Abstract: When a spectrally spread additional information signal, obtained by spectrum spreading additional information such as an anti-duplication control signal or copyright information, is superimposed on a video signal, the level of the spectrally spread additional information signal is controlled according to the scatter of pixel values in each block comprising plural pixels. The sensitivity of detecting additional information from the spectrally spread additional information signal is therefore improved, and the visual effect of the spectrally spread additional information signal on a reproduced image is suppressed.

Abstract: A surface acoustic wave device includes a surface acoustic wave substrate having two IDT electrodes including wiring electrode portions made of aluminum disposed thereon. First, second and third metal films are laminated on each of the wiring electrode portions. The first metal film has superior bondability to aluminum, and the third metal film has superior bondability to bumps. In addition, the second metal film has an ability to suppress the diffusion of the metal defining the first metal film.

Abstract: A method of manufacturing an electronic component includes bonding an electronic component via a bump to electrically and mechanically connect the electronic component to a base member and bonding a cap member to the base member in such a manner that the cap member covers the electronic component element. High temperature aging is performed after bonding the electronic component to the base member via the bump.

Abstract: Disclosed herein are an additional information superposition method and a video signal outputting apparatus, wherein the additional information superposition method for superposing additional information spectrum spread with spread codes synchronized with a vertical synchronizing signal on a second video signal for forming an image of an aspect ratio of N:n which is to be converted into and outputted as a first video signal for forming an image of another aspect ratio of M:m, comprising the steps of setting a size of a unit block before conversion in the second video signal based on a size of a unit block after conversion to which one chip of spread codes for despreading determined in advance is allocated and contents of a conversion process into the first video signal, and superposing the additional information spectrum spread with the spread codes of one chip allocated for each unit block before conversion having the set size in such a manner as to allow the additional information to be extracted from the f

Abstract: A method and apparatus for detecting spectrum spread signals by reducing the correlation between the main information signal and the spread signal as much as possible, whereby the detection of a spectrum spread signal is made easier. From an input signal, in which a spectrum spread signal obtained by spectrum spreading an additional information signal has been superimposed on a main information signal, the spectrum spread signal is detected. Using a level adjusting circuit, the gain of the input signal, mainly the main information signal is controlled to reduce the change in the main information signal, or the input signal is sliced at a predetermined level by a slicing circuit to fetch a signal at a predetermined level or lower.

Abstract: An additional information signal is superimposed on a video signal at a very low level so that it does not stand out on the reproduced image. Spectral spreading code sequences are generated corresponding to different predetermined parts of the video signal. Bit information signals of the additional information signal made up of plural bits are spectrally spread by the spreading codes to generate spectrally spread bit information signals corresponding to the plural bits. The spectrally spread bit information signals are superimposed on corresponding different predetermined parts of the video signal. Because high priority bit information signals of the spectrally spread additional information signal are superimposed on high priority parts of the video signal, high priority information in the additional information can be protected even if the video signal is modified.

Abstract: A method of superimposing additional information on a video signal, transmitting it, and detecting the additional information from the transmitted video signal. The additional information is synchronized with a sync signal in the video signal, and generated in N (N≧1) unit intervals of one field of the video signal. Some predetermined unit intervals of the additional information generated in N (N≧1) unit intervals of one field of the video signal, are phase-inverted. The additional information is identified by detecting the information in unit intervals based on the sync signal in the video signal, and detecting that information in some predetermined unit intervals is inverted. The additional information is identified by detecting the information in unit intervals, and integrating the detection results with the information in inverted predetermined unit intervals inverted.

Abstract: An information processing device, method thereof and a recording medium for easily switching input signals. A broadcast connection and a point-to-point connection are established between the receive device and the transmit device. When the user commands the canceling of the P.P. connection established for the receive device or the transmit device, only the broadcast connection remains established. In this state, the user receives signals on a receive device sent from the desired transmit device, and commands the restoring of the P.P. connection with the desired transmit device. The switching of input signals to the receive device is in this way performed by temporarily canceling the P.P. connection.

Abstract: Disclosed is an aqueous slurry of rare earth hydroxide particles which is particularly suitable for use as a sintering aid of a ceramic powder such as silicon nitride. The aqueous slurry, which is characterized by the very small average diameter of the primary particles and a low electric conductivity as well as outstandingly high stability against settling of the particles, can be prepared by a process comprising the steps of: (a) precipitating rare earth hydroxide particles by mixing aqueous solutions of a rare earth compound, e.g., nitrate, and a basic compound, e.g., ammonia, preferably, in the presence of a surface active agent; (b) collecting the precipitates to give a cake; (c) washing the cake with deionized water until the electric conductivity of the washing has decreased to 3 mS/cm or lower; and (d) redispersing the thus washed cake in deionized water.

Abstract: A method of superimposing additional information on a video signal, transmitting it, and detecting the additional information from the transmitted video signal. The additional information is synchronized with a sync signal in the video signal, and generated in N(N≧1) unit intervals of one field of the video signal. Some predetermined unit intervals of the additional information generated in N(N≧1) unit intervals of one field of the video signal, are phase-inverted. The additional information is identified by detecting the information in unit intervals based on the sync signal in the video signal, and detecting that information in some predetermined unit intervals is inverted. The additional information is identified by detecting the information in unit intervals, and integrating the detection results with the information in inverted predetermined unit intervals inverted.

Abstract: There is provided a device for forming, from original sound-attached moving-picture (video) data, sound-attached moving-picture data of a desired reproduction time which has a data amount smaller than that of the original sound-attached moving-picture data and are suitable to output the corresponding sounds and moving pictures at the same time. The original sound-attached moving-picture data are separated into moving-picture data and sound data. When the separated moving-picture data are moving-picture data which are encoded by orthogonal transform coding, for every frame, any portion representing high frequency components in the moving-picture data in each frame of the moving-picture data is deleted.

Abstract: Video signals are converted into one or more blocks for each predetermined unit amount of data, and a discrete cosine transform (DCT) process is performed in the blocks to convert a video signal from a time-base area signal to a DCT coefficient in a frequency area for data compression. One chip of a spread spectrum signal is allocated to each block of the video signal or to each of a plurality of blocks, and additional information is superimposed on the video signal at a constant level corresponding to a chip value for transmission. The video signal on which the additional information consisting of the spread spectrum signal transmitted has been superimposed is received, and from this received signal, a DC component of the DCT coefficient is extracted. Inverse spread spectrum processing is performed for the DC component of the DCT coefficient extracted to detect the additional information.

Abstract: While a rare earth phosphate prepared by a conventional precipitation method by mixing an aqueous phosphoric acid solution and an aqueous solution of a rare earth salt usually contains an overstoichiometric amount of phosphorus, which is detrimental against luminescent phosphors prepared from the rare earth phosphate, the invention provides a method for the preparation of a rare earth phosphate of a greatly decreased overstoichiometric phosphorus content. The inventive method comprises adding, to either one of the aqueous phosphoric acid solution and the aqueous solution of a rare earth salt, a small amount of oxalic acid or a water-soluble oxalate such as ammonium oxalate so as to effect coprecipitation of a rare earth oxalate with the rare earth phosphate followed by calcination of the oxalate-containing phosphate so as to convert the excess of phosphorus into the phosphate by the reaction with the rare earth oxide formed from the rare earth oxalate by calcination.

Abstract: Proposed is a powder of ytterbium phosphate having a non-stoichiometric phosphorus to ytterbium molar ratio of 1.08 to 2.0 and having a specified average particle diameter and specified diameter of the crystallites forming the particles. The powder is useful as an infrared-absorbing pigment in a printing ink invisible to naked eyes but detectable by an infrared detecting means for printing of stealth bar code patterns. The ytterbium phosphate powder can be prepared in a convenient and inexpensive method utilizing the precipitation reaction by mixing an aqueous phosphoric acid solution and ytterbium salt solution under specified conditions followed by calcination of the precipitates at a specified temperature and pulverization of the calcined precipitates to give the specified average particle diameter.

Abstract: A storage medium stores image data, audio data and processing programs having different reproduction modes, such as recording systems or data format are stored as stream data. When a specific data is to be read out from the stream data, a mode discrimination data is separated from the data to generate mode information indicative of the recording system of the data and the algorithm for reproduction of the data on the basis of the separated mode discrimination data. Based on the mode information, switching of mode is performed to reproduce image data or audio data of one of the reproduction modes among the data recorded with a plurality of mutually distinct reproduction modes, by the processing program. If the processing program is common for reproduction of other data recorded on the storage medium, such processing program is previously stored for use in common for accelerating taking up of the reproduction processing apparatus.

Abstract: A stack type semiconductor laser device, which has a large overlapped area of beam patterns made by laser beams irradiated from a plurality of semiconductor laser elements, is disclosed. A first semiconductor laser element is formed on an N-type semiconductor substrate and is bonded to a surface of a pedestal at the side of an N-type electrode thereof through a solder layer. On the other hand, a second semiconductor laser element is differently formed on a P-type semiconductor substrate, and an N-type electrode thereof is bonded to a P-type electrode of the first semiconductor laser element through a solder layer in such a way that the laser beam irradiation planes of both semiconductor laser elements face in the same direction.

Abstract: A material and method for bonding a semiconductor device to a pedestal, which can obtain a sufficient bonding strength and stable electric contact, are disclosed. On an n-type electrode constituting an ohmic electrode for a semiconductor laser device are formed a Ni layer and an Au-Sn solder layer. Then, the solder layer is melted and bonded to a heat sink provided with Au-plating. The film thickness of the Ni layer is set to approximately 500 .ANG. or more. When the solder layer is melted, Ni in the Ni layer diffuses into the solder layer and Sn in the solder layer diffuses into the Ni layer. By this mutual diffusion, bonding strength and wettability between the semiconductor device and pedestal can be improved. In addition, by setting the composition ratio of Ni layer to the Au-Sn solder layer to 1.3 wt % or more and under 10 wt %, bonding can be performed at a lower melting point and concurrently a higher bonding strength can be obtained.

Abstract: A high-output semiconductor laser element has one of a Cr/Pt/Au electrode and Cr/Ni/Au electrode as a P-type electrode to provide an electrode construction that is robust with respect to heat, high in reliability and stable for a long period of time. The P-type electrode is disposed on an N-type substrate via an epitaxial layer and defines a stripe 41 having a width of 100 .mu.m or more.

Abstract: A communication terminal apparatus receives and stores access information and video information corresponding to the access information, the video information is retrieved from storage for display to a user, a selection of one video information is received from a user, and one access information corresponding to the one video information is retrieved from storage.

Abstract: Aramid paper with high surface smoothness is offered, wherein [said aramid paper] is characterized by the fact that a surface layer, which contains 100 wt % of poly(metaphenylene isophthalamide) fibrids, which weighs less than 10 g/m.sup.2, and which has a coating ratio of 97% or higher, and an intermediate layer, which comprises 70 to 90 wt % of poly(metaphenylene isophthalamide) fibrids and 10 to 30 wt % of poly(metaphenylene isophthalamide) flocks and weighs 20 g/m.sup.2 or less, are laminated successively on at least one side of the substrate layer which comprises 25 to 60 wt % of said fibrids and 40 to 75 wt % of said flocks, that the surface smoothness of the surface layer is 40 sec per 10 cc or higher, and that the number of fuzz fibers at least 1 mm long, which are generated by surface friction, does not exceed 5 fibers per 25 cm.sup.2. Said aramid paper can be suitably used as electrical insulation paper, heat-resistant labeling paper, heat resistant paper, and the like.