Title:
CLOCK DATA RECOVERY DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/044407
Kind Code:
A1
Abstract:
A clock data recovery device (1) comprises a sampler section (10), a detection section
(20), an offset determining section (30), a clock output section (40), and a DA
converter (50). The phases of clock signals (CK, CKX) are adjusted so as to match
the phase of an input digital signal. The given amount (± Voff) of an offset
in the sampler section (10) is adjusted so as to match the peak time of the data transition
time distribution of a first signal when a value D (n-1) is at a high level and adjusted
so as to match the peak time of the data transition time distribution of a second
signal when the value D (n-1) is at a low level. Any one of the clock signals (CK,
CKX) is outputted as the recovered clock signal. The time-series data of a digital
value D (n) is outputted as the recovered data.
Inventors:
OZAWA SEIICHI (JP)
Application Number:
PCT/JP2007/067400
Publication Date:
April 17, 2008
Filing Date:
September 06, 2007
Export Citation:
Assignee:
THINE ELECTRONICS INC (JP)
OZAWA SEIICHI (JP)
OZAWA SEIICHI (JP)
International Classes:
H04L25/03; H03L7/08; H03L7/081; H04L7/02
Foreign References:
| JPH01125153A | 1989-05-17 | |||
| JPS6460134A | 1989-03-07 | |||
| JPH07221800A | 1995-08-18 | |||
| JP2003258924A | 2003-09-12 | |||
| JPH07221800A | 1995-08-18 | |||
| JP2004507963A | 2004-03-11 |
Other References:
See also references of EP 2079210A4
Attorney, Agent or Firm:
HASEGAWA, Yoshiki et al. (Ginza First Bldg.10-6 Ginza,1-chome, Chuo-ku, Tokyo 61, JP)
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