Abstract: In a method for forming free-form curves and free-form surfaces, the nodal points of the object to be projected and a series of points set on the object to be projected are projected onto a patch. Free-form curves are generated on the patch on the basis of the result of projection. Thereby, free-form curves of the geometry projecting free-form curves may be generated readily and with high accuracy on the patch and, further, the free-form curves may be used to generate a framing space, or a free-form surface.

Abstract: Broadcast signal receiver which has an internal clock controls an internal or external tuner which receives a plurality of broadcast signals to tune to a predetermined broadcast signal which includes time data indicating a local time. The broadcast signal tuned to is supplied as a tuned output signal. The time data is extracted from the tuned output signal and the internal clock of the broadcast signal receiver is automatically set to the local time indicated by the time data.

Abstract: A fixture for measuring the temperature of a chamber at a number of locations includes a body sized for placement within the chamber, and a number of temperature probes mounted on the body in orientations such that, when the body is placed within the chamber, the probes measure the temperature of the chamber at desired locations. The body also includes adjustable guides which engage the walls of the chamber to assist in positioning the body.

Abstract: A method differentiates simultaneous and sequential key strokes by detecting simultaneous key strokes if two keys are pushed within a judging time T.sub.L. The method includes the steps of (a) measuring a first time T.sub.1 from a time when a first key is pushed to a time when a second key is pushed, and a second time T.sub.2 from the time when the second key is pushed to a time when one of the first and second keys is released, (b) comparing the first and second times T.sub.1 and T.sub.2 with an arbitrary threshold function T.sub.C which is set within the judging time T.sub.L, and (c) differentiating whether key strokes of the first and second keys are simultaneous or sequential based on a comparison result of the step (b).

Abstract: Disclosed are a solvent for cell electrolyte comprising a carbamate represented by the following formula [1]; ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 independently represent a linear or branched alkyl group, cell electrolyte and non-aqueous electrolyte battery comprising the solvent. The solvent can provide batteries showing high withstand voltage and excellent charge/discharge efficiency.

Abstract: A suction head having plural suction pads on both surfaces thereof is used to transfer a substrate of a compack disk and the like from one position to another for loading. The suction head is connected to a rotating shaft rotatable and movable in a vertical direction. The rotating shaft causes the suction head to turn over and move in an up-and-down direction. The suction pads on both surfaces of the suction head are connected to a pair of flexible pipes which are wound around the shaft and connected respectively to exhaust systems. Thus, the suction pads capture and release the substrate by suction control so as to load the same at a prescribed position. Further, a shock absorber is provided to relieve a shock upon the stoppage of the suction head in vertical and rotational reciprocating motions.

Abstract: A method for recording and/or reproducing a signal in which three regions of a magnetization region in which magnetization is effected in a certain direction, a magnetization direction in which magnetization is effected in the opposite direction to that of the former region and a random magnetization region in which magnetization is effected randomly are arranged on a recording medium and digital data are recorded in correspondence with the three regions. Upon reproduction, a calculation is effected by using a reproduced signal and an isolated waveform information derived from the recording medium, thereby obtaining anticipated data whose most likelihood value is high, and this anticipated data is employed as detected data. Accordingly, a large reproduced output can be obtained in accordance with the change of magnetization, and freedom of the code itself can be increased, thereby improving the recording linear density as compared with the prior art.

Abstract: A method of and apparatus for high speed, high resolution, time-shift two-step analog-to-digital conversion (ADC) employing only one ADC module for both coarse and fine signal conversions. The same ADC module is used first for the coarse signal conversion with its output signal stored until the ADC completes the slower fine signal conversion to generate the conversion error for the subsequent compensation process. A digital signal is then generated after the two signals are processed by using a digital signal processing to compensate for conversion error.

Abstract: A video signal reproducing apparatus includes a field memory for storing one field of a reproduced video signal, a signal separator for extracting a horizontal sync pulse signal and a vertical sync pulse signal from the reproduced video signal, and an address counter responsive to the horizontal sync pulse signal for addressing the field memory. The apparatus in addition includes a pseudo signal generator and a reset signal generator. The pseudo signal generator is for producing a pseudo vertical sync pulse signal delayed relative to the vertical sync pulse signal. The reset signal generator is connected to the vertical sync pulse separator and the pseudo signal generator for producing a reset signal to reset the address counter. The reset signal generator normally uses the vertical sync pulse signal to produce the reset signal, but uses the pseudo vertical sync pulse signal to produce the reset signal when a vertical sync pulse is not obtained from the vertical sync pulse separator.

