Bus data transmission apparatus, method for transmitting bus data and bus data communication apparatus

A data communication apparatus comprising:

• a transmitter receiving bus data comprising a plurality of bytes, if a previous byte of the plurality of bytes is identical to upper bits of a current byte, compressing the bus data in a combination of a full-byte and a half-byte by allowing the previous byte to be constituted with the full-byte and allowing the current byte to be constituted with the half-byte excluding the upper bits, and arraying the compress bus data in a preset bus bandwidth to transmit;
• a data bus delivering the compressed bus data by a preset bus bandwidth unit;
• a control bus delivering a pattern signal comprising information on a transmission pattern of the compressed bus data;
• and
• a receiver receiving the compressed bus data and the pattern signal through the data bus and the control bus, respectively, and restoring the excluded upper bits using the received pattern signal.

A data transmission method comprising:

• receiving bus data comprising a plurality of bytes to compare upper bits of a previous byte with upper bits of a current byte among the plurality of bytes;
• allowing the previous byte to be constituted with the full-byte and allowing the current byte to be constituted with the half-byte excluding the upper bits of the current byte if the upper bits of the previous byte are identical to the upper bits of the current byte;
• combining the full-byte and the half-byte to compress the bus data;
• and
• arraying the compressed bus data in a preset bus bandwidth to transmit.