Showing papers by "Panasonic published in 1988"

Method and apparatus for protection of signal copy

Abstract: An apparatus for the protection of signal copy for preventing unauthorized copying of music software such as records, compact discs and music tape by recording is arranged such that when recording audio signals on a medium, certain supplemental information is added to the audio signal to be recorded, and in the process of copying by reproducing this medium, when the supplemental signal is detected in the reproduced signal, the copying action is stopped to protect it from being copied.

Remote control apparatus for electronic equipment

Abstract: An apparatus for remotely controlling electronic equipment such as a VTR using a remote telephone set. The electronic equipment has a timer reservation unit which causes the electronic equipment to start a predetermined operation at a predetermined time in accordance with externally inputted reservation information and to become inoperable after a predetermined period. The timer reservation unit includes an input unit, and a remote controller is coupled to the input unit of the timer reservation unit to perform wireless communication therebetween. The remote controller is constructed such that the reservation information is transmitted to the input unit of the timer reservation unit in response to a predetermined push button operation or dial operation of the remote telephone set.

Integrated circuit device and manufacturing method thereof

Abstract: Provided is an integrated circuit device is used in an IC card or the like, and a manufacturing method of the integrated circuit device, having a thin thickness so as to be capable of being manufactured highly accurately in dimensions and highly efficiently. The integrated circuit element (12) is mounted on one surface of the thin metal plates (11) having the other surface which at least part serves as a plurality of external connecting terminals (11a) and, on one surface side, the integrated circuit element (12) is covererd with a sealing resin (15).

Hot water supply system

Abstract: A hot water supply system includes an arrangement for adjusting a temperature of water. A plurality of outlets are connected to water supplied objects. A change-over valve selects one of the outlets and supplies the water to the selected outlet. An outlet setting unit determines a target outlet selected from the outlets. A temperature setting unit determines a target temperature. A control unit controls the change-over valve and the temperature adjusting means in accordance with the target outlet and the target temperature.

Electrical contact bump and a package provided with the same

Abstract: A substrate provided with conductive terminals and another substrate provided with electrode pads and two-stepped electrical contact bumps formed respectively on the electrode pads and each consisting of a first raised portion and a second raised portion formed on the first raised portion, are joined securely by bonding the second raised portions coated respectively with droplets of conductive adhesive and the corresponding conductive terminals by the droplets of the conductive adhesive. The ratio of the area of a section of the first raised portion in a plane parallel to the surface of the electrode pad is greater than the area of a section of the second raised portion parallel to the section of the first raised portion at a predetermined ratio. In an exemplary method of forming the electrical contact bump, the second raised portion is formed by bending a conductive wire in a loop by a ball bonding apparatus.

Color correction method for color copier utilizing correction table derived from printed color samples

Abstract: A color correction method applicable to a digital processing type of color copier, whereby a set of color patches of respectively different sample colors is printed using a set of printing data values, the color patches are then scanned and analyzed to obtain color patch input data values by the color copier, and each of all of the possible input color data values that can be produced by the scanner/analyzer section of the color copier is then related to one of the color patch input data values which is closest thereto in a 3-dimensional color space. Each of these possible input color data values is thereby related to an appropriate color printing value, whereby a color correction table can be generated which provides correction accuracy that is independent of non-linearity of color printing characteristics.

A 32*32-bit multiplier using multiple-valued MOS current-mode circuits

Abstract: A 32*32-bit multiplier using multiple-valued current-mode circuits has been fabricated in 2- mu m CMOS technology. For the multiplier based on the radix-4 signed-digit number system, 32*32-bit two's complement multiplication can be performed with only three-stage signed-digit full adders using a binary-tree addition scheme. The chip contains about 23600 transistors and the effective multiplier size is about 3.2*5.2 mm/sup 2/, which is half that of the corresponding binary CMOS multiplier. The multiply time is less than 59 ns. The performance is considered comparable to that of the fastest binary multiplier reported. >

Floor nozzle for vacuum cleaner

Abstract: The present invention relates to a floor nozzle for use with a vacuum cleaner. The nozzle of the present invention has a sub agitator provided outside an end wall of a main body of the nozzle. The sub agitator is covered with a protecting cover, thereby assuring user safety. A stirring member, a dust outlet and confirmation holes of the sub agitator make it easier and smoother to discharge the dust to the outside, while preventing a burning or a breaking of the agitator.

