Abstract: A wireless coordinate reader composed of:a sense line plate having a plurality of excitation lines and a plurality of sense lines arranged thereon; a coordinate indicator including a resonant circuit having a resonance frequency in proximity to the frequency of an excitation signal and composed of a coil and a first capacitor, and a switch circuit connected in parallel with the resonant circuit and composed of at least one series circuit of a switch and a resistor, and a second capacitor connected in series with one end of the the circuit; an amplification detection circuit for detecting the magnitude of an induction signal which is induced on a selected sense line when the excitation signal is applied to a selected excitation line and the coordinate indicator is placed above the sense line plate in the vicinity of the selected lines and for outputting an amplitude signal representative of the magnitude of the induction signal; a phase detection circuit for receiving a signal corresponding in phase to the exc

Abstract: A system for on-board timing for a vehicle traversing a predetermined course having at least one marker or indicator such as a start/finish line placed on or adjacent the track. A sensor carried on the vehicle senses when the vehicle passes the marker and provides an electrical signal for actuating an on-board timer and display device. A timing circuit is activated as the vehicle passes a predetermined point (marker) the first and subsequent times. The display device displays the time it took to traverse the prior lap while the timing system times and records the time it is taking to traverse the lap being traversed so that this recorded time can be displayed during the following lap. This sequence of operation continues for each of the laps the vehicle traverses.

Abstract: In a method and apparatus for assembling text in ideographic language characters, a computer processing apparatus is provided, which comprises a central processing unit to which are connected a program storage unit, a character storage unit, a display unit and a printer. The character storage unit is searched by entering through input entry keys of a keyboard search criteria including the entered ideographic character stroke-type categories and the order in which the character stroke-type categories are entered through the input entry keys, whereby, upon entry of the search criteria, data relevant to the graphic representation of the ideographic character or data relevant to the graphic representations of a plurality of the ideographic characters which meet the search criteria, is retrieved from the program storage unit and the graphic representations are displayed by the display unit.

Abstract: A position sensor is provided which incorporates the first and second magnetic members which are attached to an object whose position is to be determined. First and second magnetic sensors are disposed at positions in association with the two magnetic members. As the object moves along a predetermined path, the first and second magnetic members dispose a predetermined amount of magnetic material in the zones of the two sensors. By measuring the changing impedance of the winding of one of the sensors and comparing that value to the impedance of the winding of the other sensor, corrections can be made to determine the position of the object notwithstanding the fact that external effects may have changed the conditions under which the measurements are being taken. For example, gaps between the magnetic members and the sensors can possibly change from one time to another or the ambient temperature surrounding the sensors and the magnetic members could have changed.

Abstract: There is disclosed a control system for use, for example, in facility management which controls an environmental parameter to maintain the parameter at a given set point. A PID Controller is coupled to a remote sensor for generating a feedback signal responsive to the parameter level sensed by the remote sensor. The PID Controller is responsive to being coupled to a field device for providing the field device with an automatic control signal having a level derived from the sum of integral, derivative, and proportional actions to the feedback or error signal to place the field device under automatic control, and is responsive to being decoupled from the field device when the field device is under manual control for either terminating the generation of the automatic control signal or providing an estimate of a manual control signal.

Abstract: The monitoring and control system of the present invention provides a distributed intelligence, data acquisition and control system which collects and analyzes large amounts of data representing power usage from a power distribution substation. The system also provides the capability of various control functions for the substation. The system provides communications capabilities between local devices and also with a remote computer. The system provides real time monitoring of power usage and real time control of various functions in the substation.

Abstract: Apparatus for use in a glider for indicating the rate of vertical air mass movement. The apparatus includes sensing means for detecting both glider airspeed and acceleration orthogonal to the plane of the wings. This information is used to modify the output display of a conventional variometer to eliminate the effects of drag.

Abstract: In the tactile effect switch and a keyboard using such a switch, the tactile effect is obtained by combining a snap acting switch and the deformation of a stud, axially deformable under compression, which is integrally formed on a membrane made from a resilient material disposed on a support plate and which provides a resilient connection between a key and the switch in the manner of a pusher.

