Abstract: A rotating parity redundant array of independent disk (RAID) and a method for storing parity of the same are provided. The rotating parity RAID comprises a first˜a third disk. The first disk has A1˜Am blocks for storing A1˜Am data respectively. The second disk has B1˜Bm blocks for storing B1˜Bm data respectively. The third disk has C1˜Cm blocks for storing C1˜Cm data respectively. The Cn+k data is an nth parity data obtained from the An data and the Bn data. The Bn+k+1 data is an (n+1)th parity data obtained from the Cn+1 data and the An+1 data. The An+k+2 data is an (n+2)th parity data obtained from the Bn+2 data and the Cn+2 data.

Abstract: A VoIP system has plural CPE units connected to an IP network as parties to be connected with each other. Each CPE unit is composed of a VoIP-IF circuit and an audio codec circuit. The VoIP-IF circuit executes at least one of the coding process to the first audio frequency signal and the restoration process to the media information to transmit the media information generated by the process to the party connected and restore the first audio frequency signal from the media information supplied from the party connected to output it. The audio codec circuit performs at least one of the sending of the received music data to the party and the conversion of the music data supplied from the party into the second audio frequency signal.

Abstract: Provided is a high-isolation switching device for a millimeter-wave band control circuit. By optimizing a cell structure to improve the isolation of an off-state without deteriorating the insertion loss of an on-state, it is possible to implement a high-isolation switching device useful in the design and manufacture of a millimeter-wave band control circuit such as a phase shifter or digital attenuator using switching characteristics. In addition, when a switch microwave monolithic integrated circuit (MMIC) is designed to use the switching device, it is not necessary to use a multi-stage shunt field effect transistor (FET) to improve isolation, nor to dispose an additional ?/4 transformer transmission line, inductor or capacitor near the switching device. Thus, chip size can be reduced, degree of integration can be enhanced, and manufacturing yield can be increased. Consequently, it is possible to reduce manufacturing cost.

Abstract: A steel bar for a steering rack that contains 0.50 to 0.60% by mass of C, 0.05 to 0.5% by mass of Si, 0.2 to 1.5% by mass of Mn, 0.0005 to 0.003% by mass of B, 0.005 to 0.05% by mass of Ti, 0.0005 to 0.1% by mass of Al, and 0.002 to 0.02% by mass of N is provided. Given D as a diameter of the steel bar, then the steel bar is adjusted in such a manner that quenched and tempered structures in a portion of the steel bar at a depth of D/4 from a surface satisfy conditions I), II), and III) as follows: I) a sum of a tempered bainitic structure and a tempered martensitic structure accounts for 30 to 100% in area percentage; II) a regenerated perlite structure accounts for 0 to 50% in area percentage; and III) a sum of the tempered bainitic structure, the tempered martensitic structure, and the regenerated perlite structure accounts for 50 to 100% in area percentage.

Abstract: Provided is a method for mobile sensor node roaming in an environment of first and second adjacent wireless sensor networks having a plurality of sensor nodes. The method includes the steps of: periodically performing energy detection scan and active scan operations, at the mobile sensor node forming an association with a parent node of the first wireless network, and obtaining energy values of selected channels and link quality indications (LQIs) for the channels; when the sensor node moves to the second wireless sensor network, periodically performing energy detection scan and active scan operations, at the sensor node, and obtaining energy values of selected channels and link quality indications (LQIs) for the channels after movement; comparing, at the sensor node, the energy values and link quality indications (LQIs) of the selected channels before and after movement.

Abstract: An electrophotographic photoconductor in which generation of a ghost phenomenon caused by exposure is avoided and potential change before and after continuous printings is insignificant. A functionally separated type electrophotographic photoconductor includes at least a charge generation layer containing a charge generation agent and a charge transport layer containing a charge transport agent, the two layers being sequentially laminated on a conductive substrate. A ratio of the maximum intensity of a halo pattern to a peak intensity of a maximum diffraction peak is less than 0.3 in an X-ray diffraction pattern obtained by a powder method using Cu K? line of a test coating film produced from a test coating liquid that is prepared by adding the charge transport agent into a coating liquid for the charge generation layer in an equal mass of the charge transport agent to a mass of the charge generation agent.

Abstract: A semiconductor device having a semiconductor chip and protective resin covering a sidewall of the semiconductor chip and having a surface formed so as to be flush with an inactive surface of the semiconductor chip. The semiconductor chip may be joined to a wiring board or another semiconductor chip. The semiconductor device may further include an external connecting terminal having an exposed portion exposed to the outside of the protective resin.