Abstract: An ultrasonic fog generator can be used to advantage in injecting a fog into the input air of a combustion chamber, in order to improve the efficiency of the combustion chamber and reduce the noxious emissions in the exhaust. In accordance with a feature of the disclosure, a sensor is provided to sense the concentration of noxious emissions in the exhaust of the combustion chamber. The volume per unit time of the injected fog is increased as the concentration of the noxious emissions increases, and controlled to a preselected emissions setpoint. In accordance with a further feature of the disclosure, a supply of chemical suitable for reacting with a component of the noxious emissions is provided, along with means for combining the chemical with the water supplied to the fogging device.

Abstract: An apparatus and method for degaussing a magnetic storage medium, such as a reel of magnetic tape, is disclosed. A pair of opposing E-laminations have windings on their respective center legs. A reel of magnetic tape is inserted in the region between the E-laminations, and is rotated. An AC potential is coupled in series across the windings, to obtain a first magnetic field orientation in the region between the E-laminations. The direction of connection of one of the windings of the series arrangement is then reversed, to electrically alter the magnetic field orientation. This provides an effective degaussing of the magnetic tape.

Abstract: An analog video frame store, resident in certain types of video displays, is used to obtain video signal noise reduction. A frame storage system has an array of semiconductor-controlled storage units for receiving and storing frames of video information as a pattern of stored charge. A circuit is provided for applying sampled portions of the video signals to respective ones of the elemental storage units of the frame storage system. The circuit is operative to apply the sampled portions of the video signals to their respective semiconductor unit storage regions with a time constant for each particular storage unit that depends upon the difference between the sampled signal level being applied to the particular storage unit and the signal level stored at the particular storage unit.

Abstract: An optical transmission factor is measured by using mutual measuring technology having a pair of identical units (44, 50) located on opposite sides of an object (A). Each of said units (44, 50) comprises a pair of beam splitters (47, 48), a light source means (45, 46) for illuminating an object (A) through a first beam splitter (47) and providing offset beam (56) from said first beam splitter (47), a photo-detector (49) for converting optical power from the other unit (50) and said offset beam (56), wherein each of said beam splitters (47, 48) is substantially in parallelogram shape with two pairs of confronting planes (24, 25; and 22, 23), first pairs of planes (24, 25) are not perpendicular to the second pair of planes (22, 23), one of first pair of planes (24) is mirror coated for reflecting the inside beam, so that split beams (29, 31) from single beam (27) share a common point (200) on the plane ( 23). Thus, a dust/soil free measurement with no mechanically moving means is accomplished.

Abstract: A welding monitor for use with a welding system is described. The monitor comprises a store (74) for storing at least two sets of predetermined acceptable ranges for one or more welding parameters such as voltage and current. A comparator bank (66,67) is provided for each parameter to compare the operating value of each parameter in use with the corresponding stored range or ranges. A display including sets of light emitting diodes (18-20) displays information relating to the stored ranges and operating values and is responsive to the comparator banks (66,67) to indicate the relationship between an operating value of at least one of the parameters and the corresponding predetermined range.

Abstract: A method and apparatus is disclosed for improving video signals. High spatial frequency portions of color-representative signals are added to a luminance channel in order to improve the apparent sharpness of images having saturated colors, improve monochrome presentations of color images, and/or reduce the bandwidth necessary to represent color-representative signal components of video signals.

Abstract: An ultrasonic fog generator can be used to advantage in injecting a fog into the input air of a combustion chamber, in order to improve efficiency and reduce the noxious emissions in the exhaust. In accordance with one form of the disclosure, a heat exchange is utilized to advantage in a turbine system in reheating compressed air that has been cooled as the air was fogged, the reheated air being input to the combustion chamber. In another form of the disclosure an adjustable heat exchange is used to controllably heat input air before the fogging thereof, the level of heat exchange depending on properties of the input air and the level of fogging to be implemented.

Abstract: Apparatus and method are disclosed for encoding and decoding a video signal. The standard resolution chrominance and the detail component of standard resolution luminance are encoded and transmitted in a way which allows them to be separated at the receiver without cross color. A conventional type of NTSC transmission is modified by adding together the color and the luminance signals above 2.5 megahertz, the information being repeated for two successive frames, with the color carrier reversed in phase as it normally does. At the receiver, successive frames are added and subtracted to recover the color and the luminance above 2.5 megahertz.

Abstract: A system for the storage, retrieval and manipulation of data for producing a display, in which inter alia, color availability is in the form of appropriately pre-selected palettes, three-dimensional or planar objects are composed of patterns or elements which are individually stored, the display image is made up in buffers which alternate as construction and display buffers by data accessed in memory by lists linking them in ascending order of visible priority, the data then being written into the buffers, the nature of the data storage varying in predetermined fashion for different types of objects, all so that highly complex and visually pleasing graphics can be displayed and manipulated within the time constraint of a full motion video raster scanning system.

Abstract: An apparatus and method are disclosed for encoding, storing, and reading out frames of video signal, such as a television signal. Fast access to encoded frames on a disk is achieved using a technique which employs tag bits to control the storage and decoding of the video.

