Yamaha Corporation

Toshiyuki Sugawara

Hirokazu Suzuki

Tomohiro Shinkawa

Shun Iwamoto

A wireless transmitting device includes a receiving circuit configured to receive a reception frame from another device, and a transmitting circuit configured to transmit a broadcast transmission frame while the receiving circuit is not receiving the reception frame, and controls the transmitting circuit to delay transmission of the broadcast transmission frame for a waiting period that starts from an end of reception of the reception frame according to a frame type of the transmission frame, including a broadcast frame, a unicast frame, and a reception acknowledgement response frame, wherein the waiting period for the broadcast frame is shorter than the waiting period for the unicast frame and longer than the waiting period for the reception acknowledgement response frame.

Wireless transmitting device and wireless transmitting method

A wireless transmitting system acquires transmission data, sequentially transmits, by broadcast, a plurality of frames contained in the acquired transmission data, that are modulated by any of a plurality of modulation and coding schemes (MCSs) including a first MCS and a second MCS, and controls to transmit a first frame that is modulated by the first MCS based on the acquired transmission data and then to transmit a second frame that is modulated by the second MCS based on the acquired transmission data.

Wireless transmitting device, wireless receiving device, and wireless transmitting method

A signal transmission device includes a first antenna, a second antenna, a demodulation device, and a fixing member. The first antenna transmits radio waves containing a signal modulated at a first frequency. The second antenna receives the radio waves containing the signal via a medium. The demodulation device demodulates the signal and connected to the second antenna. The fixing member fixes the first antenna and the second antenna to the medium.

Growing community of inventors

Kakegawa, Japan

Toshiyuki Sugawara