Abstract: An analog and digital data-gathering system where the data gathering remote device or sequencer units are serially connected such that initially only the device closest to a control unit is powered and other data-gathering devices in the system are sequentially switched into circuit as each such remote device or sequencer unit responds to polling signals from the control unit. The system initially measures the signal from the wiring to a remote device or sequencer unit without the device being activated in order to determine the noise level present in the circuit wiring. The corresponding remote device is then activated by being interrogated or polled after that noise level has been determined.

Abstract: A function key guide and template (10) having a template (30) and function key guide (28) removably attached together by breakaway connectors (32) for use on a keyboard (12). The connectors (32) have preformed breaking points (66) in their first ends (62) and second ends (64) to facilitate manual separation of the connectors (32) from the template (30) and the guide (28). With the connectors (32) remaining attached to either of the template (30) or the guide (28), the connectors (32) facilitate in holding the template (30) and/or the guide (28) in alignment with the function keys (22) on the keyboard (12). The connectors (32) may also be completely removed to permit use of the guide (28) and/or the template (30) with nonconforming keyboard configurations. Ideally the guide (28) is formed of left and right halves (38 and 40) and the template (30) is formed of left and right halves (34 and 36) to enable folding of the function key guide and template (10) for storage and transportation.

Abstract: Interface circuits for electromagnetic position transducers are provided to reduce the effects of capacitive coupling occurring in the conductive cabling between the position transducers and the associated interfaces located remotely therefrom. Capacitive coupling of excitation signals to the transducer output signals result in error signals appearing as cyclic error in measured positions. The magnitude of the coupled signals are substantially reduced by providing excitation signals symmetrical with respect to ground. The magnitude of the coupled signals are also reduced by presenting equal impedances relative to ground to the output signal return and signal paths. By reducing the effects of capacitively coupled signals, conducting cables for the excitation signals and the transducer output signals may be incorporated in a single shielded cable.

Abstract: A humidity and temperature resistant apparatus for determining the orientation of a rotatable meter hand relative to a dial spaced apart from a meter hand that creates and depletes a charge between a center electrode, a meter hand, and an outer electrode ( a pad) very rapidly to transport electrons through a resistor capacitor combination, attached to a positive power supply, whereby the average current drawn through the resistor capacitor combination creates a voltage across the resistor capacitor combination that corresponds proportionally to the magnitude of the capacitance being measured.

Abstract: A keypad apparatus for a radio telephone has the keypad circuit (200) inked onto the lightpipe (105), thereby, allowing freedom in designing the shape of the keypad (103) and reducing the amount of circuitry required on the main circuit board (109) contained within the housing (107) of the radiotelephone.

Abstract: A telemetric measuring device for measuring physical conditions of machinery having a periodically moving part. The device generates its own power with power generator that uses the periodic motion of the machinery to move a reciprocator slug inside a coil, and thereby opening and closing a magnetic circuit and generating a continuous alternating current. This current powers a transmitter that receives output from a multi-channel switch for a number of sensors. The transmitter delivers a radio frequency signal, whose frequency is a function of the condition being measured.

Abstract: An inductive-type rotary encoder includes a stator having at least one conductive pattern on one side thereof, and a rotor having another conductive pattern on one side thereof which faces the at least one conductive pattern of the stator. The conductive patterns are inductively coupled to one another so as to generate an output signal indicative of the angular position of the rotor relative to the stator. In order to reduce the overall size and number of parts required, the circuitry for energizing the stator conductive pattern(s) and for generating the output signal can be provided on a printed circuit board, the opposite side of which contains the at least one stator conductive pattern.

Abstract: A keyboard having the ability to predictively display different characters in association with its various keys within a variety of predefined character set layouts, based upon either the character preceeding an insertion point in a corresponding text field on a display or the last character entered from the keyboard is disclosed. Although each key of the keyboard is capable of displaying numerous different characters, each key represents only one character at a time and each character is displayed at only one key location. The user can also manually change character set layouts. When a user selects a particular key or selects an insertion point within the text field, all keys are updated to display a character set layout that corresponds to the set of characters from which the user would be most likely to want to select a character from next, based upon the frequency of that particular character combination being used in either a particular language or application.