Abstract: A correlation detection apparatus which realizes software CDMA inverse-spread processing. A reception circuit receives an RACH preamble from a mobile station, and an A/D converts the preamble into digital received data. An FFT unit FFT-processes the received data to obtain an FFT result. An RACH code storage unit holds an RACH preamble code, and another FFT unit FFT-processes the RACH preamble code to obtain another FFT result. A multiplication unit multiples the FFT result by the other FFT result. An IFFT unit IFFT-processes a result of multiplication input from the multiplication unit to obtain a delay profile. A data decoding unit decodes the received data by using the delay profile, and obtains decoded data.

Abstract: A method for fabricating a semiconductor device, which includes the steps of: removing an abnormal layer formed on a surface of a wiring substrate, the wiring substrate having a first interlayer insulating film formed on a semiconductor substrate, the first interlayer insulating film having a first recess in which a first wiring is formed via a first barrier layer; forming a first antidiffusion film and a second interlayer insulating film sequentially on the resulting substrate; forming a second recess in the second interlayer insulating film and the first antidiffusion film so as to expose the first wiring; forming a second barrier layer on the resulting substrate; forming a second wiring in the second recess, the second wiring being electrically connected to the first wiring; and forming a second antidiffusion film on the resulting substrate.

Abstract: A CDMA mobile station apparatus receives a spread control signal including a non-orthogonal spread signal generated using a non-orthogonal spreading code which is non-orthogonal with a data signal spreading code and a spread data signal produced by spreading a data signal with a data signal spreading code from a base station apparatus via a radio link. The mobile station apparatus has a non-orthogonal spread signal generating unit for generating a non-orthogonal spread signal whose phase rotation caused by a radio transmission path is compensated for using a non-orthogonal spreading code, a subtracting unit for subtracting the generated non-orthogonal spread signal from the received signal to generate a difference signal, and a data signal demodulating unit for demodulating the difference signal into a data signal. The mobile station apparatus is capable of canceling an entire spread broadcasting signal, processing a band-limited signal, or processing a spreading code with a suppression coefficient.

Abstract: A rib is provided in a partition wall of a contact deviation member, so that when movable contact pieces in one contact terminal is apart from each other, the relative position of the movable contact piece in the one contact terminal is restricted to a movable contact piece in another contact terminal adjacent to the former pair.

Abstract: A correlation detection apparatus which realizes software CDMA inverse-spread processing. A reception circuit receives an RACH preamble from a mobile station, and an A/D converts the preamble into digital received data. An FFT unit FFT-processes the received data to obtain an FFT result. An RACH code storage unit holds an RACH preamble code, and another FFT unit FFT-processes the RACH preamble code to obtain another FFT result. A multiplication unit multiples the FFT result by the other FFT result. An IFFT unit IFFT-processes a result of multiplication input from the multiplication unit to obtain a delay profile. A data decoding unit decodes the received data by using the delay profile, and obtains decoded data.

Abstract: A despreading circuit which can reduce a circuit scale and power consumption is described. The circuit includes an A/D converter which converts a CDMA modulated analog signal to a digital signal of N bits, and a searcher which defects a synchronization phase from high-order small bits of the N bits and outputs synchronozation phase information to a control circuit. The control circuit transmits a signal for allowing despreading to be performed to a sliding correlator based on the phase information. The sliding correlator despreads the N bit digital signal outputted by the A/D converter and outputs the resulting correlation output as a despreading signal.

Abstract: A rib is provided in a partition wall of a contact deviation member, so that when movable contact pieces in one contact terminal is apart from each other, the relative position of the movable contact piece in the one contact terminal is restricted to a movable contact piece in another contact terminal adjacent to the former pair.

Abstract: There is disclosed a despreading circuit which can reduce a circuit scale and power consumption. In the despreading circuit of the present invention, A/D converter converts a CDMA modulated analog signal to a digital signal of N bits, a searcher detects a synchronization phase from high-order small bits of the N bits and outputs synchronization phase information to a control circuit, the control circuit transmits a signal for allowing despreading to be performed to a sliding correlator based on the phase information, and the sliding correlator despreads the N bit digital signal outputted by the A/D converter and transmits the resulting correlation output as a demodulated signal to the outside.

Abstract: A despreading circuit which can reduce a circuit scale and power consumption is described. The circuit includes an A/D converter which converts a CDMA modulated analog signal to a digital signal of N bits, and a searcher which detects a synchronization phase from high-order small bits of the N bits and outputs synchronization phase information to a control circuit. The control circuit transmits a signal for allowing despreading to be performed to a sliding correlator based on the phase information. The sliding correlator despreads the N bit digital signal outputted by the A/D converter and outputs the resulting correlation output as a despreading signal.

