Abstract: A method and apparatus for defining a plurality of subcategories of the information content of the input to a reproduction system and generating a set of signals corresponding to each such subcategory for the system output and an idealized output. The sets of signals are analyzed to derive a third set of signals which are used to improve a selected aspect or characteristic of rendition fidelity of the reproduction system output. While the invention is described in the context of video systems the principles disclosed are equally applicable to photography, optical scanners and audio systems as well as other multi-channel reproducing systems.

Abstract: An umbrella configured in the shape of a cap, having a main canopy from which extends about a portion of the lower perimeter a brim canopy when in opened and extended position. The brim canopy folds upwardly against the main canopy as it is closed.

Abstract: An improved tobacco treating process comprising cooling tobacco in a liquid nitrogen bath, impregnating the mixture with carbon dioxide gas under preselected pressure conditions, releasing the pressure and subjecting the so treated tobacco to drying gases with temperatures at least above about 250.degree. F. with wet bulb temperatures in the range of at least about 150.degree. F. with a maximum of 212.degree. F.

Abstract: A combined read-only and static read/write semiconductor memory is achieved by modifying the normal threshold voltage of some of the transfer FETs in an otherwise conventional static-memory cell. A read/write data bit is recovered from an addressed cell by applying a word-line voltage higher than both the threshold voltages. Read-only data is read from the same addressed cell by using a word-line voltage higher than one of the thresholds but lower than the other, then decoding the resulting bit-line voltages. An extension allows multiple read-only bits in a single cell by lowering the cell supply voltage when read-only data are addressed.

Abstract: Compounds of the formula: ##STR1## wherein R.sup.2 is --(CH.sub.2).sub.k --X--(CH.sub.2).sub.j --NHR.sup.3 ; wherein k is 0 to 3, j is 1 or 2; X is F or OH; and, R.sup.3 is hydrogen; loweralkyl or loweraralkyl which may be substituted by hydroxy, carboxy, carbamoyl, or carbalkoxy; or, acyl; and, a pharmaceutically acceptable salt thereof; are inhibitors of angiotensin I converting enzyme useful as antihypertensive agents.

Abstract: The invention relates to aminoacyl-containing dipeptide derivatives and related compounds which are useful angiotensin converting enzyme inhibitors and as antihypertensives.

Abstract: Compounds of the formula: ##STR1## wherein R.sup.2 is ##STR2## wherein k is 2 to 5; R.sup.3 is hydrogen; loweralkyl and substituted loweralkyl where the substituents are carboxy, hydroxy, and amino; or aralkyl, substituted aralkyl, heteroaralkyl, and substituted heteroaralkyl where the aryl and heteroaryl substituents are carboxy, hydroxy, and amino; and C is COOR; CONH.sub.2 ; or CH.sub.2 OH; and a pharmaceutically acceptable salt thereof; are inhibitors of angiotensin I converting enzyme useful as antihypertensive agents.

Abstract: A method and apparatus useful in both the recording and playback of audio recordings for correcting the effects of acoustic distortion introduced by the room in which the recording is made and/or played. An acoustic test impulse is generated and the response observed to establish the acoustic properties of the room. The response is sampled and used to generate an equalizing function which may be stored and convoluted with the audio signals being recorded or played to substantially eliminate the distortion. In an alternative embodiment the corrected signals may be further convoluted with a function representing the acoustic properties of a different room environment.

Abstract: Apparatus for correcting the distortion in the output of a playback device introduced by wow and flutter by sampling a constant frequency as reproduced and comparing it with the signal as originally recorded to produce a correction signal for modulating a delay device coupled to the output of the playback device.

Abstract: An improved tobacco treating process wherein fill value improvement can be obtained with less energy and less carbon dioxide requirements comprising mixing tobacco with finely divided solid CO.sub.2 at controlled preselected parts by weight, impregnating the mixture with carbon dioxide gas under preselected pressure conditions, releasing the pressure and subjecting the so treated tobacco to drying gases with temperatures at least above 250.degree. F. with wet bulb temperatures in the range of at least about 150.degree. F. to a maximum of 212.degree. F.

Abstract: A single-FET-per cell read/write memory having capacitor storage elements also contains a pattern of fixed, latent data represented by ion implants in some of the FETs. This pattern is loaded into the capacitors by addressing the cells with a voltage between the thresholds of the normal and the implant-modified FETs, so that some of the capacitors are discharged and others are not. Thereafter, the data may be read out, or overwritten with variable data, by addressing the cells with a voltage higher than both thresholds.

Abstract: The invention relates to dipeptide compounds containing thialysine and related amino acids which are useful as converting enzyme inhibitors and as antihypertensives.

Abstract: Method and apparatus for developing and recording information relating to the color present in a scene under certain illumination conditions. The developed information may be analyzed and compared against certain standards and adjustments made either before or after the scene is recorded on color film to maximize fidelity of the color reproduction during the processing of negatives and prints from said film. An optimized exposure correction is provided for any given set of specific primary spectra of each film layer sensitivity and print dye component for a preferred set of test colors.

Abstract: An apparatus for drying tobacco includes a heater for heating a drying and conveying gas to a predetermined temperature sufficient to dry the tobacco to a predetermined moisture content, a tobacco-gas separator device of the short residence type located downstream of the heater, a first duct establishing gas flow communication between the hot gas outlet from the heater and the entrance to the tobacco-gas separator device, and a tobacco feed device located substantially at the entrance to the separator device for introducing tobacco to be dried into the duct at the entrance to the separator device. In addition, an apparatus of the class described wherein the tobacco to be dried and the drying gas are separately introduced into the separator device.

Abstract: A memory-array sense amplifier includes a grounded-gate depletion-mode FET connected between a bit line and a sense node. Another FET connects a supply voltage VDD to the sense node when turned on by a clock phase signal. Further FETs form a latch circuit.

Abstract: An environmentally sealed key actuatable capacitively coupled circuit board is disclosed comprising first and second flexible dielectric sheets having electrically conductive patterns thereon which form an array of capacitors and connecting matrix of conductors. A spacer is sealed between the sheets and the patterns on the sheets include a first array of capacitor plates on an inner surface of the first sheet and a second array of capacitor plates on the outer surface of the second sheet. A third array of floating capacitor plates is formed by a third pattern on the inner surface of the second sheet.

Abstract: A demand defrost system in which a high resistive epoxy resin hermetically seals a capacitive sensor plate and a noise immune phase detector detects a phase shift caused by the build up of frost.

Abstract: Undesirable internal changes in a running turbine are diagnosed by monitoring the dynamic pressure of the stream of fluid and the structure-borne vibration of the stationary shell. Incipient erosion of blades, material deposit buildup, and other abnormalities are detected by analyzing the dynamic pressure and vibration signal utilizing several signal processing techniques. A better maintenance schedule can be derived, this also serves as a turbine efficiency monitor.

Abstract: Read-only storage chip stores three levels per single-FET cell by providing each cell with an enhancement gate, a depletion gate or no gate connection. Level decoders convert pairs of these three-level signals to triplets of two-level data signals for binary output from the ROS.

Abstract: In a data processor system comprising memory means containing subroutines each having low level instructions with the last instruction being an INTERPRET instruction, and high level language instructions which point to the starting addresses of said subroutines, a hardware high level language interpret capability comprising first and second program counter means which point respectively to said high level language instructions and to said subroutine instructions, and control and timing means responsive to an INTERPRET instruction to load said second program counter means with the subroutine address contained in the high level language instruction pointed to by said first program counter means. Said second program counter means is responsive to said control and timing means to execute the instructions in said subroutine.