Abstract: A spread spectrum communications system for use over a communications channel, including a transmitter-generic-chip-code generator, a transmitter-message-chip-code generator, an EXCLUSIVE-OR gate, a combiner, a transmitter, a receiver-generic-chip-code generator, a generic mixer, a generic-bandpass filter, a receiver-message-chip-code generator, a message mixer, a message-bandpass filter, and a synchronous detector. The transmitter-generic-chip-code generator generates a generic-chip-code signal and the transmitter-message-chip-code generator generates a message-chip-code signal. The EXCLUSIVE-OR gate spread-spectrum processes message data with the message-chip-code signal to generate a spread-spectrum signal. The combiner combines the generic-chip-code signal with the spread-spectrum signal. The transmitter transmits the combined generic-chip-code signal and spread-spectrum signal, on a carrier signal over the communications channel as a spread-spectrum-communications signal.

Abstract: A spread-spectrum transmitter and receiver using code division multiple access with time division multiple access technology for spread-spectrum communications. At a base station, a spread-spectrum transmitter includes a multiplexer for time multiplexing a synchronization-code signal and a plurality of data signals, which may be encoded as a plurality-encoded data signals, to generate a time-multiplexed signal. A chip-code generator generates a chip-code signal which is modulo added with the time-multiplexed signal by an EXCLUSIVE-OR gate to generate a spread-spectrum-time-multiplexed signal. A transmitter transmits the spread-spectrum-time-multiplexed signal over a communications channel. A spread-spectrum receiver at the base station processes a plurality of spread-spectrum signals, received from a plurality of remote units in as time division sequence of spread-spectrum signals, using a despreader circuit to generate a time-division signal.

Abstract: A spread spectrum receiver correlator for a with filters matched to transmitter chip codes are implemented in digital circuits along with a digital circuit for acquisition and tracking of the arrival times of the chip codes. The digital circuit implementations are used for the noncoherent demodulation of pulse position spread spectrum modulation signals where the pulse is a carrier modulator by a chip code and for the noncoherent demodulation of multiple chip code modulation signals where each information symbol is represented by one of several chip codes modulating a carrier.

Abstract: A dice simulator for simulating dice rolling or the like utilizes operator selectable probability weighting to cause quasi-random rolling results to be biased in accordance with the selected probability weighing.

Abstract: A method for establishing and communicating synchronous, code division multiple access communications between a base station and a plurality of remote units. A plurality of remote-communications signals which have spread-spectrum modulation are transmitted from the plurality of remote units and arrive simultaneously at the base station. The method includes transmitting repetitively from the base station a access signal having spread-spectrum modulation and receiving the access signal at an accessing-remote unit. The accessing-remote unit transmits an echo signal which has spread-spectrum modulation. The echo signal is received at the base station and a time delay is measured between the access signal and the received echo signal. A protocol signal which has spread-spectrum modulation is transmitted to the accessing-remote unit, with the protocol signal communicating a chip codeword and the time delay measured at the base station.

Abstract: A spread spectrum CDMA communications system for communicating message data between a plurality of users to a plurality of PCN units. The spread spectrum communications system is located within a same geographical region as occupied by a pre-existing system such as a cellular telephone system or microwave system. The spread spectrum CDMA communications system can operate without causing undue interference to the cellular telephone system or microwave system and the cellular telephone system or microwave system can operate without causing significant interference, less than 1% total users affected, to the PCN system. The spread spectrum CDMA communications system includes a plurality of PCN-base stations and a plurality of PCN units.

Abstract: A spread spectrum communications system for use over a communications channel, including a transmitter-generic-chip-code generator, a transmitter-message-chip-code generator, an EXCLUSIVE-OR gate, a combiner, a transmitter, a receiver-generic-chip-code generator, a receiver-generic mixer, a generic-bandpass filter, a receiver-message-chip-code generator, a receiver-message mixer, a message-bandpass filter, and a synchronous detector. The transmitter-generic-chip-code generator generates a generic-chip-code signal and the transmitter-message-chip-code generator generates a message-chip-code signal. The EXCLUSIVE-OR gate spread-spectrum processes message data with the message-chip-code signal to generate a spread-spectrum signal. The combiner combines the generic-chip-code signal with the spread-spectrum-processed signal. The transmitter transmits the combined generic-chip-code signal and spread-spectrum signal, on a carrier signal over the communications channel as a spread-spectrum-communications signal.

Abstract: A method and system for displaying a function in two dimensions where the function is made up of numerous independent variables and at least one dependent variable. A new independent variable value can be defined having values which correspond to the multiple dependent variables. The variable values are read into a computer and the independent variables are then ranked by the user from fastest- to slowest-running variable. Each dependent variable corresponding to the new independent variable is plotted along the Y-axis. The independent variable values are plotted along the X-axis in a hierarchical manner. The hierarchical manner involves a nesting of fastest-running variables within slower-running variables. Rectangles are then drawn to correspond to each variable value. Each rectangle horizontally encloses the faster-running variables associated with it.

Abstract: A dynamic capacity allocation spread spectrum CDMA communications system for overlaying, at least in part, geographically and in frequency a radio-relay system. A first receiver, located near the relay receiver of the radio-relay system, measures a first power level within the relay bandwidth of the radio-relay system. A second receiver, located near the relay receiver, measures a second power level outside the relay bandwidth of the radio-relay system. The first power level is compared to a predetermined threshold. A ratio signal is generated from the first power level and the second power level. When the first power level exceeds the predetermined threshold, the ratio signal is used to regulate the power level and dynamically allocate the capacity transmitted from each spread-spectrum-base station.

Abstract: A keyless adjustable driver, attachable to a chuck on a drill, having a plurality of adjustable settings for holding and driving bolts with flat sides. The keyless adjustable driver includes a cylindrical body having an axial hole, a central shaft, passing through the axial hole, for attaching the driver to the chuck, a plurality of gripper arms pivotally mounted on the cylinder body for pivoting and holding the flat sides of the bolts in response to movement of the head of the central shaft engaging the gripper arms, and a wheel having a threaded axial hole for engaging screw-like threads on the central shaft to move the central shaft to close and lock the gripper arms to hold the bolt as the device rotates on the drill.

Abstract: An educational device employing a game situation to teach preventive health care concepts to the family. The educational device generally includes a playing board apparatus; two playing surfaces, with each playing surface having a plurality of locations defining a travel path; a plurality of playing pieces; health question-answer cards; and a chance device for determining the advancement of the playing pieces along the travel path. Each playing surface includes playing locations for answering health problem questions, and the first playing surface also includes preventive health care locations, water boy locations, and game direction locations for use in a first version of the health game with a match card, score point cards, penalty point cards, preventive health care certificates, and water boy locations. The Health Game simulates a real-to-life situation where players are confronted with health questions and health problems.

Abstract: A processor chip for adding a first integer having a plurality of groups of bits to a second integer having a plurality of groups of bits modulo a fourth integer having n-bits. The first integer plus the second integer equals a third integer. The processor chip includes a first register for storing the first integer, a second register for storing the second integer, and feedback register for storing a feedback number. The feedback number is the two's complement of the fourth integer. A plurality of full adders is coupled to the first register and the second register, and adds each group of bits of the first integer to the corresponding group of bits of the second integer, to generate the third integer. The bits of each group are added asynchronously during a time period. Sequentially, a second group of bits of the first integer are added to the corresponding second group of bits of the second integer.

Abstract: A device for supporting an infant's feeding bottle including a bottle holder, a first flexible rod optionally, a second flexible rod, a clamp member and a stand member. The feeding bottle may be selected from a plurality of feeding bottles having a range of different diameters. The device may be used while feeding an infant in a seat placed on a surface. The bottle holder has a flexible member for wrapping around the feeding bottle. The flexible member has VELCRO material, a buckle or the like for securing the feeding bottle to the bottle holder. The first flexible rod is attached to the bottle holder and the stand member. The second flexible rod may be pivotally attached to the first flexible rod. The clamp member is attached to the second flexible rod for clamping to the seat.

Abstract: A chordal keyboard method and apparatus for generating a key code using a plurality of keys coupled to a controller with a first set of registers and a second set of registers. A user depresses at least one of the plurality of keys. The controller detects, which of the plurality of keys are in a depressed position and which of the plurality of keys are released from the depressed position. The controller sets in the first set of registers and sets in the second set of registers, bit locations of respective depressed keys, and clears in the second set of registers bit locations of respective released keys. When the controller detects that all of the plurality of keys are in a released position, a key code is generated which corresponds to bit locations set in the first set of registers. After generating the key code, the controller clears the first set of registers.

