Digital isolator and digital signal transmission method
AssigneeSilergy Semiconductor Technology (Hangzhou) LTD
InventorsYufei Dong, Xiaodong Huang, Ye Yuan, Chen Zhao
Life of this patent
Estimating the term…
Abstract
A digital isolator can include: an encoding circuit configured to receive and encode an input digital signal, in order to generate an encoded signal, wherein a rising edge of the input digital signal is encoded as a first pulse sequence, and a falling edge of the input digital signal is encoded as a second pulse sequence; an isolation element coupled to the encoding circuit, and being configured to transmit the encoded signal in an electrically isolated manner; and a decoding circuit configured to receive the encoded signal through the isolation element, and to decode the encoded signal, in order to generate an output digital signal consistent with the input digital signal.
Claims20
A digital isolator comprising:
- a) an encoding circuit configured to receive and encode an input digital signal, in order to generate an encoded signal, wherein a rising edge of the input digital signal is encoded as a first pulse sequence, and a falling edge of the input digital signal is encoded as a second pulse sequence;
- b) an isolation element comprising a capacitor or a transformer, the isolation element being coupled to the encoding circuit, and being configured to transmit the encoded signal in an electrically isolated manner;
- and
- c) a decoding circuit configured to receive the encoded signal through the isolation element, and to decode the encoded signal, in order to generate an output digital signal consistent with the input digital signal,
- d) wherein the first pulse sequence comprises a plurality of first pulse groups, and a time interval between the first pulse groups is a first time, wherein the second pulse sequence comprises a plurality of second pulse groups, and a time interval between the second pulse groups is a second time different from the first time, and wherein each of the first pulse groups and the second pulse groups comprises at least one pulse.
A method of digital signal transmission, the method comprising:
- a) receiving and encoding an input digital signal to generate an encoded signal;
- b) encoding a rising edge of the input digital signal as a first pulse sequence, and a falling edge of the input digital signal as a second pulse sequence;
- c) transmitting the encoded signal in an electrically isolated manner;
- and
- d) receiving and decoding the encoded signal to generate an output digital signal consistent with the input digital signal,
- e) wherein the first pulse sequence comprises a plurality of first pulse groups, and a time interval between the first pulse groups is a first time, wherein the second pulse sequence comprises a plurality of second pulse groups, and a time interval between the second pulse groups is a second time different from the first time, and wherein each of the first pulse groups and the second pulse groups comprises at least one pulse.
Dependencies are inferred from the claim text.