US Patent No: 5,539,404
Number of patents in Portfolio can not be more than 2000
Digital to analog converter using recursive signal dividing charge coupled devices
Stats
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Jul 23, 1996
Issued date -
Feb 7, 1994
filing date -
08/192,961
serial no -
Expired
status
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Abstract
Analog memories such as CCD, which are advantageous in less power consumption and higher integration density, are used to configure a system for highly accurately executing digital/analog processing. A digital to analog converter according to the invention has at least one first analog memory having an input port for receiving input signal packets and a partial output drive port for driving the i-th output signal packet; at least one second analog memory having a function to integrate input signal packets applied thereto; and at least one signal packet routing mechanism for selectively routing output signal packets from the first analog memory according to an input digital signal bit. The extremely simple configuration of the present invention may be effectively utilized for realizing an ultra-parallel analog processor as well as applied to other fields such as video processing by combining a function of an input means for optical signals, which has been a main application of the CCD.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 4,213,120 CCD Digital-to-analog converter | 9 | 1978 | |
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| 5,386,115 Solid state micro-machined mass spectrograph universal gas detection sensor | 43 | 1993 | |
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| 4,369,378 Quantizing circuits using a charge coupled device with a feedback channel | 8 | 1980 | |
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| 4,616,334 Pipelined programmable charge domain device | 5 | 1984 | |