Coding system
Patent 5307062 Issued on April 26, 1994. Estimated Expiration Date: 
December 15, 2012. 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.
December 15, 2012. 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 ReferencesFacsimile encoding communication system Method and means for arithmetic coding utilizing a reduced number of operations Adaptive source modeling for data file compression within bounded memory Real-time data compression of broadcast video signals Coding method of image information Patent #: 5059976 InventorsApplicationNo. 990377 filed on 12/15/1992US Classes:341/107, To or from code based on probability341/51Adaptive codingExaminersPrimary: Young, BrianAttorney, Agent or FirmInternational ClassH03M 007/00Foreign Application Priority Data1990-02-26 JPAbstractA coding system comprises the comparing circuit which compares a magnitude of the range on the number line which is allocated to the most probability symbol with a magnitude of the fixed range on the number line which is allocated to the Less Probability Symbol. If the range allocated to the MPS is smaller than that to the LPS, and when the symbol is the MPS, the range allocated to the LPS is generated. If the range allocated to the MPS is smaller than that to the LPS, and when the symbol is the LPS, the range allocated to the MPS is generated. By the system, a coding efficiency is improved especially when a probability of occurrence of LPS (Less Probability Symbol) is approximate to 1/2.Other References
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