Abstract: An automatic diaphragm control device for the objective of a television camera, utilizing a video signal coming from the television camera to effect the diaphragm control The present invention provides a device including a fixed photometric circuit of a drastic peak characteristic in a part of a variable photometric circuit so as to be readily switched to perform a drastic peak photometric adjustment, in addition to an ordinary variable photometric adjustment, and also provides an automatic diaphragm control device of variable photometry type used in a television camera in which the variable photometric circuit is also arranged so as to be switched between the variable peak mode and the variable average mode so that a simple operation of changing over on one and the same circuit permits the variable photometry of both types to be selectively performed in order to obtain not only the drastic peak photometric characteristic but also versatile photometric characteristics optimized for various requirements.

Abstract: Apparatus for remotely controlling the operation of various electronic devices comprises a remote-control unit having a read-only memory for storing a data table, a keyboard for generating a program to be executed at a predetermined future time, a random-access memory for storing the program, a central processing unit jointly interactive with the read-only memory and the random-access memory, and a transmitter controlled by the central processing unit for producing a remote-control signal based on the data table and the program. A receiver is responsive to the remote-control signal for controlling the devices in accordance therewith, and a simulator is provided for producing the remote-control signal before the predetermined future time, so that at least a portion of the program is pre-executed as a test of its validity.

Abstract: A portable image forming device which is moved on an original in a direction perpendicular to a primary scan direction for subscan, and divides original reflection light beams into picture pickup elements in the primary scan direction through an image forming optical system to imageform the pickup elements on a pickup device for reading. The pickup range of the pickup device in the primary scan direction is designed to be variable, and means for setting the pickup range is provided. With a portable copying machine which houses the pickup device and a printing section including a writing head in a single casing, paper is fed to the printer section as required by making use of the movement of the machine for original scan.

Abstract: In a high-quality component video digital transmission system (FIGS. 1 and 2), transmitter DPCM encoders (110-112) and corresponding receiver DPCM decoders (210-212) include respective adaptive quantizers (402-502 and 802-902) in which a set of prediction error-representative values is selected by the predicted value of only the one sample currently being encoded or decoded. At each encoder and decoder, the predicted values are quantized by a quantizer selector (406-506 and 807-907) into groups. One group is selected by the predicted value of the current sample. An adaptive quantizer set is then selected by the selected group. The selected set's prediction error-representative values span a range of error values bounded by the maximum and minimum error values possible for any predicted value of the selecting group.

Abstract: In a ring communication system, data is received by and retransmitted by a plurality of network interface units spaced along the ring. Each network interface unit includes an elastic storage buffer which is preferably less than two bits in length. A feedback loop in each unit continuously controls the data transmitting rate from the network interface unit as a function of the average number of data bits in the elastic storage buffer. By thus controlling the transmitting rate, delay of data in the elastic storage buffer is controlled. Each network interface unit provides some of the delay required to cause the sum of all delays in the ring to become a multiple of 360 degrees. The entire network thus stabilizes at a substantially common frequency which provides the necessary phase delays throughout the network to provide a total phase shift of a multiple of 360 degrees.

Abstract: A combination device for wireless video monitoring and remote control of a still camera is disclosed. In operation, the device includes a television camera that is positioned so as to photograph through the view finder of a camera. The image photographed is transmitted electronically to a video receiving means located at a remote distance from the camera. The camera lens and the means for vertical and horizontal positioning of the still camera are connected by servo motor means to a means for receiving control signals. The control signals control the focusing of the lens and horizontal or vertical position of the camera. A transmitting device located at the site of the video receiving means, transmits control signals for directing the servo motor means to move the camera's lens or change the camera's position.