Abstract: An IC socket includes a moving plate capable of movement along an upper surface of a socket body. Contacts mounted in the socket body and external contact members arranged on an IC can be brought into and out of contact with each other through movement of the moving plate. The moving plate is capable of diagonal movement towards a corner portion along a diagonal line of the socket body.

Abstract: A burst transfer system realizes burst transfer between communication terminals in a communication network of the label multiplex system or the time-division multiplex type. In the burst transfer system, the communication terminal is so designed as to output a communication reservation request which is made up of destination information including the address of the transmitting side communication terminal and the address of the receiving side communication terminal, and band information representing the start time, the use band of the burst transfer, etc.

Abstract: A device is provided for positioning an IC having a plurality of leads arranged in array along side surfaces of an IC body. The IC positioning device in an IC socket comprises a locator for pressing an outer side surface of a lead located on an extreme arraying end of the lead array group. The locator is moved while pressing side surfaces of leads which are displaced in an array direction, so that the lead array group and the IC body are moved to predetermined positions.

Abstract: An IC pressing mechanism in an IC socket comprises a cover mounted in such a way to be able to move upwardly and downwardly with respect to a socket body, an IC pressing lever movable between a pressing position and a releasing position with respect to an IC package in accordance with upward and downward movement of the cover, such that, in the pressing position, the IC pressing lever urges an IC lead against a contact on a socket body, and a transmission lever for linking the cover and the IC pressing lever together. The transmission lever is connected at an upper end side thereof to the cover through a pin and rotatable inwardly and is outwardly about the pin. A lower end side of the transmission lever and an outer end side of the IC pressing lever are connected together through a pin.

Abstract: An IC socket is provided for obtaining a contact pressure between a contact of a socket body and a lead of an IC package placed on the contact by pressing down an IC package body or the IC lead by an IC presser. The IC socket comprises a cover movably mounted on an upper portion of the socket body for upward and downward movement, and a pressing lever. The pressing lever is axially pivotably supported with respect to the socket body, an external end of the pressing lever being linked to the cover so as to be moved upwardly and downwardly in response to the upward and downward movement of the cover.

Abstract: In an ATM switching system responsive to a call setup request from each of B-ISDN terminals, a band for an accepted call is estimated in accordance with fuzzy decision on the basis of the fact that the network traffic characteristics can be determined empirically. Therefore, it is possible to estimate the band without any complicated band estimation calculations, improve the call acceptance processing response speed, and further improve the availability efficiency of the network transmission line. In the consequents of the fuzzy rules in particular, the respective band estimation values are represented by the respective input functions, or particularly by the linear couplings coupled by predetermined linear parameters of respective inputs, thus improving the descriptive capacity of the rules.

Abstract: An IC socket is provided for obtaining a contact pressure between a contact of a socket body and a lead of an IC package placed on the contact by pressing down an IC package body or the IC lead by an IC presser. The IC socket comprises a cover movably mounted on an upper portion of the socket body for upward and downward movement, and a pressing lever. The pressing lever being axially movably supported for inward end outward movement and pivotally supported for upward and downward movement with respect to the socket body. An external end of the pressing lever is linked to the cover such that the pressing lever can move upwardly and downwardly in response to the vertical upward and downward movement of the cover.

Abstract: A contact structure for an IC socket is usable for an IC package having a number of spherical type terminals or a number of cylindrical terminals arranged on the lower surface of an IC main body. To realize this contact structure for an IC socket, a number of contacts arranged corresponding to the spherical type terminals or the cylindrical terminals on the IC main body are provided. Resilient contact pieces for allowing each contact to come into pressure contact with each terminal at one point or at two points on the peripheral surface of the respective terminals are provided. Plural groups are constructed for a group of contacts and a group of terminals for changing an orientation of each resilient contact piece for allowing the group of contacts to give pressure contact force to the group of terminals in three directions or four directions. Each of the plural groups is arranged to generate an opposing force between adjacent groups.

Abstract: A contacting structure with respect to a spherical bump in which the spherical bump is to be contacted with a contact pin, the contact pin includes a contacting portion supported by a resilient support element, and the contacting portion is arranged in opposite relation to that part of a spherical surface of the spherical bump other than a lower-most point thereof. The contacting portion has a projection capable of pressing into the spherical surface of the spherical bump, and also has a pressure receiving surface for setting an amount by which the projection presses into the spherical surface.

Abstract: A structure for electrical connection of an electric part includes a contact probe retained in a through-hole formed in a base member such that the contact probe can be compressed into the through-hole in an axial direction of the through-hole and restored therefrom, and an intermediate contact member turnably supported by the base member through a cantilevered-arm interposed between the contact probe and a contactor of the electric part.

Abstract: A correct admission decision can be made even when not relying upon traffic characteristics declared by a user. With respect to each of established connections, traffic data are acquired and are stored. When a call request is issued, an admission decision is made using the traffic characteristics if the traffic characteristics are stored.