US4220977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal transmission circuit
Assignee: Sony Corp
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Filing: 1978-10-24
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Granted: 1980-09-02
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Expires: 1998-10-24
Abstract
Abstract The present invention relates generally to a signal transmission circuit in which a plurality of sampling circuits are interposed, and is directed more particularly to such a signal transmission circuit suitable for use in the signal processing circuit of a solid state television camera in which a semiconductor device such as a CCD and a BBD (bucket brigade device) is employed.
Inventors
- 👤 Seisuke Yamanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:11
CPC Classifications
H; H04; H04N; H04N25/00; H04N25/40; H04N25/44; H04N25/447
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
83 words
A signal transmission circuit comprising: (a) a first sample-hold circuit for receiving an incoming signal and supplying sample-hold output signal; (b) a first sampling pulse supplied to said first sample-hold circuit; (c) a low pass filter circuit to be supplied with said sample-hold output signal from said first sample-hold circuit; (d) a second sampling circuit connected to said low pass filter for re-sampling an output from said low pass filter circuit; and (e) a second sampling pulse supplied to said second sampling circuit.
Claim 2
Dependent Claim
83 words
A signal transmission circuit comprising: (a) a first sample-hold circuit for receiving an incoming signal and supplying sample-hold output signal; (b) a first sampling pulse supplied to said first sample-hold circuit; (c) a low pass filter circuit to be supplied with said sample-hold output signal from said first sample-hold circuit; (d) a second sampling circuit connected to said low pass filter for re-sampling an output from said low pass filter circuit; and (e) a second sampling pulse supplied to said second sampling circuit.
Claim 3
Dependent Claim
18 words
A signal transmission circuit as claimed in claim 1, wherein said second sampling circuit includes a signal-hold circuit.
Claim 4
Dependent Claim
49 words
A signal transmission circuit as claimed in claim 1, wherein a frequency f 1 of said first sampling pulse is equal to a frequency f 2 of said second sampling pulse, and a cut-off frequency f cut of said low pass filter is selected to be about said frequency.
Claim 5
Dependent Claim
34 words
A signal transmission circuit as claimed in claim 3, wherein said second sampling circuit includes a signal-hold circuit, and the phase of the second sampling pulse is adjustable relative to said first sampling pulse.
Claim 6
Dependent Claim
28 words
A signal transmission circuit as claimed in claim 4, wherein said second sampling pulse is generated by passing said first sampling pulse through a variable phase shift circuit.
Claim 7
Dependent Claim
27 words
A signal transmission circuit as claimed in claim 4, wherein a holding time at said signal-hold circuit in the second sampling circuit is made to be adjustable.
Claim 8
Dependent Claim
30 words
A signal transmission circuit as claimed in claim 4, where said signal transmission circuit is applied to a solid stage image pick-up system having a plurality of image sensing chips.
Claim 9
Dependent Claim
40 words
A signal transmission circuit as claimed in claim 7, wherein said plurality of image sensing chips are displaced each other relative to a focused object image, and said signal transmission circuit is interposed in respective outputs of said sensor chips.
Claim 10
Dependent Claim
33 words
A signal transmission circuit as claimed in claim 8, wherein said respective outputs after said signal transmission circuit are mixed for cancelling side band components for improving the resolution of a reproduced image.
Claim 11
Dependent Claim
21 words
A signal transmission circuit as claimed in claim 1, wherein said second sampling circuit is comprised of a sampling gate circuit.
Claim 12
Dependent Claim
35 words
A signal transmission circuit as claimed in claim 1, wherein said second sampling circuit is comprised of a balanced modulator and said second sampling pulse is supplied to the balanced modulator as a carrier signal.
Claim 13
Dependent Claim
26 words
A signal transmission circuit as claimed in claim 1, where said signal transmission circuit is applied to a signal derived from a sampling-type signal transmitting device.
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) | 1983-09-02 | 1984-03-03 | 1984-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-02 | 1988-03-03 | 1988-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-02 | 1992-03-03 | 1992-09-02 | $7700.00 | Window Closed / Lapsed |