NETWORK SYSTEM

WIPO Patent Application WO/2005/099207

A1

When a transmitting-end device connected to a network system outputs a bi-phase shift keyed digital signal, a digital signal detecting circuit at a receiving end is complicated. Then, an interface apparatus (4) intervening between the transmitting-end device and a communication path (6) converts the bi-phase shift keyed transmitted data (S) into an amplitude shift keyed transmission signal, and outputs this transmission signal to the communication path (6). In the interface apparatus (4), a modulation scheme converting circuit (12) converts the transmitted data (S) into an NRZ modulated digital signal, and an amplitude modulating circuit (14) modulates, in accordance with the NRZ signal, the amplitude of the carrier to produce the transmission signal. In an interface apparatus (4) at the receiving end, a detecting circuit (22) detects the transmission signal to extract the NRZ modulated digital signal therefrom. A modulation scheme reverse converting circuit (24) converts the NRZ signal into the bi-phase signal, and then outputs the bi-phase signal to the receiving-end device.

NISHIMURA MASAAKI (JP)
SUZUKI HIROHISA (JP)

PCT/JP2005/002639

October 20, 2005

February 18, 2005

Click for automatic bibliography generation  

SANYO ELECTRIC CO (JP)
NISHIMURA MASAAKI (JP)
SUZUKI HIROHISA (JP)

H04B17/40; H03M5/12; H04L25/49; H04L27/02; H04L27/18; (IPC1-7): H04L27/02

JP2004040211A	2004-02-05
JPS60145745A	1985-08-01

OKI S. ET AL.: "Johokei Shasai Network Protocol [MOST]", DESIGN WAVE MAGAZINE, December 2002 (2002-12-01), pages 40 - 46, XP002996537
See also references of EP 1732280A4

HARUKA PATENT & TRADEMARK ATTORNEYS (1-11 Shinjuku 2-chome, Shinjuku-k, Tokyo 22, JP)

View/Download PDF      PDF Help

Previous Patent: METHOD AND DEVICE FOR GENERATING A CODE DURING TRANSMISSION OF DATA VIA A COMMUNICATION SYSTEM

Next Patent: DUAL CARRIER MODULATOR FOR A MULTIBAND OFDM TRANSCEIVER