Abstract: In a transmission system, adding and/or dropping any one or more of a plurality of digital signals of one or more digital transmission bit rates is facilitated by employing a unique transmission signal in which data words associated with individual digital signals are arranged in prescribed groups. The transmission signal data word groups are obtained by formatting the individual digital signals to be combined into a unique channel frame format common to all of the digital signals and by employing a unique one-step multiplexing process to insert digital words from the channel frames into the group of data word positions in the transmission signal associated with the particular signal being combined. Consequently, digital signals may be added to the transmission signal by formatting them into the common channel frame format and, then, inserting the digital words therefrom in the one-step multiplexing process into an associated group of data words positions in the transmission signal.

Abstract: A method and device for speeding the transmission and reception of documents by digital facsimile systems employing two-dimensional coding. Information regarding a reference line of a document need not be reaccessed from memory during the processing of the scan line next-following a uni-color reference line. A user-accessible paper-width register utilized in conjunction with a comparator according to the speed-up method permits ready detection of uni-color lines and permits encoding and decoding according to either of two international standards. Utilization of the paper-width register affords ready availability of the accumulated run-length of picture elements within uni-color lines without the need to accumulate the run length or reaccess the uni-color reference line.

Abstract: Apparatus for bridging between two local area networks is disclosed. The apparatus has two bridge sides each including means for receiving or transmitting a message frame, controller means for directing an incoming message frame into a memory means shared between the bridge sides or directing a frame out of the memory means for transmission, address reading means for reading an address portion of the incoming frame and processor means for determining frame transmissibility from the address portion as provided by the address reading means. The apparatus is configured such that the processor means determines incoming frame transmissibility substantially concurrent with the controller means directing the incoming frame into the memory means.

Abstract: A method and an apparatus is disclosed for converting a plurality of electrical signals (14(a-c)) into a color visual display on a device (10). The device (10) comprises three CRT's (16(a-c)). Each CRT (16(a-c)) receives an electrical signal (14(a-c)), generates a beam of electrons (24(a-c)), modulates the beam of electrons (26(a-c)) and converts them into a beam of light (18(a-c)). The beams of light (18(a-c)) are focused and are delivered to impinge an optical mask (32) and to pass therethrough to impinge a photocathode screen (40) in an evacuated envelope (30). Within the envelope (30), spaced apart from the photocathode screen (40), is a segmented phosphor screen (42) with the phosphor screen (42) being defined by three different types of phosphor compositions in three different locations. Photoelectrons released from the photocathode (40) are accelerated and directed to impinge the phosphor screen (42).

Abstract: A picture of a person is photographed by an electronic camera such as TV camera, and output image data signal thereof is differential-operated, so that a line pattern picture signal is produced; then by making a light image of the line pattern picture on a TV set, a photosensitive resin layer is exposed, and by developing it a stamp of the line pattern picture is produced.

Abstract: In a multiservices digital network (FIG. 1), comprising separate narrowband switch (607) and wideband switches (505, 606), the network control complex (612) includes a program-controlled call processing arrangement (800) that is program-independent of a resource management arrangement (803) and of the physical network. The call processing arrangement views the network as comprising logical channels and logical call paths interconnecting logical channels. It does not distinguish between narrowband and wideband communications; it responds to subscriber (102) messages requesting subscriber functions for both narrowband and wideband communications by directing the resource management arrangement to establish and dismantle logical call paths and to create and destroy logical and physical connections between the logical channels and the logical call paths.

Abstract: A pix-in-pix television signal processing system develops a composite video pix-in-pix signal representing a reduced-size auxiliary image insert in a full-sized main image. The auxiliary video signal is separated into luminance and chrominance components by filtering circuitry. The luminance signal is subsampled in a ratio of one to four and the chrominance signal, which is composed of two color difference signals modulating quadrature phase related subcarrier signals, is applied to circuitry which interpolates between selected pairs of samples to develop a frequency converted chrominance signal, representing the two quadrature phase related color difference signals modulating quadrature phase related subcarrier signals having frequencies that are one-quarter the frequency of the original subcarrier signal. The frequency converted chrominance signal and subsampled luminance signal are combined to generate a composite video signal representing the reduced-size auxiliary image.

