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:
Oct. 24, 2006
Filed:
Apr. 27, 2004
Takehiro Moriya, Tokyo, JP;
Dai Yang, San Diego, CA (US);
Akio Jin, Tokyo, JP;
Kazunaga Ikeda, Fujisawa, JP;
Takehiro Moriya, Tokyo, JP;
Dai Yang, San Diego, CA (US);
Akio Jin, Tokyo, JP;
Kazunaga Ikeda, Fujisawa, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
Digital signal samples X in a floating-point format, each of which is composed of 1 bit of sign, 8 bits of exponent E and 23 bits of mantissa M, are converted through rounding by an integer formatting partinto digital signal samples Y in an integer format, the sequence of the digital signal samples Y is losslessly compression-coded by a compressing partinto a code sequence Ca, and the code sequence Ca is output. The digital signal samples Y are converted by a floating point formatting partinto digital signal samples X' in the floating-point format, a difference signal ΔX indicating the difference between the digital signal sample X′ and the digital signal sample X is determined by a subtraction part, the difference signal ΔX is losslessly coded, and the resulting code sequence Cb is output.