Lining material and ultrasonic wave drive motor using the lining material

Abstract: The invention relates to a lining material having excellent resistance and for greatly reducing high-speed sliding noise, and to an ultrasonic wave drive motor using the lining material (9) on the moving surface of a rotor (2) thereof. The lining material is chiefly composed of meta-form wholly aromatic polyamide pulp particles and/or meta-form wholly aromatic polyamide fibers, and has a void ratio of 3 to 40 %. By using the lining material (9) as a moving surface of the rotor (2) that comes into contact with a vibration amplifier unit (5) of the stator (1), the noise can be lowered when the motor is driven and the life of the moving surface can be lengthened.

Method and apparatus for producing optical element

Abstract: A plastic optical element with good accuracy and no strain is produced by supplying a mold (1, 2) having a cavity (6) conforming to a shape of the optical element and a feed passage (7) which communicates with said cavity, at least one side (1) of which mold for forming one surface of the optical element is made of a light transmitting material so that light can passes through said material into the mold cavity, charging a photocurable plastic material through said feed passage (7) into said cavity, irradiating a central part (11) of said cavity with light which initiates a photocuring reaction and enlarging the light in the form of a ring light till the lighted area reaches the periphery of the cavity so as to cure the entire photocurable plastic material, light irra­diation being carried out while maintaining a supplementary portion (10) of the photocurable plastic material in said feed passage.

Plasma doping process and apparatus therefor

Abstract: In a plasma doping process utilizing a radio frequency discharging in a vacuum by for doping an impurity into a semiconductor substrate, the radio frequency discharging is made intermittently and under controlling of average current of the discharging, thereby the impurity concentration is desirably controlled; and especially by selecting the vacuum in a range between 1×10 -4 -5×10 -2 torr, undesirable deposition of the impurity on the substrate surface is evadable.

Sub-nyquist sampling encoder and decoder of a video system

Abstract: A sub-Nyguist sampling encoder and decoder has a plurality of interpolators provided in an encoder and corresponding plural interpolators provided in a decoder. Information indicating which interpolator can be used to minimize the interpolation error is superimposed on a value of a non-thinned-out pixel and transmitted from the encoder to the decoder, and the decoder receiving the information is permitted to always perform optimum interpolation. The interpolation information is superimposed on the least significant bit of the value of the non-thinned-out pixel, with the view of effecting the superimposition without increasing the amount of transmission data and without degrading quality of the video signal.

Method and apparatus for controlling terminals on communication network

Abstract: A plurality of terminals on a communication network are connectable to a transmission line to communicate mutually. Each terminal includes a single device or a composite device essentially consisting of a plurality of devices. Transmissions and reception of messages to and from the plurality of terminals on the communication network is performed using an address system assigned to each terminal. The address system comprises a device address or DA assigned to the individual terminals, a sub-device address or SDA assigned to respective devices constituting each terminal and having a single or a plurality of values SDA, and a function address or FA assigned to respective functions possessed by each device and having a single or a plurality of values of FA, whereby even when a terminal to be controlled is a composite device, only a function desired to be controlled can readily be controlled and extensibility of the system can be improved to facilitate control processing in the system through communication.

Antenna and its electronic circuit combination

Abstract: An antenna and its electronic circuit combination is presented to comprise a ground conductor plane 30, a radiating conductor plane 40 disposed in parallel spaced relation to the ground plane 30 and shorted at its one end to the ground plane 30. A ground plane 30 is preferably formed on a printed board 10 which is disposed in parallel relation to the radiating plane 40 to define therebetween an open air space. Mounted on the printed board 10 and received within the open air space are electronic components which form a receiving or transmitting electronic circuit 60 associated with the antenna structure and electrically coupled by means of a feed element 20 to a feed point 44 on the radiating plane 40. Consequently, a number of electronic components forming the electronic circuit for the antenna can well be incorporated within the antenna structure by better utilization of the open air space formed between the radiating and ground planes, giving a space saving compact arrangement to the antenna and its electronic combination suitable for installation in a limited space.

Automatic exchanging system for storage and retrieval of magnetic tape cassettes

Abstract: An automatic cassette exchanging system for performing cassette exchange between an information recording/reproducing device such as VTR and a cassette storage device. The automatic cassette exchanging system has a basic unit comprising a box and a fixing type cassette storage case which is placed in line in the box with the information recording/reproducing device so that a robot moving space is formed in the front side portion of the box so as to face cassette entrance and exit ports of the fixing type cassette storage case. A cassette exchanging robot is provided in the robot moving space to be movable orthogonally for the cassette exchange therebetween. The automatic cassette exchanging system allows addition of a unit or units comprising a box which has a robot moving space and a rotatable type cassette storage case whose cassette entrance and exit ports can face the robot moving space. The basic unit box and the addition unit box can be coupled detachably to each other so that their robot moving spaces are coupled to each other, resulting in easy increase of the cassette storage capacity.

