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Patent Searching and Data


Title:
INTERFACE CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2002/076055
Kind Code:
A1
Abstract:
An interface circuit (103) is integrated in an LSI. A comparator circuit (105) having a hysteresis characteristic compares the signal (111) outputted from a driver circuit (101) through a signal transmission line (102) with a signal (112) generated by passing the signal (111) through a delay circuit (104) so as to extract the temporal variation of the signal (111). The output signal (113) of the interface circuit (103) is at an H or L level depending on the temporal variation of the signal (111) and delivered to a receiver circuit (106). An FIR filter circuit subjects the output signal (111) from the signal transmit line and the signal (112) generated by passing the signal (111) through the delay circuit (104) to a waveform operation to restore a signal of H or L level. Even if the distortion of the signal waveform due to high-speed signal transmission in an LSI or between LSIs is great, the signal can be normally transmitted.

Inventors:
Saito, Tatsuya c/o Central Research Laboratory (Hitachi Ltd., 280, Higashikoigakubo 1-chom, Kokubunji-shi Tokyo, 185-8601, JP)
Baba, Takashige c/o Central Research Laboratory (Hitachi Ltd., 280, Higashikoigakubo 1-chom, Kokubunji-shi Tokyo, 185-8601, JP)
Sugure, Yasuo c/o Central Research Laboratory (Hitachi Ltd., 280, Higashikoigakubo 1-chom, Kokubunji-shi Tokyo, 185-8601, JP)
Yamashita, Hiroki c/o Central Research Laboratory (Hitachi Ltd., 280, Higashikoigakubo 1-chom, Kokubunji-shi Tokyo, 185-8601, JP)
Application Number:
PCT/JP2002/000560
Publication Date:
September 26, 2002
Filing Date:
January 25, 2002
Export Citation:
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Assignee:
HITACHI, LTD. (6 Kanda Surugadai 4-chome, Chiyoda-ku, Tokyo, 101-8010, JP)
Saito, Tatsuya c/o Central Research Laboratory (Hitachi Ltd., 280, Higashikoigakubo 1-chom, Kokubunji-shi Tokyo, 185-8601, JP)
Baba, Takashige c/o Central Research Laboratory (Hitachi Ltd., 280, Higashikoigakubo 1-chom, Kokubunji-shi Tokyo, 185-8601, JP)
Sugure, Yasuo c/o Central Research Laboratory (Hitachi Ltd., 280, Higashikoigakubo 1-chom, Kokubunji-shi Tokyo, 185-8601, JP)
Yamashita, Hiroki c/o Central Research Laboratory (Hitachi Ltd., 280, Higashikoigakubo 1-chom, Kokubunji-shi Tokyo, 185-8601, JP)
International Classes:
H03H17/06; H03K5/08; H03K5/13; H04L25/02; H04L25/03; (IPC1-7): H04L25/03; H03K5/08; H04L25/02
Foreign References:
JPS5665523A
JP2000236240A
JPH04186940A
JPH08223227A
JPS6369315A
JPH06276083A
Attorney, Agent or Firm:
Sakuta, Yasuo c/o Hitachi Ltd. (5-1, Marunouchi 1-chom, Chiyoda-ku Tokyo, 100-8220, JP)
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