US5223799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parabolic signal generator
Assignee: Panasonic Holdings Corp
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Filing: 1992-07-07
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Granted: 1993-06-29
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Expires: 2012-07-07
Abstract
Abstract In a parabolic signal generator, a sync pulse is applied to a saw-tooth wave generation circuit, the output of the saw-tooth wave generation circuit is entered to an absolute value circuit, the output of the absolute value circuit is entered to a logarithmic amplifier, the output of the logarithmic amplifier is entered to a linear amplifier, and the output of the linear amplifier is entered to an antilogarithmic amplifier. The absolute value circuit, logarithmic amplifier, linear amplifier and antilogarithmic amplifier are powered by a single-voltage power source, and these circuit and appliers have reference input terminals supplied with a common bias voltage.
Inventors
- 👤 Kazunori Yamate
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:28
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/04; H04; H04N; H04N3/00; H04N3/10; H04N3/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
70 words
A parabolic signal generator in which a sync pulse is applied to a saw-tooth wave generation circuit, the output of said saw-tooth wave generation circuit is entered to an absolute value circuit, the output of said absolute value circuit is entered to a logarithmic amplifier, the output of said logarithmic amplifier is entered to a linear amplifier, and the output of said linear amplifier is entered to an antilogarithmic amplifier.
Claim 2
Dependent Claim
70 words
A parabolic signal generator in which a sync pulse is applied to a saw-tooth wave generation circuit, the output of said saw-tooth wave generation circuit is entered to an absolute value circuit, the output of said absolute value circuit is entered to a logarithmic amplifier, the output of said logarithmic amplifier is entered to a linear amplifier, and the output of said linear amplifier is entered to an antilogarithmic amplifier.
Claim 3
Dependent Claim
49 words
A parabolic signal generator according to claim 1, wherein said absolute value circuit, logarithmic amplifier, linear amplifier and antilogarithmic amplifier are powered by a single-voltage power source, and said absolute value circuit, logarithmic amplifier, linear amplifier and antilogarithmic amplifier have reference input terminals supplied with a common bias voltage.
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) | 1996-06-28 | 1996-12-28 | 1997-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-28 | 2000-12-28 | 2001-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-28 | 2004-12-28 | 2005-06-29 | $7700.00 | Window Closed / Lapsed |