Back to results
US 2004/0165668 A1Published application
Signal transmitting receiving apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHiroyuki YAMAUCHI, Tadahiro YOSHIDA
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHiroyuki YAMAUCHI, Tadahiro YOSHIDA
Estimating the term…
A signal transmitting/receiving apparatus according to the present invention includes: a transmitting device for transmitting data; a receiving device for receiving the data; a data line for transmitting the data; and a supply line for transmitting a bias voltage for determining a voltage of the data line, wherein the transmitting device and the receiving device are connected to each other through the data line and the supply line, the transmitting device including: a driver circuit for outputting the data to the data line; and a bias generating means for generating the bias voltage and outputting the bias voltage to the supply line, the receiving device including: a terminating resistor connected to the data line; and a receiver circuit for detecting the data from the data line, wherein the data line is connected to the supply line via the terminating resistor.
1 A signal transmitting/receiving apparatus, comprising:
2 A signal transmitting/receiving apparatus according to claim 1, wherein the bias generating means comprises a bias generating circuit and a reference voltage generating circuit.
3 A signal transmitting/receiving apparatus according to claim 1, wherein the data line for transmitting the first data and the data line for transmitting the second data are different.
4 A signal transmitting/receiving apparatus according to claim 1, wherein the data line comprises a pair of differential lines.
5 A signal transmitting/receiving apparatus according to claim 3, wherein the data line for transmitting the first data comprises a pair of differential lines.
6 A signal transmitting/receiving apparatus according to claim 4, wherein the terminating resistor is connected so as to short circuit between the pair of differential lines, and the bias voltage is applied at substantially a mid-point of the terminating resistor.
7 A signal transmitting/receiving apparatus according to claim 5, wherein the terminating resistor is connected so as to short circuit between the pair of differential lines, and the bias voltage is applied at substantially a mid-point of the terminating resistor.
8 A signal transmitting/receiving apparatus according to claim 1, further comprising a ground interconnect line for connecting a ground of the transmitting device and a ground of the receiving device.
9 A signal transmitting/receiving apparatus according to claim 1, wherein the data line has flexibility.
10 A signal transmitting/receiving apparatus according to claim 8, wherein the ground interconnect line has flexibility.
11 A transmitting device connected to a data line which transmits the first data and the second data to a receiving device, wherein:
12 A transmitting device according to claim 11, wherein the bias generating means comprises a bias generating circuit and a reference voltage generating circuit.
13 A transmitting device according to claim 11, wherein the data line for transmitting the first data and the data line for transmitting the second data are different.
14 A transmitting device according to claim 11, further connected to a ground interconnect line for transmitting a ground potential of the transmitting device to the receiving device.
15 A transmitting device according to claim 11, wherein the data line comprises a pair of differential lines, and the terminating resistor is connected so as to short circuit between the pair of differential lines, whereby the bias voltage is applied at substantially a midpoint of the terminating resistor.
16 A receiving device connected to a data line which transmit first data and second data for receiving the first data and the second data from a transmitting device, the transmitting device comprising:
17 A receiving device according to claim 16, wherein the bias generating means comprises a bias generating circuit and a reference voltage generating circuit.
18 A receiving device according to claim 16, wherein the data line for transmitting the first data and the data line for transmitting the second data are different.
19 A receiving device according to claim 16, wherein:
20 A receiving device according to claim 16, further connected to a ground interconnect line which transmits a ground potential of the transmitting device.
21 A signal transmitting/receiving apparatus, comprising:
22 A signal transmitting/receiving apparatus according to claim 21, wherein at least one of the plurality of terminating resistors and the at least one bias generating means are connected through an electric resistance.
23 A signal transmitting/receiving apparatus according to claim 21, wherein at least one of the plurality of terminating resistors and the at least one bias generating means are connected through an amplifier.