US3876990A
Expired / Lapsed
US
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Methods of storing information using arrays of multiple spot patterns
Assignee: Individual
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Filing: 1973-07-05
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Granted: 1975-04-08
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Expires: 1993-07-05
Abstract
Abstract The systems of this invention involve the storage of information on a record medium in the form of patterns of spots arrayed along one or more tracks, the patterns are spaced apart a distance which is a fraction of the length of the pattern so that there is partial overlap of the patterns along the track. The patterns may be uniformly or non-uniformly spaced spots, and the patterns can be sequentially the same or different patterns. All of the spots in the patterns have the same character, and are presented to a reading means sequentially. The spacing of patterns along the track may be uniform or variable. Each pattern may represent a single bit, or a single character.
Inventors
- 👤 Daniel Silverman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:09
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/02; G03; G03H; G03H1/00; G03H1/26; G06; G06K; G06K7/00; G06K7/10; G11B5/00; G11B5/02; G11B7/00; G11B7/004; G11B7/0065; G11B5/008; G11B5/00813
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
145 words
The method of storing information in the form of patterns of spaced spots on a record medium comprising the steps of: a. recording along a track on said record medium a first unique pattern of spaced spots, said pattern of spots of longitudinal dimension D along said track, said spots spaced along said track; b. advancing said record medium in the direction of said track by an incremental distance d, where d = D/K, where K has a value greater than 1; and c. recording a second unique pattern of spaced spots along said track, each of said first and said second patterns corresponding to and uniquely indicative of a discrete unit of information and adapted to be compressed and detected by a reading means to single-valued point signals representative of said discrete units of information, all spots in said patterns of the same character.
Claim 2
Independent Claim
145 words
The method of storing information in the form of patterns of spaced spots on a record medium comprising the steps of: a. recording along a track on said record medium a first unique pattern of spaced spots, said pattern of spots of longitudinal dimension D along said track, said spots spaced along said track; b. advancing said record medium in the direction of said track by an incremental distance d, where d = D/K, where K has a value greater than 1; and c. recording a second unique pattern of spaced spots along said track, each of said first and said second patterns corresponding to and uniquely indicative of a discrete unit of information and adapted to be compressed and detected by a reading means to single-valued point signals representative of said discrete units of information, all spots in said patterns of the same character.
Claim 3
Dependent Claim
110 words
The method as in claim 1 including the additional steps of; d. after step a) and before step b) recording a third unique pattern of spaced spots of dimension D; and e. after step c) recording a fourth unique pattern of spaced spots of dimension D; f. said first and third patterns being different from said other being substantially totally superimposed and adapted to be compressed by said reading means to different, independently readable single-valued point signals and g. said second and fourth patterns being different from each other, and being substantially totally superimposed and adapted to be compressed by said reading means to different, independently readable single-valued point signals.
Claim 4
Dependent Claim
24 words
The method as in claim 1 in which said first and second patterns are the same and each represents the same unit of information.
Claim 5
Dependent Claim
18 words
The method as in claim 1 in which said first and second patterns are different swept frequency patterns.
Claim 6
Dependent Claim
21 words
The method as in claim 1 in which said first and second patterns are different portions of Fresnel Zone Plate patterns.
Claim 7
Dependent Claim
25 words
The method as in claim 1 in which said first and second patterns are different hologram patterns each one recorded with a different reference beam.
Claim 8
Dependent Claim
39 words
The method as in claim 1 in which said first pattern is a linear grating having a first spatial frequency, and said second pattern is a linear grating having a second spatial frequency different from said first spatial frequency.
Claim 9
Dependent Claim
37 words
The method as in claim 2 in which said first and third patterns are recorded in the same first unique recording area, and said second and fourth patterns are recorded in the same second unique recording area.
Claim 10
Dependent Claim
20 words
The method as in claim 2 in which all four patterns comprise linear gratings each of a different spatial frequency.
Claim 11
Independent Claim
153 words
The method of storing information in the form of patterns of spaced spots on a record medium comprising the steps of; a. recording along a track on said record medium a first plurality of different unique patterns of spaced spots, each pattern of longitudinal dimension D, with said dimension D directed along said track, said patterns recorded in the same unique recording area of dimension D, each of said patterns indicative of a different discrete unit of information and adapted to be compressed by a reading means to a single-valued point signal, each of said signals from each of said patterns adapted to be read independently of each of the other signals; b. incrementally advancing said record medium in the direction of said track a distance d, where d = D/K, where K has a value greater than 1, and c. repeating step a) with a second plurality of different unique spot patterns.
Claim 12
Independent Claim
153 words
The method of storing information in the form of patterns of spaced spots on a record medium comprising the steps of; a. recording along a track on said record medium a first plurality of different unique patterns of spaced spots, each pattern of longitudinal dimension D, with said dimension D directed along said track, said patterns recorded in the same unique recording area of dimension D, each of said patterns indicative of a different discrete unit of information and adapted to be compressed by a reading means to a single-valued point signal, each of said signals from each of said patterns adapted to be read independently of each of the other signals; b. incrementally advancing said record medium in the direction of said track a distance d, where d = D/K, where K has a value greater than 1, and c. repeating step a) with a second plurality of different unique spot patterns.
Claim 13
Dependent Claim
55 words
The method as in claim 10 in which said first plurality of unique spot patterns are different from each other, and said second plurality of unique spot patterns are different from each other, but at least one pattern of said second plurality is the same pattern as one pattern of said first plurality of patterns.
Claim 14
Dependent Claim
24 words
The method as in claim 10 in which said of first and second plurality of patterns comprises a plurality of different swept frequency patterns.
Claim 15
Dependent Claim
26 words
The method as in claim 10 in which each of said first and second plurality of patterns comprises a plurality of different Fresnel Zone Plate patterns.
Claim 16
Dependent Claim
48 words
The method as in claim 10 in which each of said first and second plurality of patterns comprises a plurality of hologram patterns, each hologram pattern being of a different plurality of spaced point subjects, and including the steps of recording each hologram with a different reference beam.
Claim 17
Dependent Claim
15 words
The method as in claim 1 in which successive values of d are the same.
Claim 18
Dependent Claim
14 words
The method as in claim 1 in which successive values of d are different.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |