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US 8,896,392 B2Granted
Transmission system
AssigneeHochiki Corporation
InventorMitsuhiro Kurimoto
Life of this patent
Estimating the term…
Abstract
A transmission system transmits a signal from a transmission terminal to a reception terminal via a pair of transmission lines. The transmission terminal side of the transmission lines is connected to a first resistor having a predetermined resistance value depending on the characteristic impedance of the transmission lines.
Claims7
A transmission system comprising:
- a receiver;
- a plurality of sensors;
- and
- a pair of transmission lines that electrically connect the receiver to the plurality of sensors,
- wherein the receiver regularly polls the plurality of sensors by outputting a voltage pulse to between the pair of transmission lines as a bit string corresponding to a downward telegraphic message,
- each of the plurality of sensors transmits a response to the receiver by outputting a current pulse to between the pair of transmission lines as a bit string corresponding to an upward telegraphic message,
- the receiver includes a transmission circuit section that outputs the voltage pulse and receives the current pulse, and a first resistor having a predetermined resistance value depending on a characteristic impedance of the pair of transmission lines,
- the first resistor is connected in series between the transmission circuit section and only one of the pair of transmission lines, and
- each of the plurality of sensors does not include a resistor having a predetermined resistance value depending on a characteristic impedance of the pair of transmission lines.
6 more elements
A transmission system comprising:
- a receiver;
- a plurality of sensors;
- and
- a pair of transmission lines that electrically connect the receiver to the plurality of sensors,
- wherein the receiver regularly polls the plurality of sensors by outputting a voltage pulse to between the pair of transmission lines as a bit string corresponding to a downward telegraphic message,
- each of the plurality of sensors transmits a response to the receiver by outputting a current pulse to between the pair of transmission lines as a bit string corresponding to an upward telegraphic message,
- the receiver includes:
- a transmission circuit section that outputs the voltage pulse and receives the current pulse;
- two second resistors having a predetermined resistance value depending on a characteristic impedance of the pair of transmission lines;
- and two inductances that bypass direct-current power,
- one of the two second resistors is connected in series between the transmission circuit section and one of the pair of transmission lines,
- the other of the two second resistors is connected in series between the transmission circuit section and the other of the pair of transmission lines,
- one of the two inductances is connected in parallel with the one of the two second resistors,
- the other of the two inductances is connected in parallel with the other of the two second resistors, and
- each of the plurality of sensors does not include a resistor having a predetermined resistance value depending on a characteristic impedance of the pair of transmission lines.
12 more elements
Dependencies are inferred from the claim text.