Current mode interface receiver with process insensitive common mode current extraction and the method
AssigneeHimax Technologies Limited
InventorHui-Min Wang
Life of this patent
Estimating the term…
Abstract
A data communication system comprises a transmitter and a receiver. A plurality of current mode drivers at the transmitter are used to transmit clock and data signals to the receiver. A plurality of current mode sinks at the receiver are used to receive the transmitted clock and data signal. The present invention provides an improved current mode interface receiver with a process insensitive common mode current extraction circuit. The proposed common mode current extraction circuit will generate a current reference based on the received clock signal, so as to accurately interpret the received clock and data signals.
Claims14
A current mode interface receiver comprising:
- a plurality of current mode sinks that 1) receive a plurality of input signals including a clock signal and 2) respectively generate a mirror current based on said received input signal;
- and
- a common mode current extractor that receives said clock signal and generates a common mode current based on said clock signal;
- wherein said plurality of current mode sinks receive said common mode current and respectively generate a full-swing output signal by comparing said mirror current with said common mode current.
A current mode interface receiving method, said method comprising the steps of:
- providing a plurality of input signals including a clock signal to a plurality of current mode sinks;
- providing a common mode current based on said clock signal, wherein
- said plurality of current mode sinks respectively provide a mirror current based on said received input current and generate a full-swing output signal by comparing said mirror current with said common mode current.
Dependencies are inferred from the claim text.