摘要:
A decoding device that decodes demodulated data obtained by demodulating a quadrature modulated signal arising from digital modulation of a carrier and detects synchronization, the decoding device includes, a decoder configured to decode first demodulated data that is the demodulated data obtained by demodulating the quadrature modulated signal and is composed of in-phase axis data and quadrature axis data. The decoding device decodes second demodulated data obtained by interchanging the in-phase axis data and the quadrature axis data of the first demodulated data. A synchronization detector is configured to detect a boundary between predetermined information symbol sequences from first decoded data obtained by decoding the first demodulated data and detect the boundary from second decoded data obtained by decoding the second demodulated data. The synchronization detector selects and outputs one of the first decoded data and the second decoded data based on a result of the detection of the boundary.
摘要:
In a drum in which a drum head installed on one or both of open ends of a trunk main body that constitutes a drum main body of the drum is tightened by lug bolts and stretched by a hoop, reinforcing rings are provided in anchoring holes that are formed in the hoop for receiving bolt heads of the lug bolts.
摘要:
A parallel processing system includes a network and a plurality of nodes which communicates asynchronously between the plurality of nodes through the network. Each of the plurality of nodes may include a plurality of CPUs and a communication control unit. Each of the plurality of CPUs as an issuing CPU generates and transmits an asynchronous communication request, retransmits the asynchronous communication request in response to a non-acceptance reply, and executes a subsequent process in response to an acceptance replay. The communication control unit determines whether the asynchronous communication request is acceptable, returns the acceptance reply to the issuing CPU when the asynchronous communication request is acceptable, and the non-acceptance reply to the issuing CPU when the asynchronous communication request is not acceptable, and executes the asynchronous communication request.
摘要:
A drum tightening frame having bolt attachment openings disposed in a circular plate portion of the tightening frame, the bolt attachment openings being arc-shaped slots closed at both ends, and each of these openings comprising a primary opening section through which the shank (and not the head) of a corresponding tightening bolt is passed and a secondary opening section which communicates with one end of the primary opening section and has a size that allows the head of the tightening bolt to pass through. In addition, when washers are used, the tightening frame, tightening bolts and washers can be formed so as to be magnetically attracted to each other so that the washers can stay with the tightening frame or with the tightening bolts, thus avoiding the washers from being lost when the tightening bolts are removed from the drum body.
摘要:
A drum main body comprising first, second and third drum body elements of cylindrical shape arranged in axial direction thereof. The third drum body element is interposed between the first and second drum body elements and is connected to rims of the first and second drum body elements by fastening bolts. The first, second and third drum body elements that are arranged in an axial direction thereof can be different from each other in materials and/or structure (depth).
摘要:
The bass drum of a drum set provided with drum heads at both ends of the cylindrical shell comprising first and second shell segments which can be split in the axial direction and detachably coupled so that the interior of the bass drum can hold, for instance, drum attachment fixtures, tom-toms, snare drums and so on. The bass drum is provided with auxiliary legs, a handle, a height adjuster leg, and the like attached on the outer surface of the shell.
摘要:
An analytical method capable of easily, rapidly, and accurately determining concentrations of a multi-component aqueous solution. Near-infrared spectra of a standard solution containing k components of known concentrations are measured n times within a range of 1,500 to 1,850 nm. A loading matrix of p columns by m rows and an intermediate matrix of k columns by m rows for an appointed factor number m are obtained from a response matrix of p columns by n rows consisting of p absorbance values of the respective spectra in a calibration stage and p absorbance values of a near-infrared spectrum within a wavelength range of 1,500 to 1,850 nm of a test liquid. The test liquid contains k components including pure water of unknown concentrations. The concentrations of the k components are determined from a group of absorbance values and the loading and intermediate matrices obtained in the calibration stage by a matrix operation in an prediction stage. In the calibration stage, k+1 characteristic contents can be obtained by adding a solution temperature as one of characteristic items, and k concentration values and one temperature value can be obtained in the prediction stage.
摘要:
A laser beam particle-detecting apparatus can automatically detect the position of minute particles on a substrate. A laser beam can be scanned across the substrate, and optical detectors can optically detect the laser beam after incidence with the substrate to define the position of any minute particles. Correction factors characteristic of the laser beam particle-detecting apparatus can be utilized to adjust the coordinates of the particle position, whereby any inaccuracies in the detecting apparatus can be compensated.
摘要:
Novel ferroelectric and antiferroelectric liquid crystal compounds of the invention, which comprise those showing optically tristable states in phase S*.sub.(3), have a wide range of phase transition temperature so as to be not only preferably used solely as display element material but also mixed with any other liquid crystal to desiredly expand the above range wider and make optical response time faster.Typical compounds are represented by ##STR1## in which Z means CF.sub.3, C.sub.2 F.sub.5, CHF.sub.2, CH.sub.2 F, CClF.sub.2, CCl.sub.2 F, CF.sub.3 CCl.sub.2 or C.sub.3 F.sub.7, m' and n' are same or different with each other and each is an integer of 1-20.
摘要:
A new tetrastable liquid crystal is provided which is useful for display and switching devices. The liquid crystal has the formula ##STR1## where R.sub.1 is a C.sub.5-18 alkyl group and R.sub.2 is a C.sub.4-15 alkyl group and * is an optically active center.