Abstract: An embodiment of the device comprises: three subtracters, three multipliers and a correction coefficient determination device. The subtracters and multipliers make it possible to obtain three signals, whose values are multiplied by a same coefficient, in order that they retain the same ratios as the values of the signals supplied to the input of the device. The device for determining a correction coefficient comprises means for determining which of the input signals has the highest instantaneous value at each time, in order to apply thereto a predetermined, non-linear transformation and for supplying a correction signal which is applied to the multipliers.

Abstract: In an image pickup apparatus according to the present invention, a rotary scanning mirror (2) is rotated to sense the image of an original (10) by a linear image sensor (4), which in turn outputs picture signals to be stored in a frame memory (5), so that the image of the original (10) is displayed on a display unit (6) on the basis of the stored picture signals. A light pen (9) specifies a scanned range of the image displayed on the display unit (6) and a controller (8) indicates rotation angles of the rotary scanning mirror (2) on the basis of position signals from the light pen (9) to specify the scanned range while varying the step size of the rotary scanning mirror (2) thereby to vary resolution. Thus, a noted region in the original (10) can be easily image-sensed in high resolution.

Abstract: There is a solid state image pickup device having a signal voltage output circuit to output a charge signal as voltage information through a charge-voltage converter and a correction voltage output circuit to generate a reference voltage into which no signal charge is input and which has a circuit arrangement similar to the signal voltage output circuit. The invention intends to provide a signal processing circuit of such a solid state image pickup device in which the output of the correction voltage output circuit is provided with a time constant circuit, and this signal processing circuit consists of a differential amplifier to amplify the difference between the correction voltage output derived through the time constant circuit and the output of the signal voltage output circuit.

Abstract: A color television pickup system has a single chip imaging device operating in a field integration mode. In this system, a mosaic color filter array disposed on the imaging device is comprised of unit filter arrays arranged in columns and rows. Each unit filter array consists of eight color filter elements arranged in two columns and four rows. The upper and lower four filter-element arrays in the respective unit filter array are each comprised of color filter elements of green (G), green (G), red (R) and cyan (Cy).

Abstract: The information signal for a green camera tube modulated to scan each line in an undulating path is sampled by a filter trap at the frequency of modulation in a narrow band (about .+-.1/2 MHz) and combined with the red and blue camera tube signals in the same proportion that each contributes to the total luminance relative to the green information signal thereby pseudomodulating the red and blue camera tube information signals. Although it is preferable to do this at the camera, thereby having to do it only once for the television transmission system, it may be done at the display tube. This modulation of the green tube scan, and pseudomodulation of the red and blue tube scan not only increases resolution for color television but also eliminated aliasing because the scan of all color camera tubes is effectively undulating so that there can be no scan parallel to horizontal edges of an image that causes aliasing in normal interlaced field of scan lines that are straight horizontal lines.

Abstract: A method of modifying luminance levels of a black and white video signal is provided. The signal is fed to a voltage controlled amplifier and to first and second clipper amplifiers. Each clipper amplifier has an adjustable gain and an adjustable clip level, which are set to desired levels. The outputs of the clipper amplifiers are fed to a summation amplifier in which they are summed to produce a control signal. The control signal is fed to the voltage controlled amplifier, to vary its gain, and thus to compress one band of luminance levels whilst expanding another band of luminance levels.

Abstract: A picture signal generating apparatus has a CCD line sensor. In this apparatus, an image read instruction pulse is generated whenever a CCD line sensor or an original image is moved by a predetermined distance, an exposure is detected by a time integral determined by a pulse interval of the image read instruction pulses upon detection of an intensity of light reflected by or transmitted through the original image, and an image output from the CCD line sensor in response to the image read instruction pulse is normalized according to the detected exposure. Image output normalization can be achieved by dividing the CCD line sensor image output by the exposure or by controlling the intensity of the illumination light so as to keep the exposure constant.