Panasonic Intellectual Property Management Co., Ltd.

Sanyo Electric Co., Ltd.

Kazuaki Okamoto

Yasuo Okuda

Yousuke Ohtsuki

Yuuki Hirata

Hideo Hirono

A rechargeable battery system includes: a first battery pack; and a second battery pack in a daisy chain connection with the first battery pack to form a communication path, the second battery pack consuming a larger power for communication than a power consumed in the first battery pack for communication. A power consumed in the second battery pack for an additional process other than communication is smaller than power consumed in the first battery pack for the additional process.

Rechargeable battery system and method of controlling power consumption

A rechargeable battery management unit (controller) controls a plurality of battery packs. A communication path connects the rechargeable battery management unit and the plurality of battery packs in a daisy chain for packet communication and representing a ring topology. The rechargeable battery management unit sends a fixed-length packet divided into segments so as to flow in one direction on the management data communication path, the number of segments being equal to or more than the number of battery packs. Each of the plurality of battery packs stores data related to the battery pack in a segment assigned to the battery pack in the fixed-length packet received from a battery pack preceding in the management data communication path and sends the fixed-length packet to a succeeding battery pack.

Rechargeable battery system including controller and battery backs in daisy chain communication path

To avoid occurrence of communication conflict at the transmission time of re-transmission data without losing real-time performance of data transmission with respect to data missing during communication, thereby enabling excellent data transmission a reception controller allocates time slots for transmission of second data (re-transmission) transmitted from transmitters on the basis of a re-transmission request message according to a reception condition of first data (latest data) and the reception controller transmits an acknowledgement message (ACK) for the first data with a slot time being embedded in an acknowledgement message for every reception-success transmitter.

Receiver, communication system and in-store equipment monitoring system

A technology for efficiently processing data communication using a plurality of communications protocols is provided. In the Internet phone apparatus, when a network interface section receives packets, a protocol detecting section determines whether the received packets are TCP packets or UDP packets. In the case TCP packets, a CPU, a general-purpose circuit, processes the packets using software. In the case of UDP packets, a UDP processing section, a dedicated circuit, processes the packets. Audio data transmitted and received in UDP packets are decoded by a codec processing section and output to a speaker.

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Moriguchi, Japan

Kazuaki Okamoto