Communication system and communication terminal

摘要

The present communication system has a communication terminal (100) and a communication terminal (200) that are respectively provided with a memory for writing and reading using error correction coding/decoding. The communication terminal (100) transmits data to the communication terminal (200) in a high speed mode or normal mode. In high speed mode, the communication terminal (100) reads coded data written in a first memory (112) and transmits the coded data to the communication terminal (200) without decoding. The receiving-side communication terminal (200) writes the received data in a second memory (212) without coding, and decodes the data when said data is read.

主权项

1. A communication terminal which is a portable electronic terminal device having a first communication mode and a second communication mode, wherein the communication terminal selectively operates in either one of the first communication mode and the second communication mode, and wherein the communication terminal performs peer-to-peer communication with another communication terminal which is also a portable electronic terminal device and which operates in either the first communication mode or the second communication mode in correspondence with the communication terminal, the communication terminal comprising:
a coding unit which codes data to generate coded data; a memory which stores the coded data; a decoding unit which decodes the coded data to generate decoded data in the first communication mode; and a communication unit which transmits the decoded data in the first communication mode and transmits the coded data in the second communication mode, wherein the communication terminal transmits a communication mode confirmation signal for confirming whether or not the other communication terminal can perform communication in the second communication mode before transmitting the data, and when the communication terminal receives a signal from the other communication terminal indicating that communication is possible in the second communication mode, the communication terminal performs communication in the second communication mode, wherein the communication terminal receives the signal from the other communication terminal indicating that communication is possible in the second communication mode, when the communication terminal determines that the coding unit in the communication terminal and another decoding unit in the other communication terminal use a same error correction coding system to perform coding or decoding, and when the communication terminal can select decoding or not decoding by the decoding unit, and when the other communication terminal can select coding or not coding by another coding unit of the other communication terminal.