Method of fabricating a polycidegate employing nitrogen/oxygen implantation

Abstract: Disclosed is a method of fabricating a polycidegate in semiconductor device which has a step of forming a conductor film of polysilicon on a substrate, a step of forming an ion implanted layer by implanting nitrogen ions into the polysilicon conductor film, and a step of forming a low resistance conductor film of titanium on the non-monocyrstalline conductor film. When a field effect transistor is formed by this method, using titanium nitride and/or TiSi2 alloy of the polysilicon conductor and low resistance conductor of titanium by heat treatment as a gate electrode material, the thickness of the alloyed layer is uniform, and breakdown of the gate insulating film due to local diffusion of low resistance conductor is not induced. In other embodiments, oxygen ions and silicon ions are also employed to form thin layers of tunnel oxide and amorphous silicon, respectively.

Method of manufacturing molds for molding optical glass elements and diffraction gratings

Abstract: A base material excellent in heat resistance and high-temperature strength is processed into a desired configuration. The processed base material is coated with a heat-resistant film having excellent strength at high temperatures and low reactivity with a glass material to be molded. A resist is applied on the heat resistant film and a desired pattern is drawn thereon by means of electron beam, ion beam, hologram exposure, or ordinary photolithography. Or if a mold having deep unevenness of the pressing surface is required, the resist is applied after an intermediate layer which permits selective etching is formed on the heat resistant film, and the required pattern is drawn thereon by means of electron beam, ion beam, hologram exposure, or ordinary photolithography. The intermediate layer is removed by wet etching or dry etching to emphasize unevenness of the mask. The resist film or the resist film and intermediate layer film are completely removed and a part of the heat-resistant film is removed to obtain a mold having the desired configuration of the molding surface.

Folding type telephone containing a wound electrical connection

Abstract: In a folding type telephone apparatus of folding type comprising a first housing and a second housing rotatably connected by a hinge, electric components and printed circuit boards of respective housings are connected by an electrical connecting member of a tape shaped flexible printed circuit which is wound at least two times around a shaft of the hinge. Using the wound electrical connecting member maintains a reliable electrical connection between the housings even after the telephone apparatus has been used for a long time.

Driving apparatus for ultrasonic motor

Abstract: A driving apparatus for an ultrasonic motor which generates a driving force by using a piezoelectric member, wherein an oscillation frequency fd is varied so as to follow a driving frequency fm which is particular to a mechanical resonance frequency fro when the mechanical resonance frequency fro varies by influence of environment. For this purpose, current and voltage detectors are provided for respectively detecting the current corresponding to the mechanical vibration of the piezoelectric member and the voltage impressed on the piezoelectric member. The phase difference between the detected current and voltage is detected, and this phase difference is used to drive a variable frequency oscillator so as to maintain the phase difference constant. The output of the variable frequency oscillator is then used to drive the driving circuit for the piezoelectric member of the ultrasonic motor.

Electronic circuit apparatus

Abstract: A flexible printed circuit substrate is bent in a flattened rectangular C-shape and electronic parts generating heat are mounted on the inner surface of a central portion of the C-shaped substrate. Then a radiating heat-sink plate is adhered on the outer surface of that central portion. Temperature-sensitive electronic parts are mounted on one end portion of the C-shaped substrate and parts consisting of a power supply circuit are mounted on the other end portion. Then the entire assembly is accommodated in a housing having a connector.

A code error detecting method

Abstract: The code error detecting method uses the code error detecting apparatus which comprises a sector buffer memory for storing various kinds of data, an adder circuit for performing exclusive OR addition of data, a CRC generator/checker for producing error check parities by dividing a result of addition performed in the adder circuit by a predetermined generator polynomial, a temporary memory for storing the error check parities, and an error correction circuit for calculating error correction parities which are used to correct an error of the data. At the time of recording, the data incorporating various parities produced in the code error detecting apparatus is recorded on an optical disk, and, at the time of reproducing, the data reproduced and stored in the sector buffer memory is corrected by using the reproduced error correction parities, and the error check parities are obtained by using the CRC generator/checker. Then, the error check parities thus obtained are compared with the reproduced error check parities stored in the sector buffer memory to thereby detect a code error of the data.

