US5396187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amplitude-and rise-time-insensitive timing-shaping filters
Assignee: Siemens Medical Solutions USA Inc
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Filing: 1992-08-13
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Granted: 1995-03-07
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Expires: 2012-08-13
Abstract
Abstract An amplitude- and rise-time-insensitive timing-shaping filter (10) for converting a selected input signal into a bi-polar output signal having a zero-crossing point which is independent of the rise-time and amplitude of substantially linear-edge input signals, and which is amplitude insensitive for input signals of arbitrary fixed shapes. The amplitude- and rise-time-insensitive timing-shaping filter (10) includes an attenuator (14) for generating an attenuated signal, a delay path (12) for generating a delay signal, and a differencer (16) for subtracting the attenuated signal from the delayed signal. The delay path (12) of the present invention includes a low-pass filter of a selected order and configuration, an all-pass filter with a selected order and configuration, or an all-pass-low-pass filter combination for generating a delayed signal.
Inventors
- 👤 David M. Binkley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:39
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/153; H03K5/13; H03K5/14
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
149 words
A timing-shaping filter for converting a selected input signal defining a substantially linear edge to a bi-polar signal having a zero-crossing time along said substantially linear edge, said timing-shaping filter being insensitive to the amplitude and rise time of said selected input signal, said timing-shaping filter comprising: signal delay circuitry for receiving said selected input signal and generating a delayed signal, said signal delay circuitry consisting of one or more low-pass filters; attenuation circuitry for receiving said selected input signal and generating an attenuated signal, said attenuated signal being a selected fraction of said selected input signal, said attenuator circuitry being connected in parallel to said signal delay circuitry; and a differencer for subtracting said attenuated signal from said delayed signal to generate said bi-polar signal whereby said bi-polar signal defines a zero-crossing time which is independent of said amplitude and said rise time of said selected input signal.
Claim 2
Dependent Claim
149 words
A timing-shaping filter for converting a selected input signal defining a substantially linear edge to a bi-polar signal having a zero-crossing time along said substantially linear edge, said timing-shaping filter being insensitive to the amplitude and rise time of said selected input signal, said timing-shaping filter comprising: signal delay circuitry for receiving said selected input signal and generating a delayed signal, said signal delay circuitry consisting of one or more low-pass filters; attenuation circuitry for receiving said selected input signal and generating an attenuated signal, said attenuated signal being a selected fraction of said selected input signal, said attenuator circuitry being connected in parallel to said signal delay circuitry; and a differencer for subtracting said attenuated signal from said delayed signal to generate said bi-polar signal whereby said bi-polar signal defines a zero-crossing time which is independent of said amplitude and said rise time of said selected input signal.
Claim 3
Dependent Claim
163 words
A timing-shaping filter for converting a selected input signal defining a substantially linear edge to a bi-polar signal having a zero-crossing time along said substantially linear edge, said timing-shaping filter being insensitive to the amplitude and rise time of said selected input signal, said timing-shaping filter comprising: signal delay circuitry for receiving said selected input signal and generating a delayed signal, said signal delay circuitry consisting of one or more low-pass filters; attenuation circuitry for receiving said selected input signal and generating an attenuated signal, said attenuated signal being a selected fraction of said selected input signal, said attenuator circuitry being connected in parallel to said signal delay circuitry, said selected fraction being within the range defined between zero, non-inclusive, and one, non-inclusive; and a differencer for subtracting said attenuated signal from said delayed signal to generate said bi-polar signal whereby said bi-polar signal defines a zero-crossing time which is independent of said amplitude and said rise time of said selected input signal.
