Patent EP0358597A2 successfully refreshed from Google Patents.
US3603770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape buffer system for incremental plotter
Assignee: TRANS CONTROLS Inc
•
Filing: 1969-01-06
•
Granted: 1971-09-07
•
Expires: 1989-01-06
Abstract
Abstract Magnetic tape buffer equipment for use between a digital computer and an incremental plotter, including a tape loop, storage and forward-reverse drive therefor, writing and reading stations and error-checking circuits operating in a system which provides for periodic checks and correction, if required, of the plotter pen position in order that errors in the plotter display are not propagated throughout the plot.
Inventors
- 👤 Edward R Reins Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:50
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/06; G06F3/0601; G06K; G06K15/00; G06K15/22; G06F3/0628; G06F3/0655; G06F3/0656
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
153 words
A buffer system for use between a source of digital signals and an incremental plotter responsive to such signals, the source capable of transmitting commands directing the plotter increments interleaved with comMands indicating the correct plot coordinator and the plotter responsive to increments commands only, comprising: means to distinguish between the two types of command; means responsive to said distinguishing means to transmit increment commands to the plotter; accumulators responsive to said distinguishing means to generate counts representing the sums of sequential increment commands; comparators responsive to said distinguishing means and said accumulators to compare the coordinates of the coordinate command of said distinguishing means with the counts of said accumulators; gating means for said transmitting means operative as an equality condition of said comparators; and updating means for said accumulators operative as an inequality condition of said comparators to provide agreement of the counts thereof with the coordinates of the coordinate command.
Claim 2
Dependent Claim
153 words
A buffer system for use between a source of digital signals and an incremental plotter responsive to such signals, the source capable of transmitting commands directing the plotter increments interleaved with comMands indicating the correct plot coordinator and the plotter responsive to increments commands only, comprising: means to distinguish between the two types of command; means responsive to said distinguishing means to transmit increment commands to the plotter; accumulators responsive to said distinguishing means to generate counts representing the sums of sequential increment commands; comparators responsive to said distinguishing means and said accumulators to compare the coordinates of the coordinate command of said distinguishing means with the counts of said accumulators; gating means for said transmitting means operative as an equality condition of said comparators; and updating means for said accumulators operative as an inequality condition of said comparators to provide agreement of the counts thereof with the coordinates of the coordinate command.
Claim 3
Dependent Claim
20 words
The system of claim 1 and means responsive to said updating means to generate correction increment commands to the plotter.
Claim 4
Dependent Claim
19 words
The system of claim 2 and means responsive to said parity detector to inhibit operation of said transmitting means.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |