Mitsubishi Gas Chemical Company, Inc.

Nec Corporation

Masayoshi Ueno

Hiroshi Takahashi

Yoshihiro Kato

Daisuke Ohno

Takaaki Ogashiwa

Takeshi Nobukuni

Masanobu Sogame

Masayuki Katagiri

Yuuichi Sugano

Seiji Kita

Tetsuro Miyahira

Hironao Fukuoka

A manufacturing method of a nitrile compound comprising a first step of introducing a raw material gas containing a cyclic compound having an organic substituent, ammonia, and air into a reactor and reacting the raw material gas in the presence of a catalyst to generate the nitrile compound, a second step of discharging a reacted gas from the reactor and separating the nitrile compound from the reacted gas, and a third step of collecting mist from a first residual gas obtained by separating the nitrile compound from the reacted gas to remove water and ammonium carbonate in the first residual gas.

Manufacturing method of nitrile compound

This invention relates to a prepreg having a low thermal expansion coefficient in plane direction and a high rigidity, and more particularly to a prepreg comprising a glass cloth (A), and a resin composition including a cyanate ester resin (B), a non-halogen based epoxy resin (C) and an inorganic filler (D), wherein the glass cloth (A) is characterized that when the weight per 1 mis W (g/m), the thickness is t (&#x3bc;m), the number of warp threads per inch is X (thread/inch), and the number of weft threads per inch is Y (thread/inch), the total of X and Y is 150 to 240, t is 17 to 35, and the value of W/t as the apparent density is 1.1 to 1.5, and that the volume fraction of the glass cloth (A) in the prepreg is 32% to 42%.

Prepreg and laminate

This invention relates to a method for storing a naphthol aralkyl type cyanate ester resin solution, which is difficult to precipitate due to long term storage in a solution state, and particularly relates to a method for storing a naphthol aralkyl type cyanate ester resin solution (AB), which comprises: preparing (i) a naphthol aralkyl type cyanate ester resin solution (AB) comprising a naphthol aralkyl type cyanate ester resin (A), a maleimide compound (B) and a solvent, (ii) a naphthol aralkyl type cyanate ester resin solution (AB) comprising a prepolymer of a naphthol aralkyl type cyanate ester resin (A), a maleimide compound (B) and a solvent, or (iii) a naphthol aralkyl type cyanate ester resin solution (AB) comprising a prepolymer of a naphthol aralkyl type cyanate ester resin (A) and a maleimide compound (B), and a solvent, and; storing the resin solution (AB).

Method for storing resin solution, and method for producing prepreg and laminate

A prepreg for a printed wiring board, comprising a cyanate ester resin having a specific structure, a non-halogen epoxy resin, a silicone rubber powder as a rubber elasticity powder, an inorganic filler and a base material, which prepreg retains heat resistance owing to a stiff resin skeleton structure, has high-degree flame retardancy without the use of a halogen compound or a phosphorus compound as a flame retardant, and has a small thermal expansion coefficient in plane direction without using a large amount of inorganic filler, and a laminate comprising the above prepreg.

A CDMA receiving device is provided which can prevent erroneous determination of an SFN detection. The CDMA receiving device () performs detection of a slot boundary in a slot timing detection unit (), and performs detection of frame timing and code group in a code group identification unit (), with regard to each slot timing detected in this way. The CDMA receiving device () uses a P-CPICH to detect scrambling code in a scrambling code identification unit () from the detected frame timing and code group. The CDMA receiving device () performs detection of SFN in a broadcast channel decoding unit () from the frame timing and the scrambling code. A P-CCPCH is used in the detection of the SFN. The SFN is included in the P-CCPCH and it is possible to detect SFN timing of a base station by decoding a BCH.

CDMA receiving device and SFN detecting method used for the same

Upon receiving an instruction to open a radio link, a path management unit designates, for one radio link, a spreading code number for a common pilot channel and a spreading code number for an individual channel to a spreading code generator. The spreading code generator generates spreading codes for the respective channels and sends them to a correlator. The correlator outputs the correlation values between a reception signal (IQ signal), the common pilot channel, and the individual channel. A delay profile unit generates delay profiles concerning the common pilot channel and individual channel by in-phase-adding and power-adding correlation values from the correlator for each channel. The path management unit detects path timings from both the delay profiles concerning the common pilot channel and individual channel, and assigns path timings TM to finger units in descending order of reception power. This improves the stability of reception quality.

Code division multiple access (CDMA) receiving device, and path searching method

A prepreg, for printed wiring boards, comprising a flame resistant resin composition containing a specific cyanate ester resin, a nonhalogen epoxy resin, boehmite which is hardly soluble in acids or alkalis and a silicone powder which is a flame retardant assistant, and a base material, which prepreg retains high-degree flame resistance without a halogen compound and has excellent resistance to chemical, high glass transition temperature, excellent soldering heat resistance and excellent heat resistance after moisture absorption, and a laminate or metal-foil-clad laminate obtained by curing the above prepreg.

A receiving apparatus adjusts a path search window width in path search processing according to the saved timing information, after saving timing information detected at the time of cell search processing. A Radio Frequency (RF) unit receives signals which are sent from a base station and transmitted via a plurality of paths (multi-path). A cell search unit detects scrambling codes specific to the base station in received signals and generates timing information corresponding to the multi-path signals when the same scrambling code is detected in a plurality of timings. A path timing memory unit saves each of the timing information for each of the multi-path signals. A path search unit controls a search window width and search start timing in reference to the timing information of the same scrambling code to perform a path search.

Receiving apparatus, receiving method and program thereof

A cyanate ester compound represented by the formula (1), 

Cyanate ester compound, flame-retardant resin composition, and cured product thereof

A CDMA receiver capable of reducing path search processing time. A CDMA receiver comprises a path search section for specifying finger allocation according to delay profiles of respective branch signals received from base stations, a plurality of fingers which are allocated to the branch signals based on the finger allocation specified by the path search section, and a rake receiving section for maximal-ratio-combining the power of a plurality of signals obtained from the fingers, which have been distributed due to their respective delays. The path search section includes a path management section to search for paths in response to the branch signals, and stores detected path information in a detected path table storing area in a memory. The number of paths which the path management section searches for is changed according to the number of received branch signals. Thereby, the processing time for a path search on the occasion when the number of branches has increased can be shortened. Consequently, the CDMA receiver consumes lower amounts of power.

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Tokyo, Japan

Masayoshi Ueno