| US 7,593,468 B2 | ||
| Method of interfacing a high speed signal | ||
| Jae-Jin Park, Sungnam-si (Korea, Republic of); and Seung-Bin You, Suwon-si (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd., (Korea, Republic of) | ||
| Filed on Jan. 31, 2005, as Appl. No. 11/47,255. | ||
| Claims priority of application No. 10-2004-0006624 (KR), filed on Feb. 02, 2004. | ||
| Prior Publication US 2005/0238125 A1, Oct. 27, 2005 | ||
| Int. Cl. H04B 14/04 (2006.01) | ||
| U.S. Cl. 375—242 | 11 Claims |
| 1. A method of interfacing a high speed signal, comprising:
receiving a series of digital signals from a transmitter in response to a clock signal;
coding into a Gray code at least once the received digital signals based on a K-L level pulse amplitude modulation (PAM) system
in response to the clock signal, wherein K and L are natural numbers and K≠L, and wherein the K-L level PAM system alternately
uses a K-level PAM and an L-level PAM, wherein K is 8 and L is 4, and wherein the 4-level PAM has a lowest level corresponding
to a third lowest level of the 8-level PAM, and a highest level corresponding to a third highest level of the 8-level PAM;
and
transferring the coded digital signals to a receiver, wherein coding the received digital signals includes:
coding an N-th digital signal among the series of digital signals based on the K-level PAM in response to the clock signal,
wherein N is an integer; and
coding an N+1-th digital signal among the series of digital signals based on the L-level PAM in response to the clock signal.
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