US3905463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control element for electrical reading or recording device
Assignee: Bunker Ramo Corp
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Filing: 1973-02-12
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Granted: 1975-09-16
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Expires: 1993-02-12
Abstract
Abstract This invention relates to an element for controlling the reading or recording of information with an electrically controlled device. The element includes a track having a normal pattern of sync markings spaced from each other by a predetermined distance and at least one area having a sync pattern differing from the normal pattern. The area having a different sync pattern may not have a marking appear within a predetermined distance of a given marking or may have a distance different from said predetermined distance between selected ones of the markings. All of the sync markings on the track are scanned during the reading or recording of each line of information characters and are utilized for generating sync pulses which control the reading or recording of a stroke of an information character. The variable spacing of the sync markings on the sync track may be utilized to vary the size of the characters recorded, to justify characters of different size, to protect selected areas of the media being recorded on, to encode the information, or for other control purposes.
Inventors
- 👤 James J Boyce
- 👤 Giugno Angelo J Di
- 👤 James V Masi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:38
CPC Classifications
B; B41; B41J; B41J19/00; B41J19/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
189 words
In an electrically controlled recording device for recording a line of characters on a recording medium, a recording head movable along a line relative to said medium and operable in response to enabling synchronization signals applied thereto for producing selected strokes along said lines so that each character on the line is formed from a plurality of said strokes, a synchronization track having spaced synchronization marks located in a fixed position relative to said recording medium, and detecting means for detecting said synchronization marks during relative movement of said head and said medium for producing a synchronization signal in response to each detected mark, each synchronization signal being controllingly coupled to said recording head for enabling said head to produce a stroke at a location along said line corresponding to the location of said head when the synchronization signal is produced, said synchronization marks being spaced on said track so that the strokes produced by said recording head for a character at a first location along said line will be spaced differently from those produced by said recording head for a character at a second location along said line.
Claim 2
Dependent Claim
189 words
In an electrically controlled recording device for recording a line of characters on a recording medium, a recording head movable along a line relative to said medium and operable in response to enabling synchronization signals applied thereto for producing selected strokes along said lines so that each character on the line is formed from a plurality of said strokes, a synchronization track having spaced synchronization marks located in a fixed position relative to said recording medium, and detecting means for detecting said synchronization marks during relative movement of said head and said medium for producing a synchronization signal in response to each detected mark, each synchronization signal being controllingly coupled to said recording head for enabling said head to produce a stroke at a location along said line corresponding to the location of said head when the synchronization signal is produced, said synchronization marks being spaced on said track so that the strokes produced by said recording head for a character at a first location along said line will be spaced differently from those produced by said recording head for a character at a second location along said line.
Claim 3
Dependent Claim
32 words
The invention in accordance with claim 1, wherein synchronization marks are provided on said track only at locations at which it is desired that a stroke be produced by said recording head.
Claim 4
Dependent Claim
61 words
The invention in accordance with claim 1, wherein the recording head produces visual strokes on said medium, and wherein the synchronization marks corresponding to the character at said second location are spaced closer together than the synchronization marks corresponding to the character at said first location so as to thereby cause said recording means to produce characters having different recording densities.
Claim 5
Dependent Claim
59 words
The invention in accordance with claim 1, wherein the recording head is adapted to produce non-visual strokes, and wherein the synchronization marks provided on said track corresponding to at least one character are located so that the recording head will produce different spacings between the strokes of the character, thereby providing for recording of a character in coded form.
Claim 6
Dependent Claim
66 words
The invention in accordance with claim 1, wherein said recording head moves more slowly during acceleration and deceleration than when moving at normal speed, and wherein the synchronization marks provided at the beginning and end of said track are spaced closer together than those at the center of the track in order to compensate for the slower speed of the recording head during acceleration and deceleration.
Claim 7
Dependent Claim
217 words
In a high speed electrically controlled recording device for recording a line of characters on a recording medium, a recording head movable in either direction along a line relative to said medium and operable in response to enabling synchronization signals applied thereto during continuous movement of the head in either direction for producing selected strokes along said line so that each character on the line is formed from a predetermined plurality of said strokes, a synchronization track having spaced synchronization marks located in a fixed position relative to said recording medium and, detecting means for detecting said synchronization marks during relative movement of said head and said medium and for producing a synchronization signal in response to each detected mark, each synchronization signal being applied to said recording head for producing a stroke at a location along said line corresponding to the location of said head when the synchronization signal is produced, said detecting means being responsive to the leading edge of each synchronization mark during relative movement of said head in either direction, and said synchronization marks having a width chosen in conjunction with the speed of relative movement of said head so that each stroke will be recorded at its proper position along a line regardless of the direction of movement of the recording head.
Claim 8
Dependent Claim
217 words
In a high speed electrically controlled recording device for recording a line of characters on a recording medium, a recording head movable in either direction along a line relative to said medium and operable in response to enabling synchronization signals applied thereto during continuous movement of the head in either direction for producing selected strokes along said line so that each character on the line is formed from a predetermined plurality of said strokes, a synchronization track having spaced synchronization marks located in a fixed position relative to said recording medium and, detecting means for detecting said synchronization marks during relative movement of said head and said medium and for producing a synchronization signal in response to each detected mark, each synchronization signal being applied to said recording head for producing a stroke at a location along said line corresponding to the location of said head when the synchronization signal is produced, said detecting means being responsive to the leading edge of each synchronization mark during relative movement of said head in either direction, and said synchronization marks having a width chosen in conjunction with the speed of relative movement of said head so that each stroke will be recorded at its proper position along a line regardless of the direction of movement of the recording head.
Claim 9
Dependent Claim
203 words
In an electrically controlled recording device for recording a line of characters on a recording medium, a recording head movable along a line relative to said medium and operable in response to enabling synchronizing signals applied thereto for producing selected strokes along said line so that each character on the line is formed from a predetermined plurality of said strokes, a synchronization track having spaced synchronization marks located in a fixed position relative to said recording medium and, detecting means coupled to said recording head for detecting said synchronization marks during relative movement of said head and said medium and for producing a synchronization signal in response to each detected mark, each synchronization signal being applied to said recording head for producing a stroke at a location along said line corresponding to the location of said head when the synchronization signal is produced, a shutter relatively movable with respect to said track for preventing a selected plurality of said synchronization marks from being detected by said detecting means, and electrical circuit means to which said synchronization signals are applied for producing an output signal when a Synchronization signal is not received within a predetermined period of time from a previously received synchronization signal.
Claim 10
Dependent Claim
203 words
In an electrically controlled recording device for recording a line of characters on a recording medium, a recording head movable along a line relative to said medium and operable in response to enabling synchronizing signals applied thereto for producing selected strokes along said line so that each character on the line is formed from a predetermined plurality of said strokes, a synchronization track having spaced synchronization marks located in a fixed position relative to said recording medium and, detecting means coupled to said recording head for detecting said synchronization marks during relative movement of said head and said medium and for producing a synchronization signal in response to each detected mark, each synchronization signal being applied to said recording head for producing a stroke at a location along said line corresponding to the location of said head when the synchronization signal is produced, a shutter relatively movable with respect to said track for preventing a selected plurality of said synchronization marks from being detected by said detecting means, and electrical circuit means to which said synchronization signals are applied for producing an output signal when a Synchronization signal is not received within a predetermined period of time from a previously received synchronization signal.
Claim 11
Dependent Claim
20 words
The invention in accordance with claim 7, wherein said predetermined period of time is at least three synchronization signal intervals.
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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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |