Data transmission system and receiving device
First Claim
Patent Images
1. A data transmission system, comprising:
- a transmitting device configured to transmit a data signal;
a receiving device configured to receive the data signal transmitted from the transmitting device; and
a transmission path for transmitting the data signal from the transmitting device to the receiving device,the receiving device comprising;
a detection unit configured to detect a timing at which a polarity of the received data signal is inverted;
a plurality of resistors to be selectively connected to a terminal side of the transmission path; and
a switching unit configured to switch the plurality of resistors based on the detected timing, whereinthe switching unit is configured to select a first resistor of the plurality of resistors, the first resistor having a higher resistance value than a characteristic impedance of the transmission path, during a first period, which is a predetermined period from a time point at which the polarity is inverted, and to select a second resistor of the plurality of resistors, the second resistor having the same resistance value as the characteristic impedance, during a second period, which is a period from an end point of the first period until the polarity is inverted next.
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Abstract
Provided is a data transmission system, including: a transmitting device configured to transmit a data signal; a receiving device configured to receive the transmitted data signal; and a transmission path for transmitting the data signal, the receiving device including: a detection unit configured to detect a timing at which a polarity of the received data signal is inverted; a plurality of resistors to be selectively connected to a terminal side of the transmission path; and a switching unit configured to switch the plurality of resistors based on the detected timing, the switching unit being configured to select a resistor having a higher resistance value than a characteristic impedance of the transmission path, during a first period, which is a predetermined period from a time point at which the polarity is inverted, and to select, after the first period, a resistor having the same resistance value as the characteristic impedance.
71 Citations
7 Claims
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1. A data transmission system, comprising:
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a transmitting device configured to transmit a data signal; a receiving device configured to receive the data signal transmitted from the transmitting device; and a transmission path for transmitting the data signal from the transmitting device to the receiving device, the receiving device comprising; a detection unit configured to detect a timing at which a polarity of the received data signal is inverted; a plurality of resistors to be selectively connected to a terminal side of the transmission path; and a switching unit configured to switch the plurality of resistors based on the detected timing, wherein the switching unit is configured to select a first resistor of the plurality of resistors, the first resistor having a higher resistance value than a characteristic impedance of the transmission path, during a first period, which is a predetermined period from a time point at which the polarity is inverted, and to select a second resistor of the plurality of resistors, the second resistor having the same resistance value as the characteristic impedance, during a second period, which is a period from an end point of the first period until the polarity is inverted next. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A receiving device, comprising:
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a receiving unit configured to receive a data signal transmitted from a transmitting device via a transmission path; a detection unit configured to detect a timing at which a polarity of the received data signal is inverted; a plurality of resistors to be selectively connected to a terminal side of the transmission path; and a switching unit configured to switch the plurality of resistors based on the detected timing, wherein the switching unit is configured to select a first resistor of the plurality of resistors, the first resistor having a higher resistance value than a characteristic impedance of the transmission path, during a first period, which is a predetermined period from a time point at which the polarity is inverted, and to select a second resistor of the plurality of resistors, the second resistor having the same resistance value as the characteristic impedance, during a second period, which is a period from an end point of the first period until the polarity is inverted next.
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Specification
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Current AssigneePanasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
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Original AssigneePanasonic Liquid Crystal Display Company Limited (Panasonic Holdings Corporation)
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InventorsTakahashi, Kouji
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Primary Examiner(s)Perez, James M
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Application NumberUS15/062,197Time in Patent Office309 DaysField of Search375219-220, 375229-236, 375286-294, 375316-352US Class Current1/1CPC Class CodesH04W 56/0015 one node acting as a refere...
