Arithmetic coding apparatus and image processing apparatus
Patent 6677869 Issued on January 13, 2004. Estimated Expiration Date: 
January 17, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 17, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod for quantizing intra-block DC transform coefficients using the human visual characteristics Decoding variable-length encoded signals Syntax-based arithmetic coding for low bit rate videophone Image coding method and system for providing reduced bit rate arithmetic codes Patent #: 5867600 InventorAssigneeApplicationNo. 10/046764 filed on 01/17/2002US Classes:341/107, To or from code based on probability341/67, To or from variable length codes382/247Arithmetic codingExaminersPrimary: Wamsley, PatrickAttorney, Agent or FirmInternational ClassesH03M 7/40 (20060101)G06T 9/00 (20060101) H04N 7/30 (20060101) Foreign Application Priority Data2001-02-22 JPAbstractAn arithmetic coding apparatus for carrying out complete pipeline processing is provided. This arithmetic coding apparatus analyzes an input image, reads image information accurately and performs arithmetic coding at ultra-high speed. Using a future prediction type Qe memory removes disturbance in the pipeline caused by renormalization. The arithmetic coding apparatus also generates a common context when coding multi-valued images without distinguishing between an AC component and DC component of a DCT coefficient. The apparatus is also provided with a circuit for outputting an arithmetic code which is a variable-length code with the length fixed to facilitate editing of a reconstructed image.Other References
| |
