Abstract: An objective lens is made up of a light-source-side lens and a medium-side lens wherein at least either one of rim portions of respective opposing surfaces of the light-source-side lens and the medium-side lens forms a rise-up section projected towards the other lens, the rim portion which forms the rise-up section and the rim portion of the other lens at least partially contact one another, and these two lens are fixed together by an adhesive resin layer formed in a spacing between the respective rim portions. With the foregoing structure, an objective lens made up of a pair of lenses which has high rigidity as a whole and is capable of high speed recording and reproducing by suppressing adverse effects of resonance can be realized.

Abstract: An imaging apparatus includes a solid-state imaging element having a matrix of pixels thereon, an optical series for entering a subject image into the solid-state imaging element, and an image shifting mechanism for relatively shifting the subject image in 2-D with respect to the solid-state imaging element. A control circuit is further included for controlling an operation of the image shifting mechanism. Still further, an image synthesizing circuit is included for synthesizing a plurality of images shifted by the image shifting mechanism, along with a moving amount detecting unit for detecting a moving amount of the subject image on the solid-state imaging element. Finally, the imaging apparatus includes a shift amount generating unit for generating an image shift amount for the subject image first, and thence a correction image shift amount based on the image shift amount and moving amount, based on which the image shifting mechanism shifts the subject image.

Abstract: A zoom lens including: a first lens array which has positive refractive power and which is in a fixed position relative to an image plane; a second lens array which has negative refractive power and which provides variable power by moving along an optical axis direction; a third lens array which has positive refractive power and which is in a fixed position relative to the image plane; a fourth lens array which has positive refractive power and which is capable of moving along the optical axis direction so as to maintain the image plane, which moves corresponding to movement of the second lens array and an object to be imaged, at a predetermined distance from a reference plane; a fifth lens array which has negative refractive power and which is in a fixed position relative to the image plane; and a sixth lens array which has positive refractive power and which is in a fixed position relative to the image plane.

Abstract: A single imaging apparatus is adapted to pick up both a motion image and a still image. In an imaging apparatus 1, image light from an object is separated into multiple monochromatic image light components by an optical system 3 and then imaged by an imaging means 4 for generation of an original image signal. The imaging apparatus 1 switches an imaging mode depending upon an output mode. The optical system 3 switches the sate of a variable spatial filter 18 depending upon an imaging mode thereby changing an effect for limiting the spatial frequency. In an output mode for motion images, an interpolative synthesizer circuit 7 generates the output image signal from a single original image signal. In an output mode for still image, an image shift mechanism 19 parallely shifts the optical axis of the incoming image light while the imaging means captures the original image light multiple times so that an output image is produced from these original image signals.

Abstract: The Invention is an image input apparatus equipped with means of image shifting which is capable of inputting images of different resolutions, and enables the transmission band of the spatial filter to be switched in accordance with resolution in order to prevent moire. When a flat transparent refraction plate 22 is inclined relative to the optical axis 10 by which light from the object is introduced, the position where the image is formed on the imaging surface of the CCD 14 is shifted, thus making image shifting possible. High resolution images are obtained by shifting the image a distance shorter than the distance between the photosensitive parts of the CCD 14, and then combining the images. The transmission band of the spatial filter 12 for preventing moire can be switched by changing the relative angles of the double refraction plates 20, 21.

Abstract: An imaging apparatus includes: an imaging plate having a light receiving face; focusing device for focusing light from a subject on the light receiving face of the imaging plate as the image formed on the light receiving face; image position displacing device for displacing a position of the image formed by the focusing device with respect to a reference position; image position displacement control device for controlling the image position displacing device; motion vector detecting device for detecting a motion vector of each image with respect to a reference image; and image synthesis device for displacing pixels constituting each image and for interpolating the displaced pixels constituting each image between adjacent pixels of the reference image, thereby synthesizing the images into a single image.

Abstract: Low-frequency components of a reproduced modulated signal is attenuated by an analog high-pass filter. The modulated signal with its low-frequency components attenuated is converted into a digital signal by means of an A/D converter. Then, the digital signal is directly introduced to a finite impulse response digital filter to be subjected to reproduced waveform equalization. Thereafter, the attenuation of the low-frequency components effected by the analog high-pass filter is compensated in an infinite impulse response digital filter.

Abstract: An imaging apparatus capable of outputting video signals in a plurality of formats is disclosed.

Abstract: In a multi-track magnetic signal reproducing apparatus, a plurality of MR heads including MR (Magneto Resistance Effect) elements are provided correspondingly to tracks on a magnetic tape. At the time of reproduction, constant current from a constant current power supply is sequentially supplied as pulse-shaped current for detecting a signal to each MR element by a switching operation by switch in response to a prescribed clock signal, and output voltage from each MR element related to reproduction of a magnetic signal on a corresponding track is sequentially provided to one input side of a differential amplifier. In differential amplifier, the offset voltage of each MR element provided to the other input side and the above-described output voltage are differentially amplified and only voltage due to the reproducing magnetic signal of each track is accurately extracted.

Abstract: An operating circuit of a Galois Field for executing an operation of the Galois field efficiently and rapidly includes an operating circuit (11) for receiving two elements of a Galois field, for performing an addition or a multiplication of the two elements, and for outputting a first operational result, an operating circuit (12) for receiving another two elements of the Galois field, for performing an addition or a multiplication of another two elements, and for outputting a second operational result, an operating circuit (13) for performing an addition of the first operational result and the second operational result on the Galois field, and for outputting a third operational result, a multiplexer (14) for selecting and one of the first operational result and the third operational result, and for outputting a selected result, a multiplexer (15) for selecting any one of the second operational result and the third operational result, and for outputting the selected result, a flag-decision circuit (18) for det

Abstract: A recording position compensation circuit for use in the digital information recording-reproduction apparatus of the present disclosure has a microprocessor for generating an offset signal indicating a deviation between standard signal processing time, which is required for a process wherein digital medium information already recorded on the recording medium is reproduced through the advanced reproduction head and re-recorded on the recording medium through the recording head, and inter-head travelling time required for the recording medium to travel a distance from the advanced reproduction head to the recording head. A first counter generates a reference symbol pointer indicating a reference of a sequence whereby digital information stored in the memory is read out so that a part of the digital information is rewritten. A second counter generates a compensated symbol pointer having a phase difference corresponding to the deviation with respect to the reference symbol pointer.

Abstract: A wave shaping circuit includes a digital sampling circuit for sampling an input signal and producing a digital signal. The sampled signal is detected by a sign detector for detecting whether it is positive or negative. A unit difference generator is provided for generating a unit difference which is equal to a difference increased, during one sampling cycle, in a positive or negative direction as detected by the sign detector. A register is provided for storing a summed difference obtained in the previous sampling cycle. The summed difference is multiplied by a predetermined coefficient which is between 0 and 1 so that the product changes exponentially. A first adder is provided for adding the summed difference multiplied by the coefficient with the unit difference. The added result is stored in the register. A second adder is provided for adding the sampled input signal with the summed signal stored in the register, and producing a corrected signal.

Abstract: Disclosed is a process for the preparation of hydroperoxides comprising liquid-phase oxidizing an aromatic compound having a secondary alkyl group with molecular oxygen in the presence of a basic aqueous solution and a copper compound catalyst, wherein an aqueous solution containing (A) cupric carbonate and (B) an alkali metal carbonate and/or an alkali metal bicarbonate is prepared outside the oxidation system and this aqueous solution is supplied to the oxidation system.According to the process, even under basic conditions, inactivation of the catalyst owing to precipitation is prevented, and the intended aromatic hydroperoxide can be obtained at a high oxidation speed.