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Class Information
Number: 341/108
Name: Coded data generation or conversion > Reversible analog to digital converters
Description: Subject matter where the converter is capable of operating either as an analog to digital converter or as a digital to analog converter.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8515503 Hearing device Aug. 20, 2013
8451150 Transceiver and method for converting signals of the transceiver thereof May. 28, 2013
8442171 Digital correction of analog polyphase filters May. 14, 2013
8193724 Power supply apparatus Jun. 5, 2012
8050365 Radio communication device Nov. 1, 2011
7791513 Adaptive combinatorial coding/decoding with specified occurrences for electrical computers and digital data processing systems Sep. 7, 2010
7518538 Adaptive entropy coding compression with multi-level context escapes Apr. 14, 2009
7498964 Analog interface for digital instrumentation Mar. 3, 2009
7489263 Discrete-time programmable-gain analog-to-digital converter (ADC) input circuit with multi-phase reference application Feb. 10, 2009
7477173 Combined AD/DA converting apparatus Jan. 13, 2009
7188196 Method and apparatus for playing analog audio to multiple codec outputs Mar. 6, 2007
7138932 Signal converting apparatus for integrating analog-to-digital converter and digital-to-analog converter and integration unit Nov. 21, 2006
7088272 Pipeline arithmetic code decoding method and apparatus using context index predictor Aug. 8, 2006
6909935 Methods with resolution enhancement feature for improving accuracy of conversion of required chemical mechanical polishing pressure to force to be applied by polishing head to wafer Jun. 21, 2005
6725120 Apparatus and methods with resolution enhancement feature for improving accuracy of conversion of required chemical mechanical polishing pressure to force to be applied by polishing head to wa Apr. 20, 2004
6583745 A/D converter Jun. 24, 2003
6577987 Operational monitoring for a converter Jun. 10, 2003
6498577 Piecewise-linear, non-uniform ADC Dec. 24, 2002
6448914 Integrated circuit for conditioning and conversion of bi-directional discrete and analog signals Sep. 10, 2002
6407691 Providing power, clock, and control signals as a single combined signal across an isolation barrier in an ADC Jun. 18, 2002
6373412 Fast JPEG huffman encoding and decoding Apr. 16, 2002
6347123 Low-current sample rate converter Feb. 12, 2002
6260085 Changeover device which uses both analog and digital signals as input signals and supplies an analog output signal Jul. 10, 2001
6211802 Semiconductor integrated circuit for performing data transfer Apr. 3, 2001
5995033 Signal conditioning circuit including a combined ADC/DAC, sensor system, and method therefor Nov. 30, 1999
5929796 Self-calibrating reversible pipeline analog to digital and digital to analog converter Jul. 27, 1999
5896100 Method and apparatus for analog-to-digital or digital-to-analog conversion Apr. 20, 1999
5594438 Analog-to-digital converter Jan. 14, 1997
5493300 Circuit configuration for a D/A and A/D converter Feb. 20, 1996
5432513 Codec Jul. 11, 1995
5404141 Signal converting apparatus utilizing an analog-digital converting section and a digital-analog converting section Apr. 4, 1995
5389925 A/D and D/A conversion device with shared parameter generators Feb. 14, 1995
5373292 Integration type D-A/A-D Conversion apparatus capable of shortening conversion processing time Dec. 13, 1994
5345234 Method and apparatus for combining a flash analog to digital converter with digital to analog functions Sep. 6, 1994
5317529 Digital filter using intermediate holding registers and common accumulators and multipliers May. 31, 1994
5252972 Codec having controllable frame synchronizing and clocking signals Oct. 12, 1993
5003309 Apparatus having shared architecture for analog-to-digital and for digital-to-analog signal conversion Mar. 26, 1991
5001480 Analog-to-digital and digital-to-analog conversion system and echo cancellation device including the same Mar. 19, 1991
4908620 Analog-to-digital and digital-to-analog converter Mar. 13, 1990
4622536 Ratio independent cyclic A/D and D/A conversion using a reciprocating reference approach Nov. 11, 1986
4609906 Digital-to-analog/analog-to-digital dual mode circuit Sep. 2, 1986
4454500 Analog data acquisition device Jun. 12, 1984
4445111 Bi-polar electronic signal converters with single polarity accurate reference source Apr. 24, 1984
4404544 .mu.-Law/A-law PCM CODEC Sep. 13, 1983
4385286 Use of single reference voltage for analog to digital or digital to analog conversion of bipolar signals May. 24, 1983
4384278 One-bit codec with slope overload correction May. 17, 1983
4380756 Charge redistribution circuit having reduced area Apr. 19, 1983
4367456 PCM and PAM Conversion circuit including signal level variation on the PCM portion of the circuit Jan. 4, 1983
4350975 Dual bandwidth autozero loop for a voice frequency CODEC Sep. 21, 1982
4348768 PCM Codec using common D/A converter for encoding and decoding Sep. 7, 1982

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