Signal transmitting device suitable for fast signal transmission

Details Signal transmitting device suitable for fast signal transmission Signal transmitting device suitable for fast signal transmission

1995-02-15

1997-09-16

Chin, Wellington

Pulse or digital communications

Cable systems and components

320 30, 320 86, 333 32, H04B 140, H03K 1716, H03K 190175

Patent

active

056688342

ABSTRACT:
A signal transmitting device includes a transmitting circuit block having a driving circuit connected to a main transmission line for driving a signal and an intra-block transmission line for transmitting a signal sent from the driving circuit to the main transmission line. The device also includes a receiving circuit block having a transmitting/receiving circuit connected to the main transmission line for receiving a signal inputted from said main transmission line and outputting the received signal to a next stage, an intra-block transmission line for transmitting a signal input from the main transmission line to the transmitting/receiving circuit, a receiving circuit for receiving an output signal from the transmitting/receiving circuit, and a next state intra-block transmission line to enable high-speed signal transmission, the main transmission line includes a termination resistor having s resistance equal to an impedance of the main transmission line and the intra-block transmission line includes an element having a resistance substantially equal to a value derived by subtracting a half of the impedance value of the main transmission line from an impedance value of the intra-block transmission line also, to improve transmission speed along the next-stage intra-block transmission line, a termination resistor is provided from the next-stage intra-block transmission line and the transmitting/receiving circuit and the next-stage intra-block transmission line to produce a voltage drop thereacross.

REFERENCES:
patent: 3710282 (1973-01-01), Seinecke
patent: 4922449 (1990-05-01), Donaldson et al.
patent: 4987318 (1991-01-01), Burke et al.
patent: 5019728 (1991-05-01), Sanwo et al.
patent: 5046072 (1991-09-01), Shimizu et al.
patent: 5227677 (1993-07-01), Furman
patent: 5548226 (1996-08-01), Takekuma et al.
patent: 5568063 (1996-10-01), Takekuma et al.
"New I/0 Proposal", Fujitsu, JEDEC JC16, San Diego, Dec. 5, 1993, pp. 1-12.
Nikkei Electronics, Nov. 27, 1993, pp. 269-290.

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