Sony Corporation

Yasuhiko Mizoguchi

Hideki Iwami

Shigeru Sugaya

Jun Iwasaki

Natsuki Itaya

Satoshi Konya

Satoshi Futenma

Kenichi Urayama

There is provided a transmitting apparatus for transmitting data, which includes: compressing means compressing data to be transmitted; packetizing means packetizing the data compressed by the compressing means; a buffer for accumulating the data which are packetized; transmitting means transmitting the data accumulated in the buffer; clearing means clearing the buffer at each time that a predetermined time is lapsed; number-of-data counting means counting the number of the data which are not transmitted within the predetermined time; time measuring means measuring a transmission idle time which lasts from a transmission completion time to a clearing time, in a case where all of the data accumulated in the buffer are transmitted before the predetermined time is lapsed; and compression controlling means controlling a compression rate of the data, depending on the number of the data counted or the transmission idle time measured.

Transmitting apparatus, transmitting method, program, and communications system

A wireless communication apparatus is provided in which a frequency band, a signal type, and a transmission power conforming to radio law of a country that uses a first wireless communication system are set by means of a receiving status of a specific signal of a second wireless communication system, so that user friendly wireless communication apparatus regarding operations thereof can be provided. In the wireless communication systemaccording to the present invention, an area information acquisition portionacquires information on an area in which the wireless communication system presently exists. Based on communication setting information in the wireless communication system corresponding to area information stored in an information memory portion, an area information judgment portionjudges communication setting information capable of being set in the wireless communication system in accordance with the area information acquired from the area information acquisition portion. Based on the communication setting information judged by the area information judgment portion, communication parameter control setting portioncontrols communication settings of the wireless communication system.

Wireless communication system, wireless communication apparatus, and wireless communication method

A radio station and a data packet transmitting/receiving method for carrying out transmitting/receiving operations of data by radio. An identification packet generating section generates an identification packet having a data format in which a broadcast address is caused to be a destination address and a media access control address of a corresponding data station is caused to be a source address to send out a packet to a wireless network and to detect a loop to hold normal a communication state.

Radio station and data packet transmitting/receiving method

Growing community of inventors

Tokyo, Japan

Yasuhiko Mizoguchi