Abstract: In encoder side, an electronic watermark generating device generates an electronic watermark which contains a encryption key. An electronic watermark inserting device inserts the electronic watermark containing the encryption key into a first portion of data. An encrypting device encrypts a second portion of the data with the encryption key. The first portion into which the watermark containing the encryption key has been inserted and the second portion which has been encrypted with the encryption key are combined by a switch and thereafter recorded on a record medium or transmitted to a network. In decoder side, the watermark containing the encryption key is extracted from the first portion and the encryption key is extracted from the watermark. The second portion is decrypted with the extracted encryption key.

Abstract: One hundred volt AC power is conducted from a plug to a heater of a water tank through 100V lines. The 100V lines are provided with an electricity supply controlling element. Direct current 5V is conducted from the 100V lines to a microcomputer 15 through a power-supply circuit formed with a transformer, a rectifier circuit and the like. The electricity supply controlling element receives a control signal through the signal line to keep the water temperature in the water tank at a predetermined temperature. The signal line is provided with a tipover switch and a float switch on the way thereof, thereby securely stopping the operation of the electricity supply controlling element when the water tank is tilted or turned over. The tipover switch is one with a smaller capacity, thereby reducing its cost.

Abstract: An etching chamber has a lower electrode section and an upper electrode section. A semiconductor wafer WF is mounted on the lower electrode section. An outer ring including a silicon (Si) ring disposed around the lower electrode section to provide a positioning assistance in mounting the semiconductor wafer WF, and an aluminum (Al) ring disposed under the Si ring. The Si ring virtually expands the area of a wafer WF when plasma is generated, such that unstable plasma around the wafer can be stabilized. To reduce localized abrasion and further stabilize plasma, the Si ring has a height-changing portion. The height-changing portion is formed of a curved surface in the innermost part and function to position the wafer WF.

Abstract: A frame-attached transparent plate is produced by injection-molding a frame in a mold for injection molding, opening the mold, and projecting the frame in an arched form corresponding to a curvature of a glass plate to press the frame to only a surface of a peripheral portion of the glass plate so as to bond the frame to the peripheral portion of the glass plate. With this, the shape in cross section of the frame can optionally be selected even when the glass plate has a curved portion, and problems such as a poor dimensional accuracy, a poor bonding strength, a poor appearance and so on of the frame can be eliminated.

Abstract: Novel aminoethylphenoxyacetic acid derivatives represented by the general formula: (wherein R1 represents a hydrogen atom, a lower alkyl group or an aralkyl group; R2 represents a hydrogen atom or a halogen atom; the carbon atom marked with (R) represents a carbon atom in (R) configuration; and the carbon atom marked with (S) represents a carbon atom in (S) configuration) and pharmaceutically acceptable salts thereof, which have stimulating effects on both &bgr;2- and &bgr;3-adrenoceptors and are useful as agents for relieving pain and promoting the removal of calculi in urolithiasis.

Abstract: The camera includes a strobe device, a distance-measuring device and a heat insulating section. The strobe device has a light source for irradiating light onto an object at the time of photographing. The distance-measuring device measures the distance to the object. The heat insulating section is provided between the strobe device and the distance-measuring device, so as to prevent the heat generated by the strobe device from being transmitted to the distance-measuring device.

Abstract: An image display apparatus which can always display images in proper gradation in the process of receiving image data and successively displaying images. The image display apparatus includes: a data receiving unit for successively receiving a plurality of pixel data representing an image; an image data generating unit for generating image data representing a picture on the basis of the pixel data, which has been received and represents a part of the picture, at predetermined intervals; an average value calculating unit for obtaining a quantity relevant to gradation of the picture; a look-up table altering unit for altering gradation processing condition of the image data on the basis of the quantity relevant to gradation; an image processing unit for executing gradation processing of the image data, in accordance with the gradation processing condition; and a display unit for displaying the picture by using the image data.

Abstract: An image display apparatus wherein, in the process of receiving and successively displaying a plurality of image data representing a plurality of pictures, a previously displayed image can be distinguished from a next image easily and the outline of the previously displayed image can be grasped. The image display apparatus includes: a data receiving unit for receiving a plurality of image data; an image data generating unit for generating overwritten image data at predetermined intervals; a look-up table altering unit for altering gradation processing condition of the first image data and setting that of the overwritten image data; an image processing unit for executing gradation processing of the first image data in accordance with the altered condition and executing gradation processing of the overwritten image data in accordance with the set condition; and a display unit for displaying the first picture and displaying an overwritten picture.

Abstract: A frame-attached window panel 10 wherein a frame member 11 comprises a base portion 12 attached firmly to a peripheral portion of a window panel 90 and a primary molding 15 molded integrally with the base portion, and the primary molding is made of a material different from the material for the base portion 12. The generation of noises can be suppressed by the presence of the frame member which can be formed at low cost.

Abstract: The present invention relates to a crystalline polymorph of 2-[4-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxy-phenyl)-1-methylethyl]amino]ethyl]phenoxy]acetic acid having strong diffraction peaks (diffraction angle: 2&thgr;±0.1°) at 10.8, 19.1, 19.3, 19.8, 20.6 and 27.0° in powder X-ray diffraction pattern, which has potent &bgr;2- and &bgr;3-adrenoceptor stimulating effects and is useful as an agent for relieving pain and promoting the removal of calculi in urolithiasis, and the like. For example, the crystalline polymorph can be prepared by hydrolyzing ethyl 2-[4-[2-[[(1S,2R)-2-hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]-amino]ethyl]phenoxy]acetate phosphate by sodium hydroxide, adding an aqueous phosphoric acid solution at 40° C. and over, adding a mixed solvent of water and methanol or methanol to the resulting compound, and stirring the suspension at 40° C. to reflux temperature for 30 minutes to several hours.

Abstract: A channel-to-channel skew compensation apparatus is provided with N number of frame synchronization circuits 11 for generating frame signals to indicate data position of parallel data on a common time axis for each data transmission channel; a reference timing determination circuit 16 for determining a reference timing based on N frame signals output from the frame synchronization circuit 11; a skewing amount detection section 15 for generating N skewing amount signals according to the reference timing determined by the reference timing determination circuit 16; and a timing compensation section 13 for adjusting output timing of parallel data for each transmission channel according to the skewing amount signal generated by the skewing amount detection section 15.

Abstract: The present invention provides novel phenylaminoalkyl-carboxylic acid derivatives represented by the general formula: (wherein R1 represents a hydroxy group, a lower alkoxy group, an aralkoxy group, an amino group, an alicyclic amino group or a mono or di(lower alkyl)amino group which may have a hydroxy group or a lower alkoxy group as a substituent; R2 represents a hydrogen atom or a lower alkyl group; R3 represents a hydrogen atom or a halogen atom; R4 and R5 are the same or different and each represents a hydrogen atom, a halogen atom or a lower alkyl group; A represents a lower alkylene group; the carbon atom marked with (R) represents a carbon atom in (R) configuration; and the carbon atom marked with (S) represents a carbon atom in (S) configuration) and pharmaceutically acceptable salts thereof, which have excellent &bgr;3-adrenoceptor stimulating effects and are useful as agents for the prevention or treatment of obesity, hyperglycemia, the diseases caused by intestinal hypermotility

Abstract: The use of the undefined low-order four bits of an 8-bit watermark is defined and, when contents are reproduced, a predetermined operation is performed according to the information stored in the low-order four bits. That is, a watermark is added to an original image to create an image with the watermark inserted. When the contents are reproduced, the watermark is detected in the image and, based on the information stored in the low-order four bits of the detected watermark, a predetermined operation, for example, access to a web site on the Internet, is performed.

