摘要:
A force/displacement touch device, this invention employs a base-plane 32 and flexible mounting material to suspend, or “float,” a non-rigidly mounted touch-plane 12, and uses sensors at each mounting point 22 to measure Z-axis deflection of the floating touch-plane 12. The system adapts existing planes in typical LCD assemblies to implement touch screens. This floating touch detection system provides an accurate, sensitive, compact and low-cost solution. It mitigates XY friction to improve detection of Z-forces. This approach provides latitude in locating sensors 34, allows for additional mid-plane sensors, enables greater accuracy and resolution, and adds features such as “multi-touch” sensitivity. This touch system is defined as a unique and novel ‘floating’ co-planar assembly of a touch-plane 12 to a base-plane 32, which uses a flexible material 22 or medium to define a consistent resting air gap, and then senses and measures any deflection from the co-planar resting position, using any among a broad variety of sensor types.
摘要:
Electronic circuit apparatus in the form of a transaction terminal and including a removable circuit component in the form of a portable memory cartridge. The terminal has a housing with a wall defining an opening for inserting the removable circuit component. A switch is mounted within the housing means substantially in the vicinity of the opening and is connected between a source of electric power and the removable circuit component to control application of power to the removable circuit component. A carrier arrangement carries the removable circuit component between a connected position within the housing and a disconnected position for removal from the housing through the opening. The carrier including a switch actuator and a cooperative interlock means. The switch actuator operates the switch to be ON and simultaneously locks the carrier within the housing. The switch actuator also functions to turn the switch OFF and simultaneously unlock the carrier for removal from the housing.
摘要:
A structure for mounting a liquid crystal display (LCD) in a portable computer and a method for making the mounting structure are described. The mounting structure absorbs the shocks associated with day-to-day handling of the portable computer including occasional dropping or compressing and thereby protects the LCD from damage. The mounting structure consists of resilient shock absorbers mounted along the edges or at the corners of the LCD and glass assembly which are sealed with the LCD glass and circuitry behind a transparent overlay while under compression. The sealed mounting structure acts as a suspension system which allows the LCD glass to float along a single plane only. Any shocks due to dropping, compressing, bending or deflecting are absorbed by the shock absorbers and the LCD remains unaffected. The mounting structure may be evacuated and hermetically sealed, which provides protection to the LCD glass and circuitry from humidity, dust and other contaminates as well.
摘要:
In a tape cartridge of the type wherein a motor-driven endless belt bears against the supply and take-up rolls of tape to move the tape, and wherein the belt extends about a pair of guide rollers that hold it in tension, the improvement of a drag washer for applying drag to the guide rollers to assure tension in the belt. Each drag washer is bowed, with a central portion having a hole receiving the roller shaft and bearing against an end of the roller, and with a pair of arms bearing against the cartridge frame.
摘要:
The present invention relates to a portable computer security device that includes a housing with an integrated magnifying lens. The portable computer security device is relatively small yet includes an LCD which is readily observed by a user of the portable security device. The portable computer security device includes a housing that incorporates a magnifying lens. The portable computer security device further includes a LCD that is positioned within the housing. The LCD is aligned with the magnifying lens to permit observation of the LCD through the magnifying lens. The portable computer security device further includes an integrated circuit that is positioned within the housing. The integrated circuit generates random numbers for display on the LCD such that the random numbers are used to provide access to a computer system.
摘要:
The present invention relates to a portable computer security device that includes a protective mounting structure for an LCD. The portable computer security device includes a cover and a base and further includes an integrated circuit and a LCD assembly that are each positioned between the cover and the base. The LCD assembly is electrically connected to the integrated circuit. The integrated circuit generates random numbers for display on the LCD assembly such that the random numbers may be used to provide access to a computer system. In addition, the LCD assembly is aligned with an opening in the cover to permit observation of the LCD assembly through the opening in the cover. The portable computer security device further includes a damping member. The damping member is positioned between the LCD assembly and the cover to reduce shock and vibration forces that are generated on the LCD assembly.
摘要:
Lead frames for integrated circuit packaging are partly fabricated using laser machining to form the very small diameter (0.005 to 0.010 diameter) holes in the lead frames which are later used for epoxy adhesive penetration. A high power Nd:YAG laser provides a laser beam which is moved and focused by a control unit onto the surface of a continuous stock strip in order is to drill the epoxy holes at the desired locations. A similar apparatus, but using a copper vapor laser, can trim very fine pitch (0.005 inch) leads for the lead frames. The remaining parts of the lead frames, which involve larger sized elements, are formed conventionally by using stamping or etching. By controlling the laser operating parameters in terms of laser power, pulse duration and pulse frequency and by control of the location of the laser beam by deflecting galvanometers, very precise cutting and drilling can be accomplished, with accuracy down to 0.00005 inch or less. Tooling costs are thereby reduced and in addition new types of lead frames with very closely spaced lead tips can be fabricated that cannot be fabricated using conventional processes.
摘要:
A method for mounting a liquid crystal (LCD) display in a portable computer. In one embodiment, the method includes the steps of mounting resilient shock mounts on the edges of the LCD assembly, installing the LCD assembly and shock mounts into a housing, placing a horizontal plate into the housing over the LCD assembly and shock mounts (wherein the horizontal plate covers the shock mounts), and joining the horizontal plate to the housing to form the mounting structure. The shock mounts are compressed during the joining step. The LCD assembly is supported by the forces exerted by the housing and horizontal plate against the shock mounts, and is not directly connected to the housing or the horizontal plate.
摘要:
A liquid crystal mounting structure including resilient shock mounts on opposing edges of the display, each shock mount having a slot for receiving an edge of the display. The assembly is held in a 3 dimensional frame made of a plate and housing.
摘要:
A point of sale terminal having a reader assembly for reading a data card having data stored on at least one data track thereon. The terminal includes a housing defining a guide slot location for the data carrier and a transducer for detecting data stored on the data track. A removable guide element is mounted to the housing at the data carrier slot location. This guide element has at least a bottom wall portion defining a bottom guide surface of a guide slot for the data card and one major side wall portion defining one side guide surface of a guide slot. An access window is formed in the major side wall portion. A mounting arrangement mounts the transducer at a prearranged location within the access window for accurate detection of data stored on the data track as the data card is manually swiped through the guide slot.