US3854660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system for multiple tape readers in an n/c system
Assignee: Bendix Corp
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Filing: 1973-09-21
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Granted: 1974-12-17
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Expires: 1993-09-21
Abstract
Abstract The invention is directed to a system for controlling multiple tape readers in a Numerical Control System. When use of the tape on one tape reader is completed, another tape reader is actuated and placed into service. During the use of the second tape reader, the exhausted tape is rewound onto the first tape reel by the first tape reader. Also, while one tape reader is enabled, all others are disabled to prevent conflict between the various tape readers. The system, therefore, includes one control channel per tape reader and serves to prevent the simultaneous enabling of more than one tape reader. Thus, a tape the use of which is no longer required, can be rewound and replaced while another tape is in use to thereby greatly increase the operating time of the N/C system.
Inventors
- 👤 H Henegar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:22
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/06; G06F3/0601; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/408; G06K; G06K13/00; G06K13/18; G05B2219/00; G05B2219/30; G05B2219/36; G05B2219/36374; G06F3/0668; G06F3/0671; G06F3/0673; G06F3/0682
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
225 words
In a numerical control system having a data storage medium for receiving data from coded records through a plurality of selectively actuated tape readers, a tape reader control System for selectively controlling said tape readers so that one of said tape readers can be actuated to supply data to said storage medium simultaneously with the rewinding of another of said tape readers and the deactuation of the remaining of said tape readers, said tape reader control system comprising: first means receiving particular command signals for selectively generating an enable signal and a disable signal in response to said command signals, said enable signal placing a tape reader in condition for receiving other commands and said disable signal prevents a tape reader from receiving other commands; second means receiving other particular command signals for selectively generating forward and reverse signals in response to said other command signals; third means receiving tape channel perforation signals for providing actuating signals indicating channel perforation conditions of a tape passing through one of said tape readers; and fourth means for generating a stop signal, said fourth means receiving said disable signal, said reverse signal and the output of said third means as enabling signals so that said stop signal is generated upon the failure of any one of said enabling signals to thereby effect the disabling of said tape reader.
Claim 2
Dependent Claim
225 words
In a numerical control system having a data storage medium for receiving data from coded records through a plurality of selectively actuated tape readers, a tape reader control System for selectively controlling said tape readers so that one of said tape readers can be actuated to supply data to said storage medium simultaneously with the rewinding of another of said tape readers and the deactuation of the remaining of said tape readers, said tape reader control system comprising: first means receiving particular command signals for selectively generating an enable signal and a disable signal in response to said command signals, said enable signal placing a tape reader in condition for receiving other commands and said disable signal prevents a tape reader from receiving other commands; second means receiving other particular command signals for selectively generating forward and reverse signals in response to said other command signals; third means receiving tape channel perforation signals for providing actuating signals indicating channel perforation conditions of a tape passing through one of said tape readers; and fourth means for generating a stop signal, said fourth means receiving said disable signal, said reverse signal and the output of said third means as enabling signals so that said stop signal is generated upon the failure of any one of said enabling signals to thereby effect the disabling of said tape reader.
Claim 3
Dependent Claim
34 words
The system of claim 1 wherein said particular command signals include a tape reader control system address, and a disable command signal; and said other particular command signals include forward and reverse command signals.
Claim 4
Dependent Claim
35 words
The system of claim 2 wherein said first means includes bistable circuit means for generating said enable signal in response to said control system address and said disable signal in response to said disable command.
Claim 5
Dependent Claim
34 words
The system of claim 2 wherein said second means includes bistable circuit means for producing said forward signal in response to said forward command, and said reverse signal in response to said reverse command.
Claim 6
Dependent Claim
34 words
The system of claim 3 wherein said second means includes bistable circuit means for producing said forward signal in response to said forward command, and said reverse signal in response to said reverse command.
Claim 7
Dependent Claim
47 words
The system of claim 2 wherein said tape reader control system address is composed of at least two address commands; and wherein second means is responsive to one of said address commands so that said forward and said reverse signals are dependent upon said one address command.
Claim 8
Dependent Claim
180 words
A tape reader control system for permitting the use of at least two tape reels so that one of said tape reels can be rewound while another of said tape reels is providing input data to the memory means of a numerical control system, said numerical control system including a plurality of tape readers and one of said tape reader control systems for each of said tape readers; said tape reader control systems each including: a set of input leads for respectively receiving address commands, a disable command, a forward command, a reverse command, and a stop signal; bistable circuit means for producing an enable signal in response to said address commands, and a disable signal in response to said disable command; and logic means receiving said forward command, said reverse command and at least one of said address commands for selectively producing a forward signal in accordance with the simultaneous presence of said one address command and said forward command and a reverse signal in accordance with the simultaneous presence of said one address command and said reverse command.
Claim 9
Dependent Claim
180 words
A tape reader control system for permitting the use of at least two tape reels so that one of said tape reels can be rewound while another of said tape reels is providing input data to the memory means of a numerical control system, said numerical control system including a plurality of tape readers and one of said tape reader control systems for each of said tape readers; said tape reader control systems each including: a set of input leads for respectively receiving address commands, a disable command, a forward command, a reverse command, and a stop signal; bistable circuit means for producing an enable signal in response to said address commands, and a disable signal in response to said disable command; and logic means receiving said forward command, said reverse command and at least one of said address commands for selectively producing a forward signal in accordance with the simultaneous presence of said one address command and said forward command and a reverse signal in accordance with the simultaneous presence of said one address command and said reverse command.
Claim 10
Dependent Claim
65 words
The system of claim 7 further including means for receiving tape channel perforation signals indicating that selected conditions are present on the tape under control and generating enabling signals in response to said tape channel perforation signals; and stop signal generation means responsive to said enabling signals, said reverse signal, and said disable signal for providing a stop signal to the tape reader under control.
Claim 11
Dependent Claim
49 words
The system of claim 8 further including second logic means responsive to said stop signal; said logic means for producing forward and reverse signals being responsive to said second logic means so that the generation of said forward and reverse signals ceases upon the reception of said stop signal.
Claim 12
Dependent Claim
37 words
The system of claim 7 wherein said tape reader control systems are mutually responsive so that the enable signal from one of said control systems serves as the disable signal for all other of said control systems.
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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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |