Panasonic Corporation

Panasonic Avionics Corporation

Panasonic Intellectual Property Management Co., Ltd.

Kenshi Taniguchi

Philip S Watson

Masaaki Higashida

Randall Schwarz

Toshihiro Ezaki

Seiji Horita

Masatoshi Tanaka

Tadayuki Inoue

Yasuaki Sakanishi

Yusuke Kushiki

Shotaro Tanaka

A wireless communication system performs high-quality communication using Multicast communication where re-transmission processing is performed. The wireless communication system includes a program distribution unit for distributing a program using the Multicast communication; a first communication path for transmitting the program distributed from the program distribution unit; first communication units; user terminals; and a second and the user terminal and is also a wireless communication path where the re-transmission of a frame is performed, wherein the first communication unit selects a Multicast frame of a program requested by the user terminal from the first communication path, converts the selected Multicast frame into a Unicast frame, and transmits the converted Unicast frame to the user terminal.

Communication system and method for distributing content

A packetized transport stream for protecting viewing content from unauthorized access and methods for manufacturing and using same. The transport stream includes a plurality of content frames, each having a frame header and a frame payload. Each frame header includes information for handling the content frame; whereas, the frame payload includes selected viewing content for which protection from unauthorized access is desirable. By encrypting only the frame payload, the header remains unencrypted and can be applied to prepare the encrypted frame payload for presentation. The viewing content thereby can be stored in an encrypted format and can be decrypted on-the-fly as the viewing content is needed for presentation. The combination of the unencrypted frame header and the encrypted frame payload advantageously enables the viewing content to be protected against unauthorized use, copying, and dissemination without impairing the presentation of the viewing content.

System and method for providing searchable data transport stream encryption

A network system includes a transmitting apparatus; a transmission path; a relaying apparatus that receives real time information transmitted through the transmission path; a wireless network; and a receiving apparatus that receives data transmitted through the wireless network. The relaying apparatus has a reference time generating part that generates a reference time independently of the transmitting apparatus; and a network transmitting part that transmits both the real time information received from the transmitting apparatus and the reference time via the wireless network. The receiving apparatus has a network receiving part that receives the real time information and reference time transmitted through the wireless network; an internal time management part that generates an internal time from the reference time received by the wireless network receiving part; and a real time information processing part that decodes the real time information received by the wireless network receiving part to reproduce the content data and that then outputs the content data, based on the internal time generated by the internal time management part. This network system allows the receiving apparatus to synchronize and output video and audio, regardless of singularity or plurality of the receiving apparatus.

Transmitter device, bridge device, and receiver device, and network system including the devices

A personal computer () includes a control signal output unit () that outputs, to a display device (), a control signal for switching between a TV format video signal and a computer format video signal while the display device () includes an input switching unit () operable to perform, based on the control signal outputted from the personal computer (), input switching, for display, between the TV format video signal and the computer format video signal.

Computer display system, computer apparatus and display apparatus

Growing community of inventors

Osaka, Japan

Kenshi Taniguchi