摘要:
A CDMA receiving apparatus which can perform coherent detection in multi-code transmission with high accuracy by using a pilot signal, and can be easily produced. The apparatus demodulates data multi-code-transmitted through a plurality of channels, wherein in each of the systems for demodulating reception signals of the respective channels, there are provided spread code generating units for generating spread codes allocated to the channels, spread code generating units for generating spread codes in which a pilot signal is spread, and despreading units for despreading the reception signal on the basis of the spread codes generated by those spread code generating means, so that the transmission condition of the line is estimated on the basis of the pilot signal extracted by despreading and coherent detection of the reception signals of the respective channels is corrected on the basis of the result of the estimation. Because the transmission condition of the line can be estimated by the respective systems, information of the transmission condition need not be distributed to the respective systems.
摘要:
Received signal 201 is input to one frame memory 202 and initial weight calculating section 203. One frame memory section 202 delays one frame of received signal 201 to input to floating point ACS processing section 204. On the other hand, initial weight calculating section 203 integrates an amplitude of the received signal, i.e., the absolute value of received signal level 201 over one frame, and inputs the resultant to floating point ACS section 204. Floating point ACS processing section 204 performs the ACS processing using the output from initial weight calculating section 203 as an initial weight, and inputs the path select result to trace back processing section 205. Trace back processing section 205 reproduces the state transition of the coder based on the input from Floating point ACS processing section 204 to output decoded information sequence.
摘要:
A disc carrier is provided for carrying a disc between a magazine and a disc player. The disc carrier has a rotating device and a chuck member provided on the rotating device. A direction of the chuck member can be changed to the magazine or the disc player.
摘要:
An integrated circuit device comprising a wiring substrate on one surface of which integrated circuit chips are mounted, a power source substrate of a laminated structure provided in contact with the other surface of the wiring substrate and formed by alternately laminating a plurality of feeding conductor layers of a heat conductive metal and a plurality of electrically insulating layers of an electrically insulating material, and bonding together the laminated layers, a means for electrically connecting the wiring substrate and the power source substrate to each other, and a heat radiating means inserted in at least either the feeding conductor layers or the electrically insulating layers and adapted to radiate the heat, which occurs in the power source substrate, to the outside thereof. This integrated circuit device has a power source substrate of a remarkably high heat radiating efficiency, and is suitably used as an integrated circuit device having integrated circuit chips mounted with a high density on a wiring substrate therein.
摘要:
A slip ring cooling device for electrical rotary machine comprises a plurality of closed chambers axially extending in the peripheral portion with intervals therebetween in the peripheral direction, and an annular passage at one side. The closed chambers each are defined by the surfaces of holes made in the slip ring so as to axially extend at the peripheral portion of the slip ring. The axially extended holes have open ends and closed ends. The annular passage is fluidly connected to each of said open ends so that said closed chambers communicate with said annular passage. A volatile liquid poured in said passage is distributed uniformly to each of said closed chambers by centrifugal force applied thereon upon the rotation of the slip ring. The distributed liquid is evaporated by the slip ring and brushes contacting the slip ring to form vapor. The vapor is transferred to the lower temperature portion by the pressure difference to be cooled and condensed, whereby the slip ring is cooled.
摘要:
A rotary electric machine comprises a rotor axially shorter than the lamination thickness of the stator core and having a coil retaining ring at each end of the coil thereof. The rotary electric machine further comprises a magnetic transmission device between each of the adjacent teeth of the stator core opposed to the coil retaining ring.
摘要:
A stator for an electric rotary machine adopting a so called gap winding system in which the stator winding is arranged on the smooth inner surface of the stator core. The winding strand groups arranged on the inner surface of the annular stator core are fixedly secured to cooling pipes formed in a cylindrical frame, so that the cooling pipes support the winding strand groups thereby to facilitate transportation and assemblage of the stator winding on the one hand and to provide a sufficiently rugged stator winding to withstand the mechanical stress due to vibrations or electrical short-circuiting which are caused during the running of the electric rotary machine.
摘要:
Provided is an X-ray imaging apparatus and an X-ray imaging method that offer an alternative for a refraction contrast method.A first scintillator and a second scintillator are used, the first scintillator generating first fluorescent light when X-rays separated by the separating element are incident thereon, and a second scintillator generating second fluorescent light when X-rays separated by the separating element are incident thereon. The second scintillator has a fluorescence emission intensity gradient such that an amount of emitted fluorescent light changes in accordance with a change in a position at which the X-rays are incident.
摘要:
An eco drive support apparatus which reports the eco degree of the driving operation of a vehicle by displaying a state relative to a judgment threshold which varies corresponding to the drive state of the vehicle. The apparatus has a power train ECU which computes the judgment threshold and an eco drive state amount expressing a ratio to the judgment threshold on the basis of the drive state of the vehicle and a meter ECU which indicates the eco drive state amount on the basis of information transmitted from the power train ECU. The power train ECU transmits the eco drive state amount to the meter ECU.
摘要:
An X-ray detector includes an X-ray photoelectric conversion layer configured to produce electric charges in proportion to X-ray irradiation incident on the layer, a collecting electrode configured to collect the electric charges produced by the X-ray photoelectric conversion layer, a common electrode disposed on a surface of the X-ray photoelectric conversion layer opposite to the collecting electrode, a storage capacitor configured to store the electric charges collected by the collecting electrode, and a readout unit configured to read out the electric charges stored in the storage capacitor. A voltage is to be applied between the collecting electrode and the common electrode. The X-ray photoelectric conversion layer is formed of a polycrystalline oxide.