Claim 4
Dependent Claim
163 words
A timing-shaping filter for converting a selected input signal defining a substantially linear edge to a bi-polar signal having a zero-crossing time along said substantially linear edge, said timing-shaping filter being insensitive to the amplitude and rise time of said selected input signal, said timing-shaping filter comprising: signal delay circuitry for receiving said selected input signal and generating a delayed signal, said signal delay circuitry consisting of one or more low-pass filters; attenuation circuitry for receiving said selected input signal and generating an attenuated signal, said attenuated signal being a selected fraction of said selected input signal, said attenuator circuitry being connected in parallel to said signal delay circuitry, said selected fraction being within the range defined between zero, non-inclusive, and one, non-inclusive; and a differencer for subtracting said attenuated signal from said delayed signal to generate said bi-polar signal whereby said bi-polar signal defines a zero-crossing time which is independent of said amplitude and said rise time of said selected input signal.
Claim 5
Dependent Claim
141 words
A timing-shaping filter for converting a selected input signal defining an arbitrary fixed shape to a bi-polar signal having a zero-crossing time, said timing-shaping filter being insensitive to at least the amplitude of said selected input signal, said timing-shaping filter comprising: signal delay circuitry for receiving said selected input signal and generating a delayed signal, said signal delay circuitry consisting of one or more low-pass filters; attenuation circuitry for receiving said selected input signal and generating an attenuated signal, said attenuated signal being a selected fraction of said selected input signal, said attenuator circuitry being connected in parallel to said signal delay circuitry; and a differencer for subtracting said attenuated signal from said delayed signal to generate said bi-polar signal whereby said bi-polar signal defines a zero-crossing time which is independent of at least said amplitude of said selected input signal.
Claim 6
Dependent Claim
141 words
A timing-shaping filter for converting a selected input signal defining an arbitrary fixed shape to a bi-polar signal having a zero-crossing time, said timing-shaping filter being insensitive to at least the amplitude of said selected input signal, said timing-shaping filter comprising: signal delay circuitry for receiving said selected input signal and generating a delayed signal, said signal delay circuitry consisting of one or more low-pass filters; attenuation circuitry for receiving said selected input signal and generating an attenuated signal, said attenuated signal being a selected fraction of said selected input signal, said attenuator circuitry being connected in parallel to said signal delay circuitry; and a differencer for subtracting said attenuated signal from said delayed signal to generate said bi-polar signal whereby said bi-polar signal defines a zero-crossing time which is independent of at least said amplitude of said selected input signal.
Claim 7
Dependent Claim
21 words
The timing-shaping filter of claim 3 wherein said selected fraction is within the range defined between zero, non-inclusive, and one, non-inclusive.
Claim 8
Dependent Claim
163 words
A timing-shaping filter for converting a selected input signal defining a substantially linear edge to a bi-polar signal having a zero-crossing time along said substantially linear edge, said timing-shaping filter being insensitive to the amplitude and rise time of said selected input signal, said timing-shaping filter comprising: signal delay circuitry for receiving said selected input signal and generating a delayed signal, said signal delay circuitry including at least one low-pass filter and at least one all-pass filter in series with said at least one low-pass filter; attenuation circuitry for receiving said selected input signal and generating an attenuated signal, said attenuated signal being a selected fraction of said selected input signal, said attenuator circuitry being connected in parallel to said signal delay circuitry; and a differencer for subtracting said attenuated signal from said delayed signal to generate said bi-polar signal whereby said bi-polar signal defines a zero-crossing time which is independent of said amplitude and said rise time of said selected input signal.
Claim 9
Dependent Claim
163 words
A timing-shaping filter for converting a selected input signal defining a substantially linear edge to a bi-polar signal having a zero-crossing time along said substantially linear edge, said timing-shaping filter being insensitive to the amplitude and rise time of said selected input signal, said timing-shaping filter comprising: signal delay circuitry for receiving said selected input signal and generating a delayed signal, said signal delay circuitry including at least one low-pass filter and at least one all-pass filter in series with said at least one low-pass filter; attenuation circuitry for receiving said selected input signal and generating an attenuated signal, said attenuated signal being a selected fraction of said selected input signal, said attenuator circuitry being connected in parallel to said signal delay circuitry; and a differencer for subtracting said attenuated signal from said delayed signal to generate said bi-polar signal whereby said bi-polar signal defines a zero-crossing time which is independent of said amplitude and said rise time of said selected input signal.
