Abstract: A turn table having a sound recording disk or record mounted thereon is normally urged upwardly by a spring disposed between a lower surface of the turn table and a chassis of a casing to apply a stylus force to a pickup. A weight member is rotatably and eccentrically supported on an inside mounting plate, and an operating claw having a slant surface formed on a lower surface is fixed to the weight member. When a shock is applied to the weight member externally, the weight member rotates by an inertia force in a plane perpendicular to a rotary shaft of the turn table. As a result, the operating claw on the weight member moves toward an upper end of the rotary shaft. The slant surface of the operating claw rides over the upper end of the rotary shaft to downwardly press the rotary shaft together with the turn table. Thus, the stylus force of the pickup is released.

Abstract: A disc ejecting structure capable of positively detecting the position of a disc during a disc ejecting operation to eject the disc from a disc player with safety and high reliability. The disc ejecting structure includes a plurality of disc detecting sensors which are so arranged that a disc which is in the course of ejection or at an ejection completing position is detected depending upon patterns of combination of detection and non-detection modes of the sensors.

Abstract: A depository apparatus includes a common entry slot (14) for receiving both envelopes and single sheets, such as checks and a thickness sensor (216) for providing an output indicative of whether a deposit item is an envelope or a sheet. Transport apparatus (38) transports deposit items along a common feed path to a printer (42) for printing data on envelopes and sheets, and to a read head (40) for reading data from sheets. A sheet alignment mechanism is included in the common feed path and is operable to bring about alignment of a sheet relative to the read head (40) by moving the sheet into engagement with a reference member (170). Operation of the transport apparatus (38) is interrupted during operation of the alignment mechanism. Envelopes are fed directly into a first container (146). After reading of data from a sheet, operation of the transport apparatus (38) is reversed to feed the sheet into a selected one of two additional containers (138, 140).

Abstract: An arrangement for inserting and extracting a recorded medium in which a movable slidable member is slidable in directions into and out of said stationary housing member. The slidable member is provided with two nose-shaped elements that are spaced from one another. A single switch mounted on the stationary housing member is actuated by the nose-shaped elements when the slidable member moves in-and-out of the stationary housing member. The in-and-out motion of the slidable member is made dependent on the states of the single switch.

Abstract: A record medium searching apparatus for a recording/reproducing system.The searching apparatus receives a plurality of record media having index information about the respective contents of recording, and drives the magazine by a magazine driver for sequentially aligning the record media with an index pickup. The index information read out by the index pickup is indicated through an output unit of a recording/reproducing system, so that a user recognizes the content. Additionally, the index pick-up head may also up-date the index information. After the required record medium is searched, the record mediums is mounted to a record/playback deck by a loading/unloading device, thereby performing the recording or the reproducing of signals. Therefore, the contents of a plurality of record media can be simultaneously searched.

Abstract: A digital video signal processing device, comprises a first processor for subsampling a digital video signal to produce a subsampled signal, a second processor for producing an expanded signal from a signal input thereto, a digital filter for limiting the bandwidth of a digital video signal input thereto, and a switch for switching over the operation of device between a first state in which the digital video signal input to the device is input to the digital filter and the digital filter output is supplied to the first processor and a second state in which the expanded signal produced by the second processor is supplied to the digital filter.

Abstract: A non-linear amplifier circuit comprises a low band eliminating filter for receiving an input signal from an input terminal, a logarithmic amplifier and an adder for adding the output signal of this logarithmic amplifier and the input signal with a predetermined polarity relationship to produce an output signal and sending this output signal to an output terminal. The logarithmic amplifier comprises an amplifier for receiving the output signal of the low band eliminating filter, a bidirectional logarithmic element and a resistor coupled in parallel thereto between the input and output terminals of the amplifier.

Abstract: A tilt control mechanism for maintaining an optical axis of an information detecting beam, emitted from an optical pickup (1) carried by a linearly movable carriage (3), perpendicular to an information recording surface of an information recording disk. The tilt control mechanism includes a carrying member (7) connected to the carriage (3) so as to either be movable or rotatable in the direction perpendicular to the information recording surface, the pickup (1) being carried by the carrying member (7) so as to be rotatable about a fulcrum on the optical axis. A detection device detects the fluctuation in separation distance beween the objective lens (4) of the pickup (1) and the information recording surface so that the carrying member (7) can be displayed or rotated relative to the carriage (3) in accordance with the output of the detection device.

Abstract: A video system includes a scan converter for developing a progressively scanned display of video lines from a two field interlaced line system. A spatial array of six pixels covering two successive video lines is developed and gradients are determined between diagonally opposed pairs of pixels and a vertically opposed pair of pixels in the array. The interpolated pixel is developed by averaging the two pixels in the smallest of the gradients. A non-orthogonal display is developed by using horizontally interpolated pixels in the array developed by averaging successive pairs of real pixels, which introduces an offset of one-half pixel duration to the interpolated pixels. An adaptive peaking and noise coring circuit is included. Another spatial array of three line of pixels, both real and interpolated, is developed and a horizontal, a vertical and two diagonal gradients between pairs of pixels in the array are calculated.

Abstract: In a widescreen television signal processing system, a side panel high frequency luminance information component and a side panel color difference information component are combined and processed as a combined signal by a noise reduction encoder, time expander and filter before modulating an auxiliary subcarrier. After demodulation at the decoder, the combined signal is filtered, time compressed and processed by a noise reduction unit before being separated into its constituent components.

