[특허]Data burst randomizer

Data burst randomizer 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-013/02 H04B-001/69
출원번호	US-0291231 (1994-08-16)
발명자 / 주소	Padovani Roberto (San Diego CA) Jou Yu-Cheun (San Diego CA) Kindred Daniel R. (San Diego CA) McDonough John G. (San Diego CA) Rueth Timothy I. (Cardiff-by-the-Sea CA)
출원인 / 주소	Qualcomm Incorporated (San Diego CA 02)
인용정보	피인용 횟수 : 92 인용 특허 : 0

초록 ▼

A method and system, for use in a communication system in which data is transmitted in data frames of a predetermined time duration, for the positioning of the data within the data frames for transmission. A computation circuit computes according to the deterministic code a pseudorandom position for

대표청구항 ▼

A spread spectrum modulator for modulating variable rate digital data generated in data frames of a predetermined time duration with each frame of data having a number of data bits which is a predetermined multiple of data bits in a frame of a least number of data bits, comprising: encoder means for receiving and convolutionally encoding a frame of variable rate digital data, and generating a frame of symbol data with said symbol data in a first ordered sequence; interleaver means for reordering said symbol data in said frame and generating said frame of symbol data in a second ordered sequence, and if said frame of symbol data corresponds to a frame of variable rate digital data having a number of data bits less than a frame maximum of data bits said interleaver means generating said symbol data and a predetermined number of repeats of said symbol data in said frame of symbol data in said second ordered sequence to generate a predetermined frame maximum number of symbols in said frame of sequence symbol data in said second ordered sequence; symbol encoder means for determining from a value of each one of consecutive portions of said frame of symbol data in said second ordered sequence an modulation symbol of a set of modulation symbols, and generating an output frame of function data; first spreading means for generating a first pseudorandom noise (PN) code; first combining means for combining said frame of modulation symbol data and said first PN code, and generating an output frame of first PN spread data; randomizer logic means responsive to said first PN code and an indication of a data rate of said frame variable rate digital data for generating a mask signal; and filter means for responsive to said mask signal for filtering out portions of said first PN spread data in said frame of first PN spread data.

이 특허를 인용한 특허 (92)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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