Integrated high voltage generating system

Abstract: This invention relates to an integrated high voltage generating system provided with a charge pump for raising the input power supply voltage sequentially while transferring the electric charges of the capacitors on a stage by stage basis, by serially connecting unit circuits composed of diode elements and capacitors, and supplying clock signals of mutually opposite phases to adjacent capacitors. Source and drain electrodes of a MOS transistor are connected between the first power supply output terminal and a second power supply output terminal, and the gate electrode of this MOS transistor is connected to the input end of any one of the unit circuits of the charge pump, wherein the voltage of the first power supply output terminal is stepped down depending on the voltage applied to the gate electrode of the MOS transistor, and is delivered to the second power supply output terminal. In this way, since the voltage is not stepped down using a dividing circuit, a potential between input power supply voltage and the first input power supply voltage can be obtained from the second power supply output terminal, without consuming unnecessary current and without causing the chip area to be increased.

Chemical vapor deposition reaction apparatus having isolated reaction and buffer chambers

Abstract: In a CVD reaction apparatus having a heated reaction chamber (102) and a buffer chamber (103) connected continuously under the reaction chamber and a wafer boat elevator (114) which is to be raised to put the wafer boat (113) in the reaction chamber and brought down to the buffer chamber (103), a vertically moving shutter (122) is provided which gas-tightly isolates the buffer chamber (103) from the reaction chamber (102) during the CVD reaction process and an evacuation tube (123') having an evacuation valve (123) and an inert gas inlet tube (125') are connected to the buffer chamber (103), for maintaining the pressure of the buffer chamber higher than that of the reaction chamber.

Method of applying a coating of viscous materials

Abstract: In the coating method of a viscous material according to the present invention, a nozzle body having outlets corresponding to many coating rows is employed. The nozzle body is moved, while the gap between the nozzle body and the surface to be coated is maintained constant, so that the viscous material composed of different kinds of materials is discharged out of each outlet, thereby to effect simultaneous coating of the viscous material composed of different kinds of materials in many rows. Therefore, the present invention has such advantages that the surface to be coated is less stained, and at the same time, the surface to be coated becomes more smooth.

Highly oriented superconducting Tl‐Ca‐Ba‐Cu oxide thin films with 2‐1‐2‐2 phase

Abstract: Thin films of the Tl‐Ca‐Ba‐Cu‐O system with 2‐1‐2‐2 phase have been prepared stably on MgO substrates by rf magnetron sputtering and post‐annealing. The post‐annealing of the films was carefully carried out in order to reduce the effect of evaporation of Tl. The annealed films showed a c‐axis‐oriented structure perpendicular to the substrates. The highest zero‐resistance temperature of the films was 102 K. The highest critical current density obtained so far was 1.2×105 A/cm2 at 77 K.

Recording medium and method of producing the same

Abstract: Disclosed is a recording medium which comprises a base body of the recording medium, a recording layer formed on the base body, and a protection layer formed on the recording layer for protecting the recording layer. The protection layer is made from silane sur­face active agent containing fluorine atoms (e.g., CF₂ - (CF₂)m - (CH₂)n - SiCl₃ (m, n: integer) and the agent is polymerized with the recording layer. The recording medium may provide high density recording performance.

Optical pickup head with holographic servo signal detection using a spot size detection system

Abstract: An optical pickup head apparatus comprises a hologram element disposed in the flux of light reflected back from an optical disc, and first and second photodetectors respectively having linear element boundaries extending in a predetermined direction and disposed so as to receive two-focal-point images on their coplanar detection surfaces, whereby the tolerable width of variation in the light source wavelength and the tolerable range of error in the assembling adjustment of the optics can be extended considerably to permit stable differential signal detection.

Effect of biaxial strain on exciton luminescence of heteroepitaxial ZnSe layers.

Abstract: N-doped and Ga-doped ZnSe layers grown by molecular-beam epitaxy on GaAs substrates exhibited double peaks for both the neutral-acceptor-bound\char21{}exciton line (${I}_{1}$) and the neutral-donor-bound\char21{}exciton line (${I}_{2}$) in low-temperature photoluminescence measurements. The split energy of the double peaks corresponds to an activation energy derived from the Arrhenius plot of intensity ratio of the double peak. Peak energies of the double peaks are calculated from energy shifts of valence bands split by biaxial strain, produced by lattice mismatch and differences in thermal contraction between ZnSe and GaAs. These indicate that the double peak of both bound-exciton lines was yielded from two kinds of excitons related to a light hole and a heavy hole of the valence bands. Thus it should be pointed out that the ${I}_{x}$ line generally reported in n-type ZnSe heteroepitaxial layers corresponds to a light-hole branch of usual ${I}_{2}$ line.