US4237477A
Expired / Lapsed
US
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Charge transfer imager
Assignee: RCA Corp
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Filing: 1979-10-22
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Granted: 1980-12-02
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Expires: 1999-10-22
Abstract
Abstract Single-chip, color imager in which filters for the three colors are arranged in successive stripes over the rows. The rows are read out a pair at a time. Each line of displayed information is obtained by combining the signals read from the last row of one pair of rows, delayed one horizontal line time, with the signals read from the following pair of rows.
Inventors
- 👤 Paul K. Weimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:41
CPC Classifications
H; H04; H04N; H04N25/00; H04N25/40; H04N25/44; H04N25/447; H04N25/10; H04N25/11
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
156 words
A charge-transfer (CT) color imager comprising, in combination: a CT imager array arranged in a plurality of rows; color filter stripes over the rows, each stripe over a row being of the same color over the entire length of a row, and the stripes over each group of three adjacent rows being in three different colors; means for reading out the rows of the imager, a pair of rows at a time; means for delaying for one line time, the signals read from the last row of each pair of rows read out; and means for selecting color signals to be combined comprising, means for producing, during each of successive intervals in each line time, signals read from successive locations along the pair of rows then being read out, and the signals delayed one line time read from corresponding locations of the preceding row of the pair of rows read out during the previous line time.
Claim 2
Dependent Claim
156 words
A charge-transfer (CT) color imager comprising, in combination: a CT imager array arranged in a plurality of rows; color filter stripes over the rows, each stripe over a row being of the same color over the entire length of a row, and the stripes over each group of three adjacent rows being in three different colors; means for reading out the rows of the imager, a pair of rows at a time; means for delaying for one line time, the signals read from the last row of each pair of rows read out; and means for selecting color signals to be combined comprising, means for producing, during each of successive intervals in each line time, signals read from successive locations along the pair of rows then being read out, and the signals delayed one line time read from corresponding locations of the preceding row of the pair of rows read out during the previous line time.
Claim 3
Dependent Claim
23 words
A CT imager as set forth in claim 1 wherein each group of three filter stripes comprises green, red and blue stripes, respectively.
Claim 4
Dependent Claim
126 words
A CT imager as set forth in claim 1 wherein the means for reading out a pair of rows at a time includes means for interleaving the signals read from the first row of each pair with those read from the second row of a pair, wherein the means for delaying comprises a delay line, and wherein the means for selecting comprises two conductors, first switch means for routing the interleaved signals in alternate fashion to (a) one of the conductors and (b) to the other of the conductors and the input to the delay line, and second switch means for routing the output signal of the delay line and the signals on the two conductors to three separate output terminals for the three different colors.
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) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |