Means and method of data encoding and communication at rates above the channel bandwidth
AssigneeAcuid Corporation (Guernsey) Limited
InventorsIgor Anatolievich Abrosimov, Alexander Roger Deas, Gordon John Faulds
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Abstract
The present invention relates to the reduction of artifacts introduced by sending data at a higher rate than the bandwidth of the communication channel, such as the voltage and current offsets introduced in the data at the receiver as a function of the preceding data.
Claims22
A coding means for encoding data represented by input symbols into codes for serially transmitting the codes along a communication channel, the codes being represented in the channel by signals having a limited minimum and maximum pulse width and sampled by a receiver at each receiver's clock period,
- wherein the input symbols are encoded to have the minimum signal pulse width longer than one period of the receiver's sampling clock.
A coding means according to claims 1-5, wherein the minimal pulse width is equal to 2 bit intervals.
A method of coding data represented by input symbols into codes for transmitting along a communication channel comprising a transmitter for serially transmitting codes represented in the channel by signals having a limited minimum and maximum pulse width and a receiver for sampling data at each clock period,
- wherein the input symbols are encoded to have the minimum signal pulse width longer than one period of the receiver's sampling clock.
A method of data communication comprising the steps of coding input data, transmitting the obtained output codes and sampling the output codes at a receiver at each clock period, wherein the coding is performed so that the output codes have the minimum signal pulse width longer than one period of the receiver's sampling clock.
A communication apparatus for transmitting and receiving digital data, comprising:
- a coder for coding data represented by input symbols into codes;
- a transmitter for serially transmitting along a communication channel the codes represented in the channel by signals having a limited minimum and maximum pulse width;
- and
- a receiver for sampling data signals at each clock period,
- wherein the coder codes input symbols to have the minimum signal pulse width longer than one period of the receiver's sampling clock.
Dependencies are inferred from the claim text.