Skip header and go to main content

Classification Resources
 
Class   704DATA PROCESSING: SPEECH SIGNAL PROCESSING, LINGUISTICS, LANGUAGE TRANSLATION, AND AUDIO COMPRESSION/DECOMPRESSION
Click here for a printable version of this file
  Turn Outline  
     Expand/Contract Processing Please Wait
[List of Pre Grant Publications for class 704 subclass 1][List of Patents for class 704 subclass 1]1 LINGUISTICS
[List of Pre Grant Publications for class 704 subclass 200][List of Patents for class 704 subclass 200]200 SPEECH SIGNAL PROCESSING
 [List of Pre Grant Publications for class 704 subclass 200.1][List of Patents for class 704 subclass 200.1]200.1 Subclass 200.1 indent level is 1 Psychoacoustic
[List of Pre Grant Publications for class 704 subclass 201][List of Patents for class 704 subclass 201]201 Subclass 201 indent level is 1 For storage or transmission
[List of Pre Grant Publications for class 704 subclass 231][List of Patents for class 704 subclass 231]231 Subclass 231 indent level is 1 Recognition
[List of Pre Grant Publications for class 704 subclass 258][List of Patents for class 704 subclass 258]258 Subclass 258 indent level is 1 Synthesis
[List of Pre Grant Publications for class 704 subclass 270][List of Patents for class 704 subclass 270]270 Subclass 270 indent level is 1 Application
[List of Pre Grant Publications for class 704 subclass 500][List of Patents for class 704 subclass 500]500 AUDIO SIGNAL BANDWIDTH COMPRESSION OR EXPANSION
[List of Pre Grant Publications for class 704 subclass 503][List of Patents for class 704 subclass 503]503 AUDIO SIGNAL TIME COMPRESSION OR EXPANSION (E.G., RUN LENGTH CODING)
 
