Typically twelve keys are arranged for one-hand touch typing in alphanumeric data processors permit a single finger to choose either single keys or multiplicities of side-by-side keys to give enough selection for alpha processing and to arrange keys conveniently about the fingers for touch typing. Tactile feedback structural patterns including indentations and raised surface portions identify single keys and intersections of two and three keys where the finger strokes occur. By providing three k...

In a digital sigma-delta modulator with multi-phase operations by time-sharing including an adder to produce multiple integration, an arrangement includes switching circuitry for alternately establishing one of: a connection between a first input of the adder and an input of the modulator; and connections between the adder output and the first input of the adder by way of a first integration delay circuit, and the adder output and a second input of the adder by way of a second delay circuit.

A method and device for stimulating the finger of an operator acting on a static keyboard, which method consists in making at least part of the keyboard mobile on which the finger of the user bears at least partially when it actuates a key, detecting at least one component of the force exerted by the finger on the keyboard during such actuation and causing a pre-established movement of the mobile part of the keyboard when the value of this component exceeds or has exceeded a threshold value.

In a brazed joint between a coiled tungsten filament and a molybdenum lead, the lead continues integrally into a braze section which extends longitudinally within the coiled filament. The braze section may be formed by suddenly melting the portion of the lead used in the joint by a pulse discharge in an inert or reducing gas. The liquid molybdenum wets the tungsten and is drawn by capillarity into the turns of the coiling where it is rapidly chilled and solidifies in a time interval too short fo...

Methods of programming a pump and insulin pumps. One method include displaying a first screen on a display of the pump. The method also includes, upon displaying the first screen, emitting a first sound. The method further includes displaying a second screen on the display of the pump, the second screen different from the first screen. The method also includes, upon displaying the second screen, emitting a second sound different from the first sound.

An optical amplifying apparatus which includes an optical amplifier, an optical attenuator and a controller. The optical amplifier amplifies a light signal having a variable number of channels. The optical attenuator passes the amplified light signal and has a variable light transmissivity. Prior to varying the number of channels in the light signal, the controller varies the light transmissivity of the optical attenuator so that a power level of the amplified light signal is maintained at an ap...

A delta-modulated magnitude amplifier is used to amplify the magnitude component of an RF power amplifier that employs envelope elimination and restoration. The delta-modulated amplifier introduces a smaller amount of non-linearity than traditional approaches, which are based upon pulse-width modulation. The disclosed technique can be implemented using switched-capacitor circuits in a standard MOS technology with only two external components, i.e., an inductor and a capacitor. Thus, the disclose...

A memorial for deceased humans or animals in which the cremated residue or ash is blended or mixed with particulate glass, the mixture being heated to form a liquid pool of glass with the cremation residue or ash dispersed, infused and/or absorbed therein, the molten glass and ash being removed from the heat source after a suitable time period and transferred to a mold in the shape of the memorial, the mold allowed to cool until the memorial sets, the memorial then removed from the mold and rehe...

A miniature keyboard wherein the keys are arranged in a way to improve data entry and decrease the chance of depressing multiple keys at a time. Accordingly, the height of the keys are patterned to decrease the chance of multiple key depressions thus increasing the accuracy of data input into the personal digital assistant. In one embodiment, the height of the keys is alternated down the individual rows of keys. In another embodiment, the height of the keys is alternated across individual column...

A system and method for reducing linearity errors in an A/D converter, such as a delta-sigma converter. The linearity errors in the delta-sigma converter are modeled by generating a set of digital signals representative of an inputted sine wave. The set of digital signals are low-pass filtered and subjected to a fast Fourier transform algorithm to generate a frequency domain representation of the sine wave. Thereafter, a net linearity error spectrum is removed from the frequency domain represent...