Abstract:
PROBLEM TO BE SOLVED: To provide a lighting fixture capable of attaining compact size of the lighting fixture and reducing the number of components.SOLUTION: A pasting means 31 for directly installing a filter 30 exchangeably is provided at an opening 21 in order to install the filter 30 at the opening 21 of a fixture body 20 which houses a light source. Thereby, it is not necessary to use a filter holder as a conventional one, and the number of components is reduced, while the installation space becomes small to attain a compact size.
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting fixture capable of using a filter as well as reducing its size.SOLUTION: The lighting fixture is provided with a filter attachment frame 12 fitted on a front surface of fixture body 11, and a spring member 14 as a holding member for holding the filter 13 to the filter attachment frame 12 in free detachment. The spring member 14 elastically presses the filter 13 to the filter attachment frame 12. Moreover, the spring member 14 includes a positioning part for positioning the filter 13 at a given position. Since the lighting fixture 10 can hold the filter 13 without using a filter holder, it can be downsized.
Abstract:
PROBLEM TO BE SOLVED: To provide a new transmission coding in addition to a conventional transmission coding in a higher hierarchy. SOLUTION: In a transmission method of an OFDM signal, in which a frame contains an integer number of transport stream packets and uses a frame structure containing the predetermined number of symbols in a frame, the frame is time-divided into slots of each symbol of the predetermined number, a specified service is transmitted using at least one of the time-divided slots, the transmission coding is performed on each of the specified services, and before and behind a border of a slot transmitting different services, at least null packets of 12 packets or at least PID packets of 12 packets that are not involved in the service are transmitted respectively. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To detect and remove disturbances of frequency selectivity existing in a reception signal, and to reduce the capacity of a memory necessary for the detection and the removal. SOLUTION: A demodulating part 3 includes a memory part 33 for interpolating transmission path characteristics in the time axis direction. A disturbance detecting part 4 calculates an error signal, by using the transmission path signal of a pilot signal stored in the memory part 33, and detects the disturbance of frequency selectivity, on the basis of the error signal. An error-correcting part 5 performs error correction, by weighting an information signal demodulated by the demodulating part 3, on the basis of the disturbance detection result. Thus, the memory part 33 is shared with the demodulating part 3 and with the disturbance detecting part 4, and the total usage amount of the memory is restrained. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting fixture capable of improving efficiency of heat radiation by heat radiation fins and lightening the weight.SOLUTION: In the lighting fixture, heat generated by an LED light source 24 is radiated with a heat sink section 30 arranged on a back face side of the LED light source 24. The plurality of heat radiation fins 31 forming the heat sink section 30 are stacked at a designated interval, and the heat radiation fis 31 is cooled with air flowing between respective heat radiation fins 31. As for the stacked heat radiation fins 31, the height dimension HA2 of the heat radiation fin 31B arranged in the center section in a stacked direction is set to be small, and the height dimension HA1 of the heat radiation fins 31A arranged on both end sections in the stacked direction is set to be large. A line for connecting tops 311 of the respective heat radiation fins 31 is set to be a valley shape when viewed in a direction along faces of the heat radiation fins 31. Thus, heat radiation efficiency of the heat radiation fins 31 can be improved since air can flow between the heat radiation fins 31, and lightening of the lighting fixture can be attained.
Abstract:
PROBLEM TO BE SOLVED: To provide conventional transmission line encoding and new transmission line encoding for a high-rise building. SOLUTION: A transmission method of an OFDM signal uses a frame structure including the prescribed number of symbols in a frame which includes integer pieces of transport stream packets. The method time-divides the frame into slots of each symbol of the prescribed number, transmits a specific service using at least one of the time-divided slots, applies transmission line encoding to each specific service, and transmits at least 12 null packets or at least a PID packet of 12 packets not to be involved in the service at each backward and forward of a border of the slots that transmit different services. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a radio receiver capable of listening to radio broadcasting without uncomfortable acoustic feeling even when a PTY code is impossible to obtain, a reception state becomes worse or when the PTY code is impossible to receive although switched to an another broadcast content under a state where an acoustic field control set value corresponding to the PTY code is automatically set.SOLUTION: A microcomputer 111 brings a PTY code, a surround mode, and a control content corresponding to a received quality value Q of a broadcast into correspondence with each other, stores them, and transmits the information and the quality value Q to DSP106. The DSP106 changes an acoustic field setting according to an acoustic field control signal received from the microcomputer 111.
Abstract:
PROBLEM TO BE SOLVED: To provide a device for improving an existing rotation/scaling Alamouti encoding for a system having two transmission antennas. SOLUTION: It is possible to cope with both of single modulation and hybrid modulation. An encoder for forming a set of channel symbols having redundancy by responding to an input symbol handles a symbol to be input by a block comprising two symbols, and encodes an input block comprising symbols s 1 , s 2 to a sequence comprising symbols s 1 exp (jϕ) and -s 2 * and a sequence comprising symbols M 2 (s 2 ), M 1 (s 1 ), thus providing a transmitter having the encoder for creating four channel symbols for each block comprising two symbols. First and second mapping functions M 1 (*), M 2 (*) may differ since the symbols s 1 , s 2 may have different constellations because of hybrid modulation. COPYRIGHT: (C)2009,JPO&INPIT