E-SUBCLASSES
 
The following subclasses beginning with the letter E are E-subclasses. Each E-subclass corresponds in scope to a classification in a foreign classification system, for example, the European Classification system (ECLA). The foreign classification equivalent to an E-subclass is identified in the subclass definition. In addition to US documents classified in E-subclasses by US examiners, documents are regularly classified in E-subclasses according to the classification practices of any foreign Offices identified in parentheses at the end of the title. For example, "(EPO)" at the end of a title indicates both European and US patent documents, as classified by the EPO, are regularly added to the subclass. E-subclasses may contain subject matter outside the scope of this class.Consult their definitions, or the documents themselves to clarify or interpret titles.
[List of Pre Grant Publications for class 704 subclass E17.001][List of Patents for class 704 subclass E17.001]E17.001 SPEAKER IDENTIFICATION OR VERIFICATION (EPO)
[List of Pre Grant Publications for class 704 subclass E15.001][List of Patents for class 704 subclass E15.001]E15.001 SPEECH RECOGNITION (EPO)
 [List of Pre Grant Publications for class 704 subclass E15.002][List of Patents for class 704 subclass E15.002]E15.002 Subclass E15.002 indent level is 1 Assessment or evaluation of speech recognition systems (EPO)
 [List of Pre Grant Publications for class 704 subclass E15.003][List of Patents for class 704 subclass E15.003]E15.003 Subclass E15.003 indent level is 1 Language recognition (EPO)
 [List of Pre Grant Publications for class 704 subclass E15.004][List of Patents for class 704 subclass E15.004]E15.004 Subclass E15.004 indent level is 1 Feature extraction for speech recognition; selection of recognition unit (EPO)
[List of Pre Grant Publications for class 704 subclass E15.005][List of Patents for class 704 subclass E15.005]E15.005 Subclass E15.005 indent level is 1 Segmentation or word limit detection (EPO)
[List of Pre Grant Publications for class 704 subclass E15.007][List of Patents for class 704 subclass E15.007]E15.007 Subclass E15.007 indent level is 1 Creation of reference templates; training of speech recognition systems, e.g., adaption to the characteristics of the speaker's voice, etc. (EPO)
[List of Pre Grant Publications for class 704 subclass E15.014][List of Patents for class 704 subclass E15.014]E15.014 Subclass E15.014 indent level is 1 Speech classification or search (EPO)
 [List of Pre Grant Publications for class 704 subclass E15.015][List of Patents for class 704 subclass E15.015]E15.015 Subclass E15.015 indent level is 2 Using distance or distortion measures between unknown speech and reference templates (EPO)
 [List of Pre Grant Publications for class 704 subclass E15.016][List of Patents for class 704 subclass E15.016]E15.016 Subclass E15.016 indent level is 2 Using dynamic programming techniques, e.g., Dynamic Time Warping (DTW), etc. (EPO)
 [List of Pre Grant Publications for class 704 subclass E15.017][List of Patents for class 704 subclass E15.017]E15.017 Subclass E15.017 indent level is 2 Using artificial neural networks (EPO)
[List of Pre Grant Publications for class 704 subclass E15.018][List of Patents for class 704 subclass E15.018]E15.018 Subclass E15.018 indent level is 2 Using natural language modeling (EPO)
[List of Pre Grant Publications for class 704 subclass E15.027][List of Patents for class 704 subclass E15.027]E15.027 Subclass E15.027 indent level is 2 Using statistical models, e.g., Hidden Markov Models (HMMs), etc. (EPO)
 [List of Pre Grant Publications for class 704 subclass E15.038][List of Patents for class 704 subclass E15.038]E15.038 Subclass E15.038 indent level is 2 Recognition networks (EPO)
 [List of Pre Grant Publications for class 704 subclass E15.039][List of Patents for class 704 subclass E15.039]E15.039 Subclass E15.039 indent level is 1 Speech recognition techniques for robustness in adverse environments, e.g., in noise, of stress induced speech, etc. (EPO)
 [List of Pre Grant Publications for class 704 subclass E15.04][List of Patents for class 704 subclass E15.04]E15.04 Subclass E15.04 indent level is 1 Procedures used during a speech recognition process, e.g., man-machine dialogue, etc. (EPO)
[List of Pre Grant Publications for class 704 subclass E15.041][List of Patents for class 704 subclass E15.041]E15.041 Subclass E15.041 indent level is 1 Speech recognition using nonacoustical features, e.g., position of the lips, etc. (EPO)
[List of Pre Grant Publications for class 704 subclass E15.043][List of Patents for class 704 subclass E15.043]E15.043 Subclass E15.043 indent level is 1 Speech to text systems (EPO)
