Receiving apparatus and method of same, recording apparatus and method of same, and data recording system

A receiving method, comprising:

• receiving data synchronized with a predetermined clock signal;
• detecting from said received data values of at least three bits of received data in a cycle defined by a period started from a desired position and corresponding to a cycle of said clock signal;
• detecting the longest period when the same value continues based on the detected values of the plurality of bits of received data, and
• selecting the received data of the approximate center of the period.

A recording apparatus, comprising:

• an input circuit for receiving as input data generated synchronized with a predetermined clock signal;
• a data detection circuit for detecting values of at least three bits of input data in a cycle defined by a period started from a desired position and corresponding to a cycle of said clock signal;
• a selecting circuit for selecting from the input data with the detected values the input data with the least change of the value with respect to the input data of values detected immediately before and after substantially in each cycle;
• and
• a write circuit for writing said selected input data on a recording medium.

A recording method comprising:

• receiving as input data generated synchronized with a predetermined clock signal;
• detecting, for the input data, values of at least three bits of input data in a cycle defined by a period started from a desired position and corresponding to a cycle of said clock signal;
• selecting from the input data with the detected values the input data with the least change of the value with respect to the input data of values detected immediately before and after substantially in each cycle;
• and
• recording said selected input data on a recording medium.

A data recording system, having a data processing apparatus and a plurality of recording apparatuses, wherein

• said data processing apparatus comprises;
• an oscillator for generating a clock signal,
• a data processing circuit for generating the serial data synchronized with said clock signal, and
• a transmitting circuit for transmitting said clock signal and said serial data, and
• each of said recording apparatuses comprises;
• an receiving circuit for receiving said clock signal and said serial data,
• a data detection circuit for detecting values of at least three bits of the serial data in a cycle defined by a period started from a desired position and corresponding to a cycle of said clock signal,
• a selecting circuit for selecting from the serial data with the detected values the serial data with the least change of the value with respect to the serial data of values detected immediately before and after substantially in each cycle, and
• a write circuit for writing said selected serial data on a recording medium.