Abstract: For the transmission of a digital video signal via a transmission medium (11) consecutive pictures of N.times.M picture elements are subsivided into sub-pictures, a sub-picture being asembled from n.times.m picture elements. The maximum value and the minimum value (U.sub.max, U.sub.min) of a video signal component associated with the picture elements in a sub-picture are determined. In addition, the amplitudes of a video signal component associated with the picture elements in the sub-picture are quantized with a given number of p bits, by means of subdividing the dynamic range (DR) of the video signal component within this sub-picture, into 2.sup.p equal sub-ranges. At the receiver end dequantization is effected in the following manner. On dequantization, a value which is equal to the said maximum value (U.sub.max) is assigned, for at least one of the picture elements in the sub-picture for which the signal component has the highest quantized amplitude (U.sub.

Abstract: A video signal processing apparatus, for processing a video signal including line-sequential signals, is arranged to detect the kinds of information included in the line-sequential signals obtained during each horizontal scanning period; to collect, for every predetermined period, statistics of a detection output thus obtained; and to rearrange the line-sequential signals into simultaneous signals in accordance with a control signal generated on the basis of the statistics.

Abstract: A video signal processing apparatus has a phase-locked loop which includes a quartz resonator, a voltage-controlled oscillator connected to the quartz resonator and oscillating at an oscillation frequency whose fundamental value is determined by the quartz resonator, and a horizontal sync signal lock circuit comparing a phase of a horizontal sync signal and a phase of an output signal from the voltage-controlled oscillator and controlling the oscillation frequency of the voltage-controlled oscillator in response to a difference between the phases of the horizontal sync signal and the output signal from the voltage-controlled oscillator. The video signal processing apparatus also has a device for modulating a video signal by use of the output signal from the voltage-controlled oscillator.

Abstract: An automatic 3-mode switching circuit of a color television set for automatically changing into a suitable system according to broadcasting signals of the broadcasting systems, i.e., PAL-N, NTSC, PAL-M systems, which comprises a color killing section, a color existence/non-existence discriminating section, a vertical synchronization signal processing section, a 50/60 Hz discriminating section, a control section, a switching section, a NTSC color demodulating section and a NTSC oscillation section, a PAL-M color demodulating section, a PAL-N color demodulating section and a PAL-N oscillation section, and a voltage controlling section.

Abstract: In a news program broadcasting system reference codes are assigned to news materials when a cue sheet is prepared and when the news materials are edited. These reference codes are compared with each other when the news materials are transmitted, whereby the news materials are transmitted under simple and reliable control.

Abstract: A high definition television signal with a sequential scan with the standard number of lines per frame and double the frame frequency is processed to generate a single MAC line having a duration substantially equal to that of four sequential lines of standard duration. Each MAC line has two luminance components having different compression ratios. For the remaining two lines, compressed line difference signals are transmitted, thereby allowing reconstruction of all luminance lines at the receiver. Each MAC line further has a U chrominance component and a V chrominance component, alternatively compressed 1:4 and 1:2. The remaining parts of each MAC line are taken up by data signals and audio as well as the necessary clamping. The luminance and chrominance signals are prefiltered to prevent artifacts. The filtering is geared to the visual characteristics of the human visual system, i.e.

Abstract: The present invention is directed to an improved solution to the problem of interference in the picture displayed by a standard NTSC receiver that results from a received television signal that includes a quadrature-amplitude modulated additional-information constituent passing through the Nyquist filter of the standard receiver (this additional-informaton constituent being intended for use only by wide-screen and/or extended-definition television receivers). This solution, in accordance with each of several different embodiments, employs means at the transmitter that includes frequency-dependent attenuation means operating at baseband frequencies to modify the relative amplitudes of each frequency component of the lower and upper sidebands of the transmitted television signal that defines the additional-information constituent in a manner to compensate for the attenuation characteristics of the Nyquist filter of a standard NTSC receiver.

Abstract: A SECAM chroma signal is filtered and supplied to a single axis demodulator, which demodulates first and second chroma signal components modulated with two carriers having frequencies above and below a center frequency, as well as an identification signal for discriminating the transmission order of the first and second chroma signals. An identification signal detector, supplied with the demodulated identification signal, discriminates the transmission order of the first and second chroma signals in accordance with a positive or negative polarity. A rectifier rectifies the discrimination signal, and generates an average output of the discrimination signal. A flip-flop circuit generates a switching signal representing periods of the first and second chroma signal components on the basis of the discrimination signal. An amplifier adjusts the level of the switching signal in accordance with the average output, and generates an off-set control signal.

Abstract: The first difference signal between the current and previous frame signals is obtained by the subtracter pixel by pixel and supplied to both the line memory and the average value calculation circuit. The average value calculation circuit calculates the average value for at least one line of the first difference signal which relates to only pixels with smaller absolute of the difference value than the present threshold. If the pixels which have absolute values smaller than the threshold, are less than the present number, the average value is set 0. Large values of the first difference caused by motion of the target are excluded and not treated as the flicker noise. The second difference signal is transformed by the non-linear circuit according to predetermined characteristics and supplied to the adder. The previous frame signal is supplied to the adder at the same time by delaying the signal through the line memory.

Abstract: A decoding system (10) receives a composite digital NTSC D2 input signal or a composite analog NTSC RS-170A input signal. The decoding system (10) decodes and sample rate converts to a component digital D1 output and a component analog RGB or Y(R-Y) (B-Y) output. A control panel (20) is connected to the decoding system (10) to provide digital control of the important decoding parameters to provide decoding flexibility. The composite video signal is supplied directly to an adaptive combiner (44), through a line comb filter (48) to the adaptive combiner (44), and through a frame comb filter (52) to the adaptive combiner (44). The composite video signal is also supplied to a frame transition or motion detector (58) and to a line transition or motion detector (60). If no frame transition or motion is detected, the adaptive combiner (44) utilizes frame based three dimensional decoding.