← Back to Patent Explorer
US3795867A Expired / Lapsed US ⏱️ 0.0 years remaining

Pulse detection arrangement

Assignee: AG Communication Systems Corp
•
Filing: 1973-04-02
•
Granted: 1974-03-05
•
Expires: 1993-04-02
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A pulse detection arrangement indicates the malfunctioning of a pair of timing generators producing a series of first and second synchronously recurring timing pulses by generating a stuck-atone pulse when either one of the first or second pulses is generated and remains in a true condition as a result of a malfunction, and by generating a stuck-at-zero signal when either one of the timing pulses fails to be generated. The arrangement includes a zero bi-stable device responsive to the absence of both of the first and second pulses to generate a zero state pulse, a first bi-stable device responsive to either one of the first or second pulses and to the zero state pulse for generating a state one pulse, the state one pulse causing the zero bi-stable device to terminate its zero state pulse, a second bi-stable device responsive to the coincidence of the first pulse and the second pulse and to the state one pulse for generating a state two pulse, the state two pulse causing the first bi-stable device to terminate its state one pulse upon the lack of coincidence of the first and second pulses, the second bi-stable device terminating its state two pulse upon the occurrence of the state zero pulse or upon the coincidence of the first and second pulses and of the termination of the state one pulse, and a logic circuit for generating the stuck-at-one pulse in response to the absence of the state zero pulse and to the absence of the state one pulse and of the state two pulse after a predetermined time interval, the logic circuit generating the stuck-at-zero pulse in response to the state one pulse after a predetermined timing interval.

Inventors

  • 👤 L Jones

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 17:40
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/22; H03K5/26

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 227 words
A detection arrangement for determining the malfunctioning of a pair of timing generators producing a series of synchronously recurring first and second pulses, said arrangement comprising: zero bi-stable means responsive to the absence of both of said first or second pulses to generate a zero state pulse; first bi-stable means responsive to either one of said first or second pulses and to said zero state pulse for generating a state one pulse, said state one pulse causing said zero bistable device to terminate its zero state pulse; second bi-stable means responsive to the coincidence of said state one pulse and of said first pulse and said second pulse for generating a state two pulse, said state two pulse causing said first bi-stable device to terminate its state one pulse upon the lack of coincidence of said first and second pulses, said second bi-stable device terminating its state two pulse upon the presence of said zero state pulse or upon the coincidence of said first and second pulses and of the termination of said state one pulse; and logic means for generating a stuck-at-one pulse in response to the absence of said state zero pulse, said state one pulse and said state two pulse after a predetermined time interval, said logic means generating a stuck-at-zero pulse in response to said state one pulse after said predetermined timing interval.
Claim 2
Dependent Claim 227 words
A detection arrangement for determining the malfunctioning of a pair of timing generators producing a series of synchronously recurring first and second pulses, said arrangement comprising: zero bi-stable means responsive to the absence of both of said first or second pulses to generate a zero state pulse; first bi-stable means responsive to either one of said first or second pulses and to said zero state pulse for generating a state one pulse, said state one pulse causing said zero bistable device to terminate its zero state pulse; second bi-stable means responsive to the coincidence of said state one pulse and of said first pulse and said second pulse for generating a state two pulse, said state two pulse causing said first bi-stable device to terminate its state one pulse upon the lack of coincidence of said first and second pulses, said second bi-stable device terminating its state two pulse upon the presence of said zero state pulse or upon the coincidence of said first and second pulses and of the termination of said state one pulse; and logic means for generating a stuck-at-one pulse in response to the absence of said state zero pulse, said state one pulse and said state two pulse after a predetermined time interval, said logic means generating a stuck-at-zero pulse in response to said state one pulse after said predetermined timing interval.
Claim 3
Dependent Claim 29 words
A detection arrangement according to claim 1, further including a stuck bi-stable device for generating a stuck signal in response to either said stuck-at-one pulse or said stuck-at-zero pulse.
Claim 4
Dependent Claim 22 words
A detection arrangement according to claim 2, means for causing said stuck bi-stable device to remain set after said predetermined timing interval.
Claim 5
Dependent Claim 37 words
A detection arrangement according to claim 1, further including zero coincidence gating means responsive to the absence of both of said first or second pulses to cause said zero bi-stable device to generate its zero state pulse.
Claim 6
Dependent Claim 41 words
A detection arrangement according to claim 4, further including first coincidence gating means responsive to either one of said first or second pulses and to said zero state pulse for causing said first bi-stable device to generate its state one pulse.
Claim 7
Dependent Claim 43 words
A detection arrangement according to claim 5, further including second coincidence gating means responsive to the coincidence of said first pulse and said second pulse and of said state one pulse for causing said second bi-stable device to generate its state two pulse.
Claim 8
Dependent Claim 55 words
A detection arrangement according to claim 1, wherein said first and second pulses form part of respective first and second series of sequential timing pulses recurring in synchronism, said first and second pulses being intermediate occurring pulses, said timing interval being determined by a subsequently occurring one of said first and second series of pulses.
Claim 9
Dependent Claim 29 words
A detection arrangement according to claim 7, further including a stuck bi-stable device for generating a stuck signal in response to either said stuck-at-one pulse or said stuck-at-zero pulse.
Claim 10
Dependent Claim 22 words
A detection arrangement according to claim 8, means for causing said stuck bi-stable device to remain set after said predetermined timing interval.

References Cited (Backward Citations)

US3069623A Cited
US3233180A Cited
US3441342A Cited
US3514705A Cited
US3515997A Cited
US3501701A Cited
US3588710A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-03-04 1977-09-03 1978-03-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-03-04 1981-09-03 1982-03-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-03-04 1985-09-03 1986-03-05 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag