Abstract: A compiler includes a register allocation method making use of the concept of assigning temporary items to lifetime holes if such holes exist that are suitable. The compiler includes a front end for converting the input code to an intermediate representation, then this input representation is traversed to identify all of the temporary items, and to find all of the holes in the temporary items. Lists are maintained of the identified temporaries and holes. Register allocation then includes assigning temporaries to registers so long as there are free registers, and if holes are available in already-assigned temporaries then these holes are used in assigning registers. After all the available registers and holes are used, remaining temporaries are unallocated and thus represent memory references.

Abstract: A method for multiplying the speed-resolution product of a raster scanning or imaging device such as an inkjet printer, and a resulting pixel image data structure, are disclosed. Illustratively, a 300-dot per inch (dpi) by 600-dpi logical pixel image is mapped to a corresponding, non-overlapping physical dot image, and the printer's inkjets are fired responsive to the dot image to direct generally spherical ink droplets onto paper at 600-dpi resolution grid timing in order effectively to double the horizontal resolution of the printed pixel image, without increasing the firing rate of the print head. In order to accomplish this, and to avoid ink dot overlap, the printable pixel image is thinned before it is printed by a method that leaves no visible horizontal or vertical gaps by selectively turning off pixels within a `black` image that were on and that otherwise would result in ink dot overlap and slower print head speeds were the inkjets cycled at 600-dpi resolution timing.

Abstract: A method is disclosed of mapping raster data input of a source data set to a destination data set, wherein the source and destination data sets have different resolutions. Initially, a resolution ratio is determined between the source data set and the destination data set. The horizontal component of the source data set is converted to the resolution of the destination data set by copying select discrete groups of the source data to form a desired number of discrete groups of the destination data. A select number of vertical, or raster, rows of the horizontally converted data set are copied to form a required number of rows, thereby completing the destination data set. Look-up tables are provided to efficiently convert the horizontal component of the source data set. An apparatus for mapping raster data input includes a computation mechanism for determining the resolution ratio, and mechanisms for converting the horizontal and vertical components of the source data set into the destination data set.

Abstract: Save-Exception-State and Restore-Exception-State primitives are defined in the operating system and are used to confine the reporting of delayed asynchronous coprocessor exceptions to the respective code threads that generate the exceptions. The Save-Exception-State primitive saves the coprocessor exception state pertinent to the currently executed code thread, and the Restore-Exception-State primitive restores a selected one of the exception states having been saved. The Save-Exception-State primitive synchronizes the coprocessor, disables use of the coprocessor, saves any pending coprocessor exception state into memory, and clears the coprocessor exception state information from the coprocessor or a "thread descriptor" area of memory allocated to the current code thread.

Abstract: A shock absorber includes an extruded reservoir housing and a sleeve with position valving therein. The shock absorber coordinates the position valving and valving in the piston assembly in a manner such that the position of the piston assembly relative to the position valving becomes a factor in determining changes in valving.

Abstract: A controlled fuel flow system from variable flow solid fuel gas generator to secondary combustor is provided, which system includes a hot gas valve which is operated by an electronic controller. The valve is mounted between the gas generator and the secondary combustor, which valve has in the throat thereof a pivotable blade that moves to relatively blocking and unblocking positions therein and a nozzle downstream of such blade which communicates with the secondary combustor. A first pressure transducer is mounted in the gas generator and a second pressure transducer is mounted downstream of such blade near or in the nozzle. Actuator means are also provided to pivot such blade between relatively blocked and unblocked settings as guided by electronic gas flow controller logic. The secondary combustor has one or more air ducts therein and the above system is mounted, e.g., in a variable flow ducted rocket.

Abstract: This is a device for delivering medicaments to infants by means of a dispenser in a pacifier. The dispenser regulates the rate of medicament released by using semipermeable membranes or capillary tubes. As the child or infant suckles on the pacifier, a flow of saliva bathes the dispenser and mixes with the dispensed medicaments.

Abstract: The invented graphics images data compression method includes software which selectively compresses data on a raster-row-by-raster-row basis or on a byte-group-by-byte-group basis. The raster-row-by-raster-row basis compares bytes within adjacent raster rows and thereby detects repetitions between the rows. When data is compared on a raster-row-by-raster-row basis, the invented method records any differences as relative offset and replacement bytes. The byte-group-by-byte-group basis compares different byte groups within a single raster row, and thereby detects repetitions within the row itself.

Abstract: A wideband buffer is described which has improved slew rate over prior buffers. In one embodiment the buffer includes (a) complementary buffer subcircuit, (b) first and second current mirrors to bias the buffer subcircuit in a cross coupled manner, and (c) means of setting a stable quiescent operating point for the circuit.

