Patent US4350366A successfully refreshed from Google Patents.
Patent DE77014C successfully refreshed from Google Patents.
Patent US528343A successfully refreshed from Google Patents.
EP0343899A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Circuit for generating pulses having controlled duty cycle
Assignee: Advanced Micro Devices Inc
•
Filing: 1989-05-22
•
Granted: —
•
Expires: 2009-05-22
Abstract
Abstract A circuit for generating a train of pulses having a predetermined controlled duty cycle in response to a train of input pulses, comprising: means responsibe to said input pulses for generating a ramp signal having a ramp portion formed as a function of the repetition of said input pulses, means coupled to said ramp signal generating means for threshold detecting said ramp portion of said ramp signal at a predetermined threshold level, means coupled from the output of said threshold level detecting means to the input of said threshold detecting means for integrating and feeding back the output of said threshold detecting means to the input of said threshold detecting means, and reference voltage source means coupled to said integrating and feeding back means and said threshold detecting means for providing a reference voltage for determining a threshold detection level of said threshold detecting means.
Inventors
- 👤 Tatsuo Itoh
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 01:21
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/156; H03K5/1565
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
144 words
A circuit for generating a train of pulses having a predetermined controlled duty cycle in response to a train of input pulses, comprising: means responsive to said input pulses for generating a ramp signal having a ramp portion formed as a function of the repetition of said input pulses, means coupled to said ramp signal generating means for threshold detecting said ramp portion of said ramp signal at a predetermined threshold level, means coupled from the output of said threshold detecting means to the input of said threshold detecting means for integrating and feeding back the output of said threshold detecting means to the input of said threshold detecting means, and reference voltage source means coupled to said integrating and feeding back means and said threshold detecting means for providing a reference voltage for determining a threshold detection level of said threshold detecting means.
Claim 2
Dependent Claim
144 words
A circuit for generating a train of pulses having a predetermined controlled duty cycle in response to a train of input pulses, comprising: means responsive to said input pulses for generating a ramp signal having a ramp portion formed as a function of the repetition of said input pulses, means coupled to said ramp signal generating means for threshold detecting said ramp portion of said ramp signal at a predetermined threshold level, means coupled from the output of said threshold detecting means to the input of said threshold detecting means for integrating and feeding back the output of said threshold detecting means to the input of said threshold detecting means, and reference voltage source means coupled to said integrating and feeding back means and said threshold detecting means for providing a reference voltage for determining a threshold detection level of said threshold detecting means.
Claim 3
Dependent Claim
46 words
A pulse generating circuit in accordance with Claim 1, wherein said ramp signal generating means comprises means responsive to the input pulses for integrating said input pulses for providing a ramp signal having a ramp portion formed as a result of integration of said input pulses.
Claim 4
Dependent Claim
46 words
A pulse generating circuit in accordance with Claim 1, wherein said ramp signal generating means comprises means responsive to the input pulses for differentiating said input pulses for providing a ramp signal having a ramp portion formed as a result of differentiation of said input pulses.
Claim 5
Dependent Claim
38 words
A circuit for generating a train of pulses in accordance with Claim 1, which further comprises summing means for summing the output from said ramp signal generating means and the output from said integrating and feeding back means.
Claim 6
Dependent Claim
41 words
A circuit for generating pulses in accordance with Claim 1, wherein said integrating and feeding back means comprises amplifying means for amplifying the output from said threshold detecting means, and integrating circuit means for integrating the output from said amplifying means.
Claim 7
Dependent Claim
37 words
A circuit for generating pulses in accordance with Claim 5, wherein said amplifying means comprises operational amplifying means adapted to receive the output from said threshold detecting means the the reference voltage from said reference voltage means.
Claim 8
Dependent Claim
52 words
A circuit for generating pulses in accordance with Claim 1, wherein said threshold detecting means comprises an amplifier including field effect devices having a predetermined threshold voltage, and said reference voltage source means comprises means for determining a threshold detection level based on said predetermined threshold voltage of said field effect devices.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.