US PATENT SUBCLASS 341 / 155
.~ Analog to digital conversion

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


341 /   HD   CODED DATA GENERATION OR CONVERSION

126  DF  ANALOG TO OR FROM DIGITAL CONVERSION {12}
155.~ Analog to digital conversion {6}
156  DF  .~.~> Coarse and fine conversions
157  DF  .~.~> Intermediate conversion to frequency or number of pulses
158  DF  .~.~> Analog input compared with static reference {6}
166  DF  .~.~> Intermediate conversion to time interval {4}
171  DF  .~.~> Using magnetic or cryogenic components
172  DF  .~.~> Using charge transfer devices (e.g., charge coupled devices, charge transfer by switched capacitances)

DEFINITION

Classification: 341/155

Analog to digital conversion:

(under subclass 126) Subject matter wherein analog information represented by a parameter of an electrical signal, which signal can have an infinite number of values within a given range, is converted to a coded digital signal representing the same information.

(1) Note. Examples of a parameter of a signal are amplitude or frequency.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1+, for pattern reading type analog to digital conversion.

111+, for conversion of the phase or time of phase change of a signal to a coded digital signal.

118+, for compensation of an analog to digital converter.

120+, for testing or calibrating an analog to digital converter. 122+, for analog to digital converters where an input analog signal is sampled and held.

143, for analog to or from differential code conversion.

SEE OR SEARCH CLASS

340, Communications: Electrical,

870.21, for analog to digital function conversion in telemetry.

375, Pulse or Digital Communications,

242+, for pulse code modulation communication systems.

704, Data Processing: Speech Signal Processing, Linguistics, Language Translation, and Audio Compression/Decompression,

200+, 500+, and 503+ for audio and speech-to-digital conversion.