Fast transmission line implemented with receiver, driver, terminator and IC arrangements

A signal transmitting device comprising:

• a main transmission line terminated by elements each having a resistance substantially equal to an impedance value of said main transmission line itself;
• a first circuit block connected to said main transmission line, said first circuit block including a driving circuit for driving a signal, and a first intra-block transmission line with a predetermined impedance for transmitting the signal outputted from said driving circuit to said main transmission line, said first circuit block including an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said first intra-block transmission line;
• an at least one second circuit block connected to said main transmission line, said at least one second circuit block including a receiving circuit for receiving a signal;
• a second intra-block transmission line with a predetermined impedance for transmitting a signal inputted from said main transmission line to said receiving circuit, said second circuit block including an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from said predetermined impedance of said second intra-block transmission line;
• wherein said receiving circuit is an NMOS type differential receiving circuit, said driving circuit is connected to the power supply and the ground through an element having a switching function, and the minimum resistance of said element having said switching function is 50.OMEGA. or less.

A signal transmitting device comprising:

• a main transmission line being terminated by elements each having a resistance substantially equal to an impedance value of said main transmission line;
• first and second circuit blocks connected to said main transmission line, each of said blocks having a driving and receiving circuit for driving and receiving a signal, and an intra-block transmission line having a predetermined impedance for transmitting a signal between said main transmission line and said driving and receiving circuit, each of said circuit blocks also having an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from said predetermined impedance of said intra-block transmission line;
• a mother board on which said main transmission line is formed;
• and
• first and second daughter boards connected to said mother board, each of said daughter boards having said intra-block transmission line formed as a printed wiring and said driving circuit and said receiving circuit mounted thereon.

A printed board being connected to a main transmission line terminated by one or two elements having a resistance substantially equal to an impedance of said main transmission line, comprising:

• an integrated circuit having a driving circuit driving a signal;
• a substrate line with a predetermined impedance for transmitting a signal between said integrated circuit and said main transmission line;
• and
• an element, coupled to the substrate line and the main transmission line, having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said substrate line;
• and
• a board on which said integrated circuit and said substrate line are mounted.

A signal transmitting device comprising:

• a mother board having a main transmission line terminated by one or two elements having a resistance substantially equal to an impedance of said main transmission line;
• two or more daughter boards connected to said mother board and having substrate lines with predetermined impedances mounted thereon, respectively, each of said daughter boards including an element having a resistance substantially equal to a value derived by subtracting a half of an impedance of said main transmission line from the predetermined impedance of said substrate line;
• and
• integrated circuits mounted on said daughter boards, connected to said substrate lines and comprised of a set of circuits driving and receiving a signal.

A signal receiving device comprising:

• a main transmission line terminated at one end or both ends thereof;
• a receiving circuit for receiving a signal;
• a stubline for connecting said main transmission line to said receiving circuit, wherein the impedance of said stubline is higher than the impedance of said main transmission line;
• and
• a resistor inserted between said main transmission line and said stubline, said resistor having a resistance value to provide impedance matching between the main transmission line and the stubline to suppress reflections at a branch point between the main transmission line and the stubline.