Abstract: A speech synthesizer for reproducing natural speech with small memory. Synthesized speech consists of symmetric speech segments. Only half of a symmetric speech segment is stored in a memory through ADPCM code, and the other half of the segment is generated by using the stored half segment. Repeat control data is also stored in a memory so that only a single segment is enough to be stored when the same segments are repeated. In the repeated process, the amplitude of the segment is changed smoothly so that amplitude discontinuity between the two successive segments does not occur. The synthesized digital speech data is converted to an analog waveform by using a digital to analog converter.

Abstract: A microwave absorber device for a microwave heater having a chamber for cooking with an opening, and a door for closing the opening with a small gap which is a leakage path between the door and the wall of the chamber. The door is provided with a choke cavity at the peripheral portions of the same, the choke cavity having an approximate 1/4 wavelength of length, and an entrance facing the leakage path. The choke cavity is provided with wave absorber which includes ferrite, and/or carbon, at an edge of the entrance or an edge of the cavity. The wave absorber closes also the leakage path. The entrance itself is sealed by dielectric material.

Abstract: A cross-talk suppression circuit is disclosed for use in an optical communications system which employs a light-emitting diode. A video signal and an audio-modulated carrier signal are both coupled to the light-emitting diode. A cross-talk reducing circuit is provided to couple the audio-modulated carrier signal to the light-emitting diode. The circuit comprises a voltage-controlled phase shifter for coupling the audio-modulated carrier signal to the light emitting diode, the phase shifter having a phase shift that is controlled by the video signal.

Abstract: The disclosure is directed to an improved method and apparatus for obtaining a processed image of a body. In accordance with the disclosed method, a bolus of contrast medium is injected into the body, and the body is irradiated. Radiation which passes through the body is detected and converted into an electronic video signal. The generated video signal is then filtered with a filter function having a temporal frequency response that has a single bandpass peak at a temporal frequency substantially corresponding to the temporal frequency of the movement of the bolus of contrast material through a region of the body. The filtered signal can then be displayed and/or recorded.

Abstract: An error correction system for a difference set cyclic (272,190) code with 190 data bits and 82 test bits in a coded transmission teletext system which transmits character information on the vertical blanking interval of a television signal has been improved in peripheral circuits for operating an error correction circuit. A first improvement is to correct only designated packets which are in frame synchronization condition and/or designated by an index register. A second improvement is to handle shortened (L,k) code where L is less than 272, using common hardware. A third improvement is selection of three operational modes of data to be corrected. In the first mode, uncorrected data is supplied by an external circuit, and said uncorrected data is stored temporarily in a buffer memory, and corrected data is stored in said buffer memory again to supply external circuit corrected data. Transfer of data between the buffer memory and the error correction circuit is handled by wired logic hardware apparatus.

Abstract: An error correction system for a difference set cyclic (272, 190) code with 190 data bits and 82 test bits in a packet which is transmitted on a vertical blanking interval of a television signal has been improved. The present system comprises a buffer memory for storing an original data which is subject to correction and corrected data, and an error correction circuit having at least a syndrome register, a majority circuit and a data register. The data transfer between the buffer memory and the error correction circuit is effected by wired logic hardware means without using software operation time of a programmed computer so that computer operation time is not wasted merely for error correction.

Abstract: An ultrasonic fog generator can be used to advantage in injecting a fog into the input air of a combustion chamber, in order to improve the efficiency of the combustion chamber and reduce the noxious emissions in the exhaust. In accordance with a feature of the disclosure, a sensor is provided to sense the concentration of noxious emissions in the exhaust of the combustion chamber. The volume per unit time of the injected fog is increased as the concentration of the noxious emissions increases, and controlled to a preselected emissions setpoint. In accordance with a further feature of the disclosure, a supply of chemical suitable for reacting with a component of the noxious emissions is provided, along with means for combining the chemical with the water supplied to the fogging device.

Abstract: A semiconductor memory chip which has not only a memory array together with address decoding means, but also a self diagnosis means which functions to indicate a defective cell of said memory array has been found. Said self diagnosis means is mounted on the same chip as that of the memory array, and has means for storing information to be stored in the memory array, and means for comparing content of said storing means with output information which is read out of the address at which the information is stored. When the two data do not coincide with each other, an error signal indicating a defective cell in the memory array at the selected address is output.

Abstract: An apparatus and method for generating video signals using an improved camera system is disclosed. The camera system includes first and second video imaging devices which are scanned at different scan rates. An optical switching system directs light from the scene alternately in time to the first and second video imaging devices, and makes efficient use of available light from a scene being imaged. In an embodiment of the invention, the optical switching system includes a reflective shutter.

Abstract: An apparatus and method for generating video signals using an improved camera system is disclosed. Video recording techniques which save bandwidth, and a temporal filter which is tailored to the eye's temporal response are also disclosed. In the camera apparatus, an optical means directs light from a scene to both a first video imaging device operating at a relatively fast frame rate and a second video imaging device operating at a relatively slow frame rate. The outputs of the two video imaging devices can be combined to obtain a high definition video signal.