Abstract: An overpressure relief plug for safeguarding pressure gauges that tend to damage due to internal overpressure comprising a safety plug for interference sealing fit application to an aperture formed in the pressure gauge housing that otherwise communicates the housing chamber that may be subject to overpressure to the ambient atmosphere, which plug is formed from silicon elastomer to define a shank that is pressed into the housing aperture, a grip portion on one end of the plug shank that is to aid in initially applying the plug to the housing as part of the gauge assembly procedure, and a stop cap at the other end of the shank that forms a head for the plug and that is spherically contoured and defines a planar stop annular surface thereabout having a marginal rim proportioned for firm sealing engagement with the exterior surface of the housing on application of the plug to the housing, with the plug shank and aperture being proportioned to "pop out" of the housing aperture when the pressure of the housing ch

Abstract: A self powered vacuum evacuation device adapted for medical applications employing cylinderical body with piston member which is instantly energizable to a preselected variable vacuum level by using locking members and having automatic flow control valve system so that the device can be continuously cycled in operation without connecting and disconnecting to a source of fluid and drainage reservoir.

Abstract: A target fluid flow indicator gauge comprising a non-magnetic housing defining inflow and outflow ports and a cross channel including a rounded portion that is curvilinear about an axial center that is coaxial with a fluid flow central axis through the gauge, with the channel rounded portion lying in a plane that extends normally of such axial centers and functions as a conduit for the fluid flow that is to be measured, a leaf spring adjustably and cantilever mounted in an upper portion of the housing chamber and adjacent one end of the spring, which leaf spring at the other end of same is fixed to a rigid lever arm that extends diametrically across the channel rounded portion, an orifice coaxial with said axis through which the fluid flow is directed into the chamber portion and defining a throat portion of novel configuration at the downstream end thereof that opens into the channel portion, with the lever arm mounting a target in centered relation within the orifice throat portion in coplanar, close fittin

Abstract: Alkylphosphate solvents are disclosed for use in an amino acid and amino acid ester enzymatic coupling process. .alpha.-Aspartylphenylalanine methyl ester and intermediates thereof are prepared enzymatically in an alkylphosphate solvent or cosolvent.

Abstract: A target fluid flow indicator gauge comprising a non-magnetic housing defining a target chamber having a rounded portion that is curvilinear about an axial center that is coaxial with a fluid flow central axis through the gauge, with the chamber rounded portion lying in a plane that extends normally of such axial centers, a leaf spring mounted in the housing chamber and adjacent one end of the spring, which leaf spring at the other end of same has fixed to a rigid lever arm that mounts a disc-like target in centered relation within the chamber portion with the housing further defining inflow and outflow fluid ports on opposite sides of and centered on the axial centers and on the target for directing fluid flow against the target and out of the chamber; the lever arm carries a driving magnet assembly adjacent the target that is magnetically coupled through an imperforate wall structure of the housing to an externally located follower magnet assembly that acts through a short lever arm to pivot an indicator po

Abstract: An improved current mirror is described which has utility as either a stand alone current source or as a gain block whenever current gain or transimpedance gain is required. When used as a current source the current mirror exhibits higher output impedance, and when used as a gain block, the current mirror exhibits improved higher frequency performance and high transimpedance gain than prior art current mirrors.

Abstract: A mobile cooking apparatus including a trailer vehicle having an elongated chassis with front and rear end walls, open sides, and a platform supporting one or more elongated cooking units and at least one cover member having foldable cover segments adapted to be moved downward over the chassis in a closed position to confine the cooking units within the chassis and moved upward to an open position in which the cooking units are exposed for cooking operations upon the chassis. The cover members are so constructed that a side cover segment clearly displays indicia, such as advertising material in either its open or closed position. Each cooking unit includes an elongated burner unit which is detachable mounted upon the chassis and which detachably supports a cooker member of any one of various types, such as a deep-fat fryer, boiler, broiler, solid griddle or an open grill.

Abstract: A sealed differential pressure gauge of the general type shown in Phillips and Zoludow U.S. Pat. No. 3,645,140 in which a sealed housing is provided that includes a flexible diaphragm that is to be exposed to differential pressures to operate a sensitive and accurate motion transmitting indicator device that is in the form of a pivotally mounted helix cooperating with a range spring mounted magnet, with the range spring being linked to the diaphragm so that the movement of the diaphragm, indicates differential pressures and changes thereof, operates the indicator device for reading of the gauge. The housing comprises a housing member and back plate therefor that, together with the rim portion of the diaphragm, are shaped to provide for blowout capability of the gauge that is rearwardly directed out of the back of the gauge should overpressures be experienced when the gauge is in operation.

Abstract: A roll-up type U-tube manometer of the type disclosed in Dwyer U.S. Pat. No.