The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 2004
Filed:
Jul. 09, 1999
Masatake Ohmori, Zama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A coding apparatus includes an arithmetic coding medium as a specified information setting medium and an information processing apparatus provided with the above coding apparatus. The coding apparatus can obtain a high confidentiality and practice an arithmetic coding method without losing high-speed performance in order to realize the method. The coding apparatus provided with the arithmetic coding medium includes a state memory for storing a reference address for addressing a probability table into respective addresses addressed by data extracted by a model template and a probability table previously storing different appearance probabilities in the respective addresses. The specified information is previously written in a specified information memory. When the coding operation is started, an initializing medium reads out the specified information from the specified information memory, obtains the initial address frown the specified information, and sets the initial address to the state memory as the initial address of the reference address.