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. 01, 2003
Filed:
Dec. 19, 1997
Claude Le Dantec, Saint Hilaire des Landes, FR;
Philippe Piret, Cesson Sevigne, FR;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A transmission device has labeling means adapted to map each symbol of a first alphabet to secondary digital data belonging to a second alphabet having Q symbols, Q being strictly greater than P, wherein P symbols of the second alphabet each exclusively represent one and only one symbol of the first alphabet. A coder determines redundant data belonging to the second alphabet, using coding rules that take into account the secondary digital data. A transmitter modulates a physical quantity into a series of signals each capable of taking a number P of different values, and according to transmission rules successively representing the digital data to be transmitted and the redundant data.