Abstract: In an apparatus for developing a picture on a sheet of developing paper from an exposed sheet of photo-sensitive material by pressing together the sheets of developing paper and photo-sensitive material, and in which such sheets in contact with each other are intermittently transported in a predetermined direction of sheet travel across a back-up surface, and a rotatable roller having its axis of rotation extending substantially at right angles to a longitudinal median of the back-up surface is transported relative to the back-up surface in directions parallel to the longitudinal median thereof while the roller is urged toward the back-up surface with the sheets of developing paper and photo-sensitive material therebetween so as to be pressed together at a relatively narrow stripe-like area defined by the rolling path of the peripheral surface of the roller; standby surfaces extend from the opposite ends of the back-up surface and are raised relative to the latter for defining shoulders therebetween by which

Abstract: An optical disk having radially discrete main and lead-in track areas in which there are respectively recorded color video information according to one of a plurality of TV systems, such as, NTSC and PAL systems, and code data including data identifying that one TV system, is reproduced by an optical disk player including a head for initially scanning and picking up the code data recorded in the lead-in track area and then scanning and picking up the color video information recorded in the main track area.

Abstract: In a digital data reproducing apparatus for demodulating digital data recorded on a magnetic medium with either a first or second record modulation mode, such mode is detected by identifying the frequency of a recovered clock signal derived from the digital data by a clock recovery circuit, and an appropriate demodulation circuit for the recording mode is then selected to demodulate the reproduced digital data.

Abstract: A digital detecting or charge-discharge control circuit is useful in a video camera as a peak detector in an automatic iris control circuit, as a reference voltage generator in an automatic white balance control circuit and/or as a low pass filter in an automatic black balance control circuit. The digital detecting circuit includes multipliers for multiplying by first and second coefficients which determine charging and discharging times, respectively, and the value of such first and second coefficients are controlled or varied in accordance with the selected operating mode of the camera so that broad ranges of iris, white balance and/or black balance control can be achieved.

Abstract: A timing pulse generator for generating timing pulses exhibiting vertical and horizontal scanning frequencies of the type found in video signals, particularly adapted for use with a CCD imaging device. A first counter counts reference pulses having the horizontal scanning frequency to produce address counts that are used to read out timing pulse data stored in a first ROM, the read out data constituting a portion of the timing pulses. A second counter counts reference pulses of a frequency substantially higher than the horizontal scanning frequency to produce second address counts which are used to read out pulse data stored in a second ROM, the read out data constituting another portion of the timing pulses. Two separate ROMs are used to produce timing pulses of the horizontal and vertical scanning frequencies for driving and reading image data from the CCD device.

Abstract: In a demodulating circuit, for example, for demodulating an amplitude- or frequency-modulated signal, analog-to-digital converted values are obtained at a plurality of sampling points in each cycle of the modulated signal, such converted values are integrated to provide a calculated integration value for the respective cycle, and the calculated integration value is compared with a maximal integration value derived in the same manner so as to obtain the demodulated output.

Abstract: In digitally recording a color video signal for a SECAM system, a horizontal blanking interval including a horizontal synchronizing signal and a non-modulated carrier is not recorded as in the case of a color video signal for a NTSC or PAL system. In a reproducing mode, the non-modulated carrier is restored from the reproduced data and then is inserted in the horizontal blanking interval with the horizontal synchronizing signal, thereby reducing the amount of information to be recorded.

Abstract: A multi-drop type bus line system having a plurality of terminals respectively connected to a common bus line, in which each terminal has a connector interconnecting with the other terminals and the connectors at the respective terminals are interconnected by means of a connection cable. Each connector is provided with a switch which is actuated each time the connection cable is coupled to the connector of the terminal, whereby when the connection cable is coupled to the connector, the switch releases an impedance matching resistor connected between predetermined terminal pins of the connector. Impedance matching is improved and standing waves are reduced.

Abstract: An optical low-pass filter for use in the optical system of a color video camera has first and second periodic structures on the same or opposed major surfaces of a transparent substrate and which are dimensioned and arranged in respect to each other to provide a modulation transfer function, in at least the horizontal scanning direction of the camera, which is higher than a predetermined value for frequencies in a range lower than a cut-off spatial frequency and which is low over a range of frequencies extending from the cut-off spatial frequency to substantially more than twice said cut-off spatial frequency.