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...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!

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Class 348/909 - NOISE RESPONSIVE SIGNAL PROCESSING


Subclass of Class 348 - Television
Definition: Art collection of television circuits that include a noise
No. of patents: 7
Last issue date: 04/22/2008


NumberTitleIssue Date
7362384Apparatus and method for feed-forward image rejection in a dual conversion receiver
A receiver portion includes a bandpass filter (e.g. SAW filter) that performs channel selection from an input signal having a plurality of channels, and an image cancellation circuit that is in parallel with the bandpass filter. The bandpass filter performs channel ...
04/22/2008
6999634Spatio-temporal joint filter for noise reduction
A spatio-temporal joint filter and a spatial joint filter for noise reduction are disclosed. The spatio-temporal joint filter includes a spatial joint filter including the first and second sub filters having different characteristics and includes a temporal joint fi...
02/14/2006
6201582Circuit for moire suppression
A circuit for moire suppression detects the Nyquist frequency in an input video signal. Based on detected alternating structures indicative of the Nyquist frequency, the circuit fades between outputting the input video signal and a low-pass filtered versi...
03/13/2001
5897608Compensating apparatus and method for signal processing circuit
A compensating method and apparatus is provided which collectively compensates for variations in a variety of characteristics in respective circuit portions of a signal processing circuit. A correction data generator is provided for generating correction ...
04/27/1999
5654765Channel equalizer for digital television receiver having an initial coefficient storage unit
A channel equalizer for a digital television receiver which filters an input signal to remove a noise component mixed therewith during transmission. The channel equalizer comprises an initial coefficient storage unit for outputting a predetermined coeffic...
08/05/1997
5432557Extended television signal receiver
In a receiver for extended television signals in which a wide aspect ratio picture and at least one horizontal bar are jointly coded so as to form a standard aspect ratio picture, the at least one horizontal bar conveys vertical resolution enhancement inf...
07/11/1995
5210798Vector neural network for low signal-to-noise ratio detection of a target
A vector neural network (VNN) of interconnected neurons is provided in transition mappings of potential targets wherein the threshold (energy) of a single frame does not provide adequate information (energy) to declare a target position. The VNN enhances ...
05/11/1993
 
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