Pattern generation system

Details Pattern generation system Pattern generation system

1978-08-04

1980-05-20

Smith, Jerry

Excavating

364200, G06F 104, G06F 1100

Patent

active

042035430

ABSTRACT:
This discloses a pattern generator having a programmable product cycle timer in which a pulse train, i.e., the pattern generated can be repeated or switched from a first pulse frequency to a second pulse frequency without the usual transient switching periods between pulses. The invention accomplishes this by providing the generator with a cycle timer using a clock operating in conjunction with a down counter so that at a pre-selected time interval, before the end of the pulse is achieved, a test is made to determine if a required condition needing a different pulse frequency exists. If such a condition does not exist the present pulse frequency is reinitiated so that at count 0 it is repeated without delay. If the required condition does exist loading of the needed pulse frequency is initiated so that upon termination of the presently existing pulse at count 0, the newly selected pulse will be introduced into the product being tested without delay.

REFERENCES:
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patent: 3713097 (1973-01-01), Linnerooth et al.
patent: 3719885 (1973-03-01), Carpenter et al.
patent: 3737637 (1973-06-01), Frankeny et al.
patent: 3764992 (1973-10-01), Milne
patent: 3789195 (1974-01-01), Meier et al.
patent: 3805152 (1974-04-01), Ebersman et al.
patent: 3824378 (1974-07-01), Johnson et al.
patent: 3930144 (1975-12-01), Tanaka
patent: 3956616 (1976-05-01), Knollenberg
patent: 4041387 (1977-08-01), Dalichow et al.
E. Legnard et al., "Pattern Generating System", IBM Technical Disclosure Bulletin, vol. 14, No. 2, Jul. 1971, pp. 482-484.

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