Abstract: A channel-to-channel skew compensation apparatus is provided with N number of frame synchronization circuits 11 for generating frame signals to indicate data position of parallel data on a common time axis for each data transmission channel; a reference timing determination circuit 16 for determining a reference timing based on N frame signals output from the frame synchronization circuit 11; a skewing amount detection section 15 for generating N skewing amount signals according to the reference timing determined by the reference timing determination circuit 16; and a timing compensation section 13 for adjusting output timing of parallel data for each transmission channel according to the skewing amount signal generated by the skewing amount detection section 15.

Abstract: An audio data input together with a motion picture data is digitized by an A/D converter portion 11 and the digital data from the A/D converter portion 11 is sampled by a sampling portion 12. The sampled data is compressed by a compressing/coding portion 13. In this construction, a sampling frequency of the sampling portion 12 is variably set by a sampling frequency control portion 14 correspondingly to a scene represented by the motion picture data Thus, in coding and compressing the motion picture data and the audio data, the audio data can be effectively compressed at a variable compression rate.

Abstract: A camera consists of a lens barrel unit, a spool chamber unit, a Patrone chamber unit, and a substantially plate-like linking member. The linking member has a photographic aperture, and guide rails for restricting the position of a film relative to the photographic aperture. The linking member links the spool chamber unit and Patrone chamber unit. A picture size switching mechanism realizing a picture size switching function for partly blocking the photographic aperture is mounted on the linking member. The camera further includes a viewfinder picture size switching mechanism for switching viewfinder picture sizes, and a switching control unit for controlling the photographic picture size switching mechanism and viewfinder picture size switching mechanism so that a photographic picture zone and viewfinder picture zone will be set to the same picture size.

Abstract: An electronic watermark data insertion apparatus comprises an insertion information memory (39) for preliminarily storing insertion information for designating electronic watermark data to be inserted block by block and an electronic watermark data insertion unit (33) for inserting, on the basis of the insertion information, the designated electronic watermark data from an electronic watermark data table (37) in a quantized image block by block. An electronic watermark data detection apparatus comprises an electronic watermark date extracting unit (45) for extracting the image data having a biased frequency region projecting in dependency on the inserted electronic watermark data block by block and an electronic watermark data detection unit (50) for calculating a statistical similarity between the extracted data and the electronic watermark data stored in an electronic watermark data table (48).

Abstract: An optical fiber grating is manufactured by heating intermittently an optical fiber, provided with a core having residual stress in the longitudinal direction, softening a peripheral cladding of the core, and forming spatial periodical changes for the relative refractive index-difference between the core and the cladding, in the longitudinal direction of the aforementioned optical fiber by having the index of refraction of the core change, through the releasing of the aforementioned residual stress. As a result, an optical fiber grating and the manufacturing method thereof, which do not require expensive equipment and which exhibit high productivity, and furthermore a grating characteristic which is stable over time can be provided.

Abstract: An optical fiber grating is manufactured by heating intermittently an optical fiber, provided with a core having residual stress in the longitudinal direction, softening a peripheral cladding of the core, and forming spatial periodical changes for the relative refractive index-difference between the core and the cladding, in the longitudinal direction of the aforementioned optical fiber by having the index of refraction of the core change, through the releasing of the aforementioned residual stress. As a result, an optical fiber grating and the manufacturing method thereof, which do not require expensive equipment and which exhibit high productivity, and furthermore a grating characteristic which is stable over time can be provided.

Abstract: Disclosed is a toner residual quantity detecting apparatus for detecting a residual quantity of toners in a developing unit. This toner residual quantity detecting apparatus has a temperature sensor, provided in the bottom of the developing unit, for generating an output proportional to a detected temperature and a detecting circuit for detecting the toner residual quantity from the output of the temperature sensor. This temperature sensor detects a difference between temperatures when covered with the toners and when not covered with the toners, thereby detecting the toner residual quantity.