information signal recording track having a predetermined width and in predetermined relation therewith; b. driving means for transporting said recording medium in a given direction; c. means for simultaneously reproducing said information and control signals comprising a plurality of reproducing heads, each reproducing head positioned to simultaneously scan both the information and control signal tracks; d. means for driving said reproducing means in a direction transverse to said given direction and alonng a path that passes each reproducing head simultaneously adjacent to both the recorded information track and the control signal track; e. means for separating said control signals from said reproduced signals; and f. control means for controlling the relative speed between said recording medium drivinng means and said means for driving said reproducing means in response to said separated control signals so that the level of the control signals may be always maintained constant.
Claim 2
Dependent Claim
203 words
An automatic tracking matching system for use with a device for reproducing the information recorded in the tracks in the predetermined direction comprising a. a recording medium upon which the control signals of a predetermined level which will not affect adversely the reproduced information signals are recorded in a direction parallel with the recording direction of an information signal recording track having a predetermined width and in predetermined relation therewith; b. driving means for transporting said recording medium in a given direction; c. means for simultaneously reproducing said information and control signals comprising a plurality of reproducing heads, each reproducing head positioned to simultaneously scan both the information and control signal tracks; d. means for driving said reproducing means in a direction transverse to said given direction and alonng a path that passes each reproducing head simultaneously adjacent to both the recorded information track and the control signal track; e. means for separating said control signals from said reproduced signals; and f. control means for controlling the relative speed between said recording medium drivinng means and said means for driving said reproducing means in response to said separated control signals so that the level of the control signals may be always maintained constant.
Claim 3
Dependent Claim
40 words
An automatic tracking matching system as defined in claim 1 wherein said reproducing means comprises a number of n rotary elements, and said control signals are recorded for every n information signal recording tracks in contact therewith where n integer.
Claim 4
Dependent Claim
21 words
An automatic tracking matching system as defined in claim 1 wherein said control signals are superposed upon said information signal track.
Claim 5
Dependent Claim
55 words
An automatic tracking matching system as defined in claim 1 wherein said control signal tracks are formed on both sides of said information signal track, and the frequency of the control signals recorded in one of said control signal tracks is different from that of the control signals recorded in the other control signal track.
Claim 6
Dependent Claim
41 words
An automatic tracking matching system as defined in claim 1 wherein said control signal is in the form of the control signals recorded over the whole surface of said recording medium but partly erased in parallel with said information signal track.
Claim 7
Dependent Claim
30 words
An automatic tracking matching system as defined in claim 1 wherein the width of said information signal reproducing means is not less than the width of said information signal track.
Claim 8
Dependent Claim
21 words
An automatic tracking matching system as defined in claim 1 wherein said control signal is shorter than said information signal track.
Claim 9
Dependent Claim
53 words
An automatic tracking matching system as defined in claim 1 wherein said given direction is a rotational direction; the direction transverse to said given direction is radial with respect to the rotational direction; both the control tracks and the information tracks are recorded in a spiral pattern upon a substantially planar recording medium.
Claim 10
Dependent Claim
55 words
An automatic tracking matching system as defined in claim 1 wherein said given direction is a rotational direction; the direction transverse to said given direction is radial with respect to the rotational direction; both the control tracks and the information tracks are recorded in a pattern of concentric circles upon a substantially planar recording medium.
Claim 11
Dependent Claim
55 words
An automatic tracking matching system as defined in claim 1 wherein said given diRection is a rotational direction about a given axis; the direction transverse to said given direction is parallel to said given axis; both the control tracks and the information tracks are recorded in a helical pattern upon a cylindrical drum-type recording medium.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |