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US 5,315,299 AGranted
Multiplex data communicating apparatus applicable to automotive vehicle
AssigneeNissan Motor Co., Ltd.
InventorTakashi Matsumoto
Life of this patent
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Abstract
A data communication apparatus applicable to an automotive vehicle is disclosed in which a transmission data having a combination of bit data of "1" and/or "0" is coded into a communication signal based on an interval of time on a rising edge and/or a falling edge and the communication signal is transmitted via at least one signal transmission line. At least one of the intervals of times at a beginning of which a predetermined rising or falling edge occurs and at an end of which the subsequent rising or falling edge occurs is measured at a signal reception side and the communication signal is then decoded into the bit data of either "1" or "0" according to the result of the measured interval of time.
Claims20
A data communication apparatus, comprising:
- a) signal transmitting means for coding a transmission data having a combination of bits "1" and/or "0" data into a communication signal based on an interval of time between a first rising edge and a subsequent rising edge, the rising edge being defined as the communication signal state changing from a relatively low potential level to a relatively high potential level and for outputting the communication signal to at least one signal transmission line;
- b) first rising edge detecting means for detecting the rising edge of the communication signal inputted via the signal transmission line;
- c) first rising edge interval of time measuring means for measuring the interval of time from a time at which the first rising edge detected by the first rising edge detecting means occurs to a time at which the subsequent rising edge occurs;
- and
- d) decoding means for decoding the communication signal into either bit "1" or bit "0" according to the interval of time measured by the first rising edge interval of time measuring means.
2 more elements
A data communication apparatus, comprising:
- a) signal transmitting means for coding a transmission data having a combination of bits "1" and/or "0" data into a communication signal based on an interval of time between a falling edge and a subsequent falling edge, the falling edge being defined as the communication signal state changing from a relatively high potential level to a relatively low potential level and for outputting the communication signal to at least one signal transmission line;
- b) second falling edge detecting means for detecting the falling edge of the communication signal inputted via the signal transmission line;
- c) second falling edge interval of time measuring means for measuring the interval of time from a time at which the falling edge detected by the second falling edge detecting means occurs to a time at which the subsequent falling edge occurs;
- and
- d) decoding means for decoding the communication signal into either bit "1" or bit "0" according to the interval of time measured by the second falling edge interval of time measuring means.
2 more elements
A data communication apparatus, comprising:
- a) signal transmitting means for coding a transmission data having a combination of bits "1" and/or "0" data into a communication signal based on a first interval of time between a first rising edge and a subsequent rising edge, the rising edge being defined as the communication signal state changing from a relatively low potential level to a relatively high potential level, and based on a second interval of time at which a falling edge and a subsequent falling edge occur, the falling edge being defined as the communication signal state changing from the relatively high potential level to the relatively low potential level, and for outputting the communication signal to at least one signal transmission line;
- b) first rising edge detecting means for detecting the rising edge of the communication signal inputted via the signal transmission line;
- c) second falling edge detecting means for detecting the falling edge of the communication signal inputted via the signal transmission line;
- d) first rising edge interval of time measuring means for measuring the first interval of time from a time at which the first rising edge detected by the first rising edge detecting means occurs to a time at which the subsequent rising edge occurs;
- e) second falling edge interval of time measuring means for measuring the second interval of time from a time at which the falling edge detected by the second falling edge detecting means occurs and the subsequent falling edge occurs;
- and
- f) decoding means for decoding the communication signal into either bit "1" or bit "0" according to the first and second intervals of times measured by the respective first and second rising and falling edge interval of time measuring means.
4 more elements
Dependencies are inferred from the claim text.