Abstract: A spread-spectrum-conference-calling receiver, for use over a communications channel. At each of a plurality of spread-spectrum transmitters, a transmitter-generic-chip-code generator generates a generic-chip-code signal and a transmitter-message-chip-code generator generates a message-chip-code signal. An EXCLUSIVE-OR gate spread-spectrum processes message data with the message-chip-code signal to generate a spread-spectrum signal. The combiner combines the generic-chip-code signal and the spread-spectrum-processed signal. A plurality of receiver-generic-chip-code generators generate a plurality of replicas of the generic-chip-code signal. Each receiver-generic mixer recovers a carrier signal from one of the plurality of received spread-spectrum-communications signals. A plurality of receiver-message-chip-code generators generate a plurality of replica of the message-chip-code signals.

Abstract: An apparatus for controlling handoff in a spread-spectrum-CDMA-communications system, of radio devices moving from a cell having a base station which transmits a first spread-spectrum-communications signal with a first generic-chip-code signal, toward a different cell having a base station for transmitting a second spread-spectrum-communications signal with a second generic-chip-code signal. A radio device includes a PCN antenna, a first matched filter having an impulse response matched to the first generic-chip-code signal and a first detector for detecting the first generic-chip-code signal embedded in the first spread-spectrum-communications signal. A second matched filter has an impulse response matched to the second generic-chip-code signal and a second detector detects the second generic-chip-code signal embedded in the second spread-spectrum-communications signal. A comparator generates a comparison signal by comparing the first detected signal with the second detected signal.

Abstract: An in-band framing encoder having a data input and a data output, for continuously operating a CPE-framed-data signal having CPE-framing data and payload data. The CPE-framed-data signal includes a plurality of time-division-multiplexed frames of payload data achieving channel integrity with CPE-framing data. The encoder comprises a framing-data detector coupled to the data input for detecting the CPE-framing data of CPE-framed-data signal, and a framing-data remover removes the CPE-framing data from the CPE-framed-data signal. A unique-bit-pattern generator generates a unique-bit-pattern sequence. A multiplexer multiplexes the unique-bit-pattern sequence with payload data over the plurality of time-division-multiplexed frames of payload data, thereby generating an in-band-framed-data signal having the unique-bit pattern sequence multiplexed with the payload data.

Abstract: A high-capacity-spread-spectrum transmitter and receiver, for use over a communications channel. A demultiplexer demultiplexes message data into a plurality of demultiplexed-data signals. A transmitter-generic-chip-code generator generates a generic-chip-code signal and a plurality of transmitter-message-chip-code generators generate a plurality of message-chip-code signals which are "near-orthogonal" over a demultiplexed data bit. A plurality of EXCLUSIVE-OR gates, spread-spectrum processes the plurality of demultiplexed-data signals with the plurality of message-chip-code signals to generate a plurality of spread-spectrum signals. A combiner combines the generic-chip-code signal and the plurality of spread-spectrum-processed signals. A receiver-generic-chip-code generator generates a replica of the generic-chip-code signal. A generic mixer recovers the carrier signal from the spread-spectrum-communications signal.

Abstract: A spread spectrum receiver with filters matched to transmitter chip codes are implemented in digital circuits along with a digital circuit for acquisition and tracking of the arrival times of the chip codes. The digital circuit implementations are used for the noncoherent demodulation of pulse position spread spectrum modulation signals where the pulse is a carrier modulator by a chip code and for the noncoherent demodulation of multiple chip code modulation signals where each information symbol is represented by one of several chip codes modulating a carrier.

Abstract: A method for handling off a transitioning-remote unit from a first microcell having a first base station communicating with a first plurality of remote units, to a second microcell having a second base station communicating with a second plurality of remote units. The first base station communicates to the first plurality of remote units using synchronous, code division multiple access at a first carrier frequency and a first power level. The second base station communicates simultaneously to the second plurality of remote units using synchronous, code division multiple access at a second carrier frequency and a second power level. The second power level is typically greater than the first power level. While the transitioning-remote unit transitions from first microcell to the second microcell, the second base station detects a power level of the remote-communications signal, exceeding a predetermined threshold, transmitted from the transitioning-mobile unit.