Month of January 2005

Some commands in a UNIX* type operating system are appropriate for one or more files, or one or more directories, or both. A method is described where commands only appear when they are appropriate. A large set of commands is supported by most Operating Systems. The user may typically only use a subset of these...

A method has been developed for achieving uniform levels of refill over a wafer during the selective epitaxial refill process. This is accomplished by eliminating local turbulent gas flow across the surface of the wafer which had contributed to the non-uniformity of the wafer. When wafers 1 (Fig. 1) were examined, it...

The output copy bin of a xerographic copier includes a vertically movable table upon which output copy sheets are stacked. The vertical height of the table is controlled by an optical wand and a servo motor. The optical wand comprises a light source located on one side of the table and a photocell located on the...

It is important that the Personal Computer (PC) system response be as close to the entry speed of the operator as possible so that productivity can be increased and frustration decreased. The speed of the application is directly related to the size of the files. Each time an invoice is created, a verification has to...

This article describes a shading compensation in a document scanner wherein a curved dichroic filter is positioned between a fluorescent lamp and a document being scanned. Referring to Fig. 1, a document 1 is illuminated by a fluorescent lamp 2 through a dichroic filter 3. Reflected light representing an image...

A method is described which frees the user from remembering which application works on which kind of data. In a system that has multiple applications and multiple data types and formats, it is difficult for a user to know which applications work on which types of data. For example, if a user wants to edit a document,...

Plated through holes (PTHs) shorted to power planes or signal lines of multilayer printed circuit (PC) structures, e.g., boards or module substrates, are detected by measuring the short resistance value while heat from an external source is applied to the individual shorted PTH or, alternatively, to a group of PTHs...

A robot controls a multiposition Z-axis actuator through its digital in (DI) and digital out (DO) switches. A robot 1, such as an IBM 7535 or 7540 robot, for example, has a casting 2 attached thereto by screws 3. The casting 2 supports an electric motor 4 having its output shaft connected through a trans mission 5,...

The method electrically measures the centerline overlay of P+ diffusion to isolation in semiconductor devices. This was previously accomplished by means of manual optical measurements. An isolation defined LPNP is the measurement device used which consists of a symmetric lateral PNP with emitter 1 (Fig. 1) and...

A platen for a typewriter or printer has its indexing motor mounted within its hollow interior to increase the available space within the typewriter or printer for other elements. A platen 1 has a motor 2, which may be a small stepper motor or an encoded DC motor, mounted within its hollow interior and driving the...