[List of Pre Grant Publications for class 704 subclass E15.046][List of Patents for class 704 subclass E15.046]E15.046 Subclass E15.046 indent level is 1 Constructional details of speech recognition systems (EPO)
[List of Pre Grant Publications for class 704 subclass E19.001][List of Patents for class 704 subclass E19.001]E19.001 SPEECH OR AUDIO SIGNAL ANALYSIS-SYNTHESIS TECHNIQUES FOR REDUNDANCY REDUCTION, E.G., IN VOCODERS, ETC.; CODING OR DECODING OF SPEECH OR AUDIO SIGNALS; COMPRESSION OR EXPANSION OF SPEECH OR AUDIO SIGNALS, E.G., SOURCE-FILTER MODELS, PSYCHOACOUSTIC ANALYSIS, ETC. (EPO)
 [List of Pre Grant Publications for class 704 subclass E19.002][List of Patents for class 704 subclass E19.002]E19.002 Subclass E19.002 indent level is 1 Perceptual measures for quality assessment (EPO)
 [List of Pre Grant Publications for class 704 subclass E19.003][List of Patents for class 704 subclass E19.003]E19.003 Subclass E19.003 indent level is 1 Correction of errors induced by the transmission channel, if related to the coding (EPO)
 [List of Pre Grant Publications for class 704 subclass E19.004][List of Patents for class 704 subclass E19.004]E19.004 Subclass E19.004 indent level is 1 Lossless audio signal coding; perfect reconstruction of coded audio signal by transmission of coding error (EPO)
 [List of Pre Grant Publications for class 704 subclass E19.005][List of Patents for class 704 subclass E19.005]E19.005 Subclass E19.005 indent level is 1 Multichannel audio signal coding and decoding, i.e., using interchannel correlation to reduce redundancies, e.g., joint-stereo, intensity-coding, matrixing, etc. (EPO)
 [List of Pre Grant Publications for class 704 subclass E19.006][List of Patents for class 704 subclass E19.006]E19.006 Subclass E19.006 indent level is 1 Comfort noise, silence coding (EPO)
 [List of Pre Grant Publications for class 704 subclass E19.007][List of Patents for class 704 subclass E19.007]E19.007 Subclass E19.007 indent level is 1 Speech coding using phonetic or linguistical decoding of the source; reconstruction using text-to-speech synthesis (EPO)
 [List of Pre Grant Publications for class 704 subclass E19.008][List of Patents for class 704 subclass E19.008]E19.008 Subclass E19.008 indent level is 1 Systems using vocoders (EPO)
 [List of Pre Grant Publications for class 704 subclass E19.009][List of Patents for class 704 subclass E19.009]E19.009 Subclass E19.009 indent level is 1 Audio watermarking, i.e., embedding inaudible data in the audio signal (EPO)
[List of Pre Grant Publications for class 704 subclass E19.01][List of Patents for class 704 subclass E19.01]E19.01 Subclass E19.01 indent level is 1 Using spectral analysis, e.g., transform vocoders, subband vocoders, perceptual audio coders, psychoacoustically based lossy encoding, etc., e.g., MPEG audio, Dolby AC-3, etc. (EPO)
 [List of Pre Grant Publications for class 704 subclass E19.022][List of Patents for class 704 subclass E19.022]E19.022 Subclass E19.022 indent level is 1 Dynamic bit allocation (EPO)
[List of Pre Grant Publications for class 704 subclass E19.023][List of Patents for class 704 subclass E19.023]E19.023 Subclass E19.023 indent level is 1 Using predictive techniques; codecs based on source-filter modelization (EPO)
[List of Pre Grant Publications for class 704 subclass E19.024][List of Patents for class 704 subclass E19.024]E19.024 Subclass E19.024 indent level is 2 Determination or coding of the spectral characteristics, e.g., of the short-term prediction coefficients, etc. (EPO)
[List of Pre Grant Publications for class 704 subclass E19.026][List of Patents for class 704 subclass E19.026]E19.026 Subclass E19.026 indent level is 2 Determination or coding of the excitation function; determination or coding of the long-term prediction characteristics (EPO)
[List of Pre Grant Publications for class 704 subclass E19.039][List of Patents for class 704 subclass E19.039]E19.039 Subclass E19.039 indent level is 2 Details of speech and audio coders (EPO)
[List of Pre Grant Publications for class 704 subclass E21.001][List of Patents for class 704 subclass E21.001]E21.001 MODIFICATION OF AT LEAST ONE CHARACTERISTIC OF SPEECH WAVES (EPO)
[List of Pre Grant Publications for class 704 subclass E11.001][List of Patents for class 704 subclass E11.001]E11.001 MISCELLANEOUS ANALYSIS OR DETECTION OF SPEECH CHARACTERISTICS (EPO)
[List of Pre Grant Publications for class 704 subclass E13.001][List of Patents for class 704 subclass E13.001]E13.001 SPEECH SYNTHESIS; TEXT TO SPEECH SYSTEMS (EPO)
 
FOREIGN ART COLLECTIONS
 
      FOR000          CLASS-RELATED FOREIGN DOCUMENTS