Panasonic

About: Panasonic is a company organization based out in Kadoma, Ôsaka, Japan. It is known for research contribution in the topics: Signal & Layer (electronics). The organization has 49129 authors who have published 71118 publications receiving 942756 citations. The organization is also known as: Panasonikku Kabushiki-gaisha & Panasonic.

HARQ protocol with synchronous retransmissions

Abstract: The present invention relates to a hybrid automatic repeat request (HARQ) method for transmitting data packets from a transmitting entity to a receiving entity via a data channel. Further, the present invention is related to mobile stations, base stations, radio network controllers and communication systems performing in the HARQ method. To overcome problems resulting from asynchronous retransmissions, the present invention provides a HARQ method sending retransmissions synchronous. According to the method, a feedback message is received from the receiving entity at the transmitting entity and, in case the feedback message indicates that the data packet has not been received successfully, a retransmission data packet is transmitted to the receiving entity after a predetermined time span upon having received said feedback message. The receiving entity soft combines the retransmission data packet with the previously received data packet.

Method of manufacturing nitride semiconductor substrate

Abstract: A mask film of a material on which substantially no nitride semiconductor grows and having a plurality of openings in a stripe shape is formed on a main surface of a base substrate. Then, on the base substrate, a semiconductor layer of nitride is selectively grown through the mask film. Then, a laser beam is irradiated upon the interface between the semiconductor layer and the base substrate to separate the semiconductor layer from the base substrate, so that a nitride semiconductor substrate is formed from the semiconductor layer.

Semiconductor light-emitting device, lighting module, lighting device and method for manufacturing semiconductor light-emitting device

Abstract: A semiconductor light-emitting device (1) includes: a semiconductor multilayer film (12), a substrate (13) supporting the semiconductor multilayer film; and a phosphor layer (11) formed on the substrate so as to cover the semiconductor multilayer film. The phosphor layer has an outer edge of a cross section taken in a direction parallel to the principal surface (13a) of the substrate having a substantially circular shape or a substantially regular polygonal shape having five or more sides. An outer edge of the principal surface of the substrate is formed in a substantially circular shape or a substantially regular polygonal shape having five or more sides. With this configuration, light obtained therefrom has less non-uniformity in color and a high luminous flux can be realized.

Piezoelectric ultrasonic transducers having acoustic impedance-matching layers

Abstract: Ultrasonic transducers comprising an ultrasonic transducer element, a pair of electrodes provided on opposite sides of the element, and an acoustic impedance-matching layer formed on an ultrasonic wave-radiating surface of the element through one electrode. The acoustic impedance-matching layer is made of a porous polymer film or a composite material comprising thermally expanded resin microspheres dispersed in a cured product of thermosetting resin and has an acoustic impedance not larger than 0.6×10 6 Ns/m 3 . Two-layer constructions may also be used as the acoustic impedance-matching layer.

Physically reconfigurable input and output systems and methods

Abstract: Systems and methods for altering the shape of a reconfigurable surface area are presented. The present systems and methods facilitate efficient and effective interaction with a device or system. In one embodiment, a surface reconfiguration system includes a flexible surface; an elevation unit that creates alterations in the contours of the surface; and an elevation control component that controls adjustments to the elevation unit. Thus, the surface of the device is reconfigurable based on system, application, mode, and/or user needs. Accordingly, the surface can be used to provide input and output functionality. The surface can include touch detection functionality for added input functionality.