Yamaha Corporation

Yuki Suemitsu

Akihiko Suyama

Tomoyoshi Akutagawa

Katsuaki Tanaka

Masakazu Shirai

Kazuya Mushikabe

Keisuke Tsukada

Hiroyuki Ichi

Fukutaro Okuyama

Osamu Kohara

Masafumi Toshitani

Hisashi Iida

Takeyoshi Aihara

Futoshi Muronaga

Kazuhiro Iwashita

A content distribution device sends control data or content data to a first content receiving device over a wireless communication channel in a first frequency band. The device also sends the content data to a second content receiving device via a wired communication channel or via a wireless communication channel in a second frequency band that is different from the first frequency band. The device detects a performance reduction of the wired communication channel or the wireless communication channel in the second frequency band. In response to the detection, the device starts to send the content data to the second content receiving device via the wireless communication channel in the first frequency band while sending of the control data or the content data to the first content receiving device.

Content distribution device and content distribution method

A synchronization setting device and a system include at least one memory storing instructions, and at least one processor that implements the stored instructions to acquire first delay time to be set in a first distribution device for distributing first content data, and output the first delay time to the first distribution device or to a reproduction device that provides the first content data to the first distribution device.

Synchronization setting device and distribution system

A list screen of a plurality of reproduction devices is displayed on a display unit based on relationship information between the plurality of reproduction devices which is connected via network. Selection of a reproduction device which is made to perform a content reproduction operation among the plurality of reproduction devices is received. A command is transmitted to the selected reproduction device.

Audio system control method, control terminal device, and information storage medium

A communication system includes a control terminal device and one or more communication devices. The control terminal device transmits a search message to entire network when the communication device is registered into the communication system. When the communication device is connected to the network, the communication device determines whether a connection position of the connected communication device on the network is the predetermined connection position. When the communication device is not positioned at the predetermined connection position, the communication device cancels the connection with the network and then connects to the predetermined connection position of the network and responds to the search message through the network after the communication device directly connects to the control terminal device and obtains information for connecting to the predetermined connection position of the network.

Communication system, communication device, and communication device management method

An audio device, which is configured to receive audio data from anther device, comprises a memory that stores instructions and a processor. The processor is configured to execute the instructions stored in the memory to: receive the audio data and a time stamp attached to the audio data, output a pulse data having a predetermined length, detect end time of the pulse data, compare the end time of the pulse data and the time stamp, adjust the audio data based on the comparing result, and output the adjusted audio data.

Audio device which synchronizes audio data

Provided is an audio system, including: at least two audio devices capable of holding communication among one another; and a stereo pair setting unit configured to set a stereo pair in which one of two audio devices included among the at least two audio devices serves as a parent device, and another of the two audio devices serves as a child device, in which: the parent device is configured to play, with a delay, a first-channel audio signal included in a first audio signal, and to transmit to the child device a second audio signal including at least a second-channel audio signal, which is included in the first audio signal; and the child device is configured to receive the second audio signal from the parent device to play the second-channel audio signal.

Audio system, audio device, and audio device setting method

In a case where a sound of one channel of an audio signal which is reproduced and emitted by a second audio device is emitted from a first audio device, an audio device receives a signal of other channel of the audio signal from the second audio device and causes a sound emission unit to emit a sound of the other channel.

Control method, audio device, and information storage medium

A communication system includes communication devices configured to be connected to one another through a network. A root device which is one of the communication devices stores system information including address information and information on availability of communication of the communication devices. The root device is configured to transmit the system information periodically. Each of the communication devices is configured to send an acknowledgement message to the root device when receiving the system information. When an acknowledgement message from one of the communication devices has not been received by the root device, the root device is configured to rewrite the information on availability of communication of the communication device from which the acknowledgement message has not been received by the root device, as incommunicable, and to update the system information accordingly.

Communication system, communication device, and management method for communication system

An audio system includes a first audio apparatus that receives a first audio signal with a first number of channels and a second audio apparatus connected to the first audio apparatus via a network. The first audio apparatus includes a signal processing unit configured to generate, on the basis of the first audio signal received from the outside of the first audio apparatus, a second audio signal with a second number of channels larger than the first number of channels, and a communication unit configured to transmit a third audio signal corresponding to a part of the channels in the second audio signal generated by the signal processing unit to the second audio apparatus.

Audio system, audio apparatus, and control method for audio apparatus

A communication system includes a plurality of communication devices constituting a network. Each of the communication devices includes a first wireless communication circuit and a second wireless communication circuit. The second wireless communication circuit of a lower-level communication device accesses the first wireless communication circuit of a higher-level communication device, whereby the higher-level communication device and the lower-level communication device are connected so as to constitute the network. Each of the plurality of communication devices stores system information. When any one of the communication devices is disconnected from the higher-level communication device, the disconnected communication device searches for another communication device using the system information and makes reconnection to the communication device detected by the search.

Communication system, communication device, and method for reconnecting communication system

A method for synchronizing a pause process during playback compress: delivering a pause release instruction, and a first period for which a first audio device is paused, simultaneously, the steps being performed by the first audio device. The method also comprises (i) receiving the pause release instruction, and the first period, and (ii) adjusting a playback of the audio data based on a difference between the first period and a second period for which a second audio device is paused, the steps being performed by the second audio device.

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Hamamatsu, Japan

Yuki Suemitsu