Patent Number: 6,167,539

Title: Transmitting apparatus with code formation based on detected transmission channel data

Abstract: There is provided a data sending apparatus comprising a detecting unit to detect a transmission channel state and a coding unit for coding input information and obtaining transmission data, wherein the coding unit changes a coding processing operation in accordance with an output of the detecting unit. There is also provided a data receiving apparatus comprising a receiving unit to receive data transmitted from a communication partner, a detecting unit to detect a transmission error rate of the reception data, and a transmitting unit to transmit the transmission error rate detected by the detecting unit to the communication partner.

Inventors: Takizawa; Hiroshi (Yokohama, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: H03M 7/40 (20060101); H04M 001/14 ()

Expiration Date: 12/26/2017