Claim 10
Dependent Claim
21 words
The timing-shaping filter of claim 5 wherein said selected fraction is within the range defined between zero, non-inclusive, and one, non-inclusive.
Claim 11
Dependent Claim
176 words
A timing-shaping filter for converting a selected input signal defining a substantially linear edge to a bi-polar signal having a zero-crossing time along said substantially linear edge, said timing-shaping filter being insensitive to the amplitude and rise time of said selected input signal, said timing-shaping filter comprising: signal delay circuitry for receiving said selected input signal and generating a delayed signal, said signal delay circuitry including at least one low-pass filter and at least one all-pass filter in series with said at least one low-pass filter; attenuation circuitry for receiving said selected input signal and generating an attenuated signal, said attenuated signal being a selected fraction of said selected input signal, said attenuator circuitry being connected in parallel to said signal delay circuitry, said selected fraction being within the range between zero, non-inclusive, and one, non-inclusive; and a differencer for subtracting said attenuated signal from said delayed signal to generate said bi-polar signal whereby said bi-polar signal defines a zero-crossing time which is independent of said amplitude and said rise time of said selected input signal.
Claim 12
Dependent Claim
176 words
A timing-shaping filter for converting a selected input signal defining a substantially linear edge to a bi-polar signal having a zero-crossing time along said substantially linear edge, said timing-shaping filter being insensitive to the amplitude and rise time of said selected input signal, said timing-shaping filter comprising: signal delay circuitry for receiving said selected input signal and generating a delayed signal, said signal delay circuitry including at least one low-pass filter and at least one all-pass filter in series with said at least one low-pass filter; attenuation circuitry for receiving said selected input signal and generating an attenuated signal, said attenuated signal being a selected fraction of said selected input signal, said attenuator circuitry being connected in parallel to said signal delay circuitry, said selected fraction being within the range between zero, non-inclusive, and one, non-inclusive; and a differencer for subtracting said attenuated signal from said delayed signal to generate said bi-polar signal whereby said bi-polar signal defines a zero-crossing time which is independent of said amplitude and said rise time of said selected input signal.
Claim 13
Dependent Claim
155 words
A timing-shaping filter for converting a selected input signal defining an arbitrary fixed shape to a bi-polar signal having a zero-crossing time, said timing-shaping filter being insensitive to at least the amplitude of said selected input signal, said timing-shaping filter comprising: signal delay circuitry for receiving said selected input signal and generating a delayed signal, said signal delay circuitry including at least one low-pass filter and at least one all-pass filter in series with said at least one low-pass filter; attenuation circuitry for receiving said selected input signal and generating an attenuated signal, said attenuated signal being a selected fraction of said selected input signal, said attenuator circuitry being connected in parallel to said signal delay circuitry; and a differencer for subtracting said attenuated signal from said delayed signal to generate said bi-polar signal whereby said bi-polar signal defines a zero-crossing time which is independent of at least said amplitude of said selected input signal.
Claim 14
Dependent Claim
155 words
A timing-shaping filter for converting a selected input signal defining an arbitrary fixed shape to a bi-polar signal having a zero-crossing time, said timing-shaping filter being insensitive to at least the amplitude of said selected input signal, said timing-shaping filter comprising: signal delay circuitry for receiving said selected input signal and generating a delayed signal, said signal delay circuitry including at least one low-pass filter and at least one all-pass filter in series with said at least one low-pass filter; attenuation circuitry for receiving said selected input signal and generating an attenuated signal, said attenuated signal being a selected fraction of said selected input signal, said attenuator circuitry being connected in parallel to said signal delay circuitry; and a differencer for subtracting said attenuated signal from said delayed signal to generate said bi-polar signal whereby said bi-polar signal defines a zero-crossing time which is independent of at least said amplitude of said selected input signal.
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) | 1998-03-06 | 1998-09-05 | 1999-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-06 | 2002-09-05 | 2003-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-06 | 2006-09-05 | 2007-03-07 | $7700.00 | Window Closed / Lapsed |