Television – Nonpictorial data packet in television format – Data separation or detection
Reexamination Certificate
2005-03-14
2008-12-09
Kostak, Victor R (Department: 2622)
Television
Nonpictorial data packet in television format
Data separation or detection
C348S691000, C327S060000, C327S070000
Reexamination Certificate
active
07463309
ABSTRACT:
A data slicer of the present invention comprises a reference voltage generation circuit and a comparator. The reference voltage generation circuit comprises a plurality of capacitances which area connected in parallel to one another, holding electrical charges on the basis of an input signal, a plurality of first switches which are connected to the plurality of capacitances with first nodes, respectively, for controlling the inflow of the input signal to the plurality of capacitances and a plurality of second switches which are connected to the plurality of capacitances with the first nodes, respectively, for controlling the connection among the plurality of capacitances. The plurality of first switches are controlled with predetermined timing where these first switches are individually brought into an ON state, and the plurality of second switches are controlled with predetermined timing where all the second switches are brought into an ON state. With this construction, the present invention is intended to provide a data slicer which comprises a reference voltage generation circuit capable of generating an appropriate slicer reference voltage even if the input signal quickly changes.
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Matsuo Rie
Nomura Kazuo
Buchanan & Ingersoll & Rooney PC
Kostak Victor R
Renesas Technology Corp.
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