Abstract: Presented herein is a system and method for wireless power transmission (WPT) charging of a battery of a stationary electric vehicle (EV). The system comprises a plurality of autonomous mobile platforms adapted to charge the battery, wherein: the autonomous mobile platforms are configured to fit under the EV; and one or more autonomous mobile platforms are assigned in succession by the central control system to fully supply the charging requirements of the EV. Also presented is a method for maximizing inductive WPT charging of a battery of a stationary EV.

Abstract: A method for performing melody detection comprises interpreting the global perceptual effect of all the sounds at once, to determine what is the melody actually perceived by the human ear, and providing a music sheet or a text printout including a time sequence of single notes describing that melody.

Abstract: A method for performing melody detection comprises interpreting the global perceptual effect of all the sounds at once, to determine what is the melody actually perceived by the human ear, and providing a music sheet or a text printout including a time sequence of single notes describing that melody.

Abstract: A method of estimating the distance between a first wireless communication terminal and a second wireless communication terminal includes: receiving a signal at the first terminal, processing the received signal including performing a demodulation operation to produce a demodulated signal; and resolving the demodulated signal into a plurality of components corresponding to different path length components included in the received signal; identifying which of the resolved components corresponds to a shortest path length; and for the identified component, computing a time of travel from the second terminal to the first terminal.

Abstract: A frequency synthesiser circuit for use in wireless communications including a phase locked loop including a VCO (voltage controlled oscillator), wherein the synthesiser circuit includes a further oscillator which in operation is a free running oscillator at a frequency higher than the VCO and a mixer connected to receive input signals from the VCO and from the further oscillator and to combine such signals. Also described is a wireless communications transmitter or receiver incorporating the frequency synthesiser circuit.

Abstract: A method of estimating the distance between a first wireless communication terminal and a second wireless communication terminal includes: receiving a signal at the first terminal, processing the received signal including performing a demodulation operation to produce a demodulated signal; and resolving the demodulated signal into a plurality of components corresponding to different path length components included in the received signal; identifying which of the resolved components corresponds to a shortest path length; and for the identified component, computing a time of travel from the second terminal to the first terminal.

Abstract: A demodulator (100), includes an input signal path (101) for delivering an RF input signal, a local oscillator (111), connected to the input signal path a first mixer (107) for mixing an output reference signal from the local oscillator with an RF input signal to produce an in-phase component of the input received signal, a phase shifter (113), connected to the input signal path a second mixer (109) for mixing an output reference signal from the local oscillator via the phase shifter with the RF input signal to produce a quadrature component of the RF input signal; and an output signal processor (119) for producing an output demodulated information signal by producing a function of the in-phase and quadrature components; and wherein the demodulator is periodically operable in a quadrature phase error determination mode.

Abstract: An automatic gain control apparatus (106) and method for a radiotelephone receiver employs stored inverse transfer function data (400) of the radiotelephone receiver and a gain estimation circuit (200). The gain estimation circuit (200) estimates the input power of received signal (103) and determines a required gain based on a nonlinear portion of the inverse transfer function data (400) of the radiotelephone receiver to provide an improved dynamic range of the receiver. The apparatus and method performs convergence within one iteration to perform fast gain control. In addition, if desired, a DC offset compensation circuit, such as a feedforward DC offset compensation circuit (202), compensates the digital representation of the input signal for use by the gain estimation circuit (200).

Abstract: A radio is described having a synthesizer (17) and a VCO (18). Each of the synthesizer and the VCO has a connection to a ground plane (13) of the radio. The ground plane connection of the VCO has a first capacitor (43) and a further ground connection (40) is provided between the VCO and the synthesizer for providing a common baseband ground for the VCO and the synthesizer, isolated with respect to baseband frequency currents in the ground plane of the radio. The arrangement addresses problems arising in radios having power amplifiers with severe output amplifier variations, such as are found in linear radios.

Abstract: A two-way radio having a receiver (20) for receiving a radio signal including a voice message, a storage element (45) coupled to the receiver for storing the voice message received, a voice input device (49) for inputting voice messages, a user-actuable selection input (15) for receiving a user input to change between a transmit mode and a repeat mode and a transmitter (21) selectively coupled to the storage element and the voice input device for selectively transmitting input voice messages when in the transmit mode and retransmitting the stored voice message when in the repeat mode. A detection circuit (47) detects the radio signal and a control circuit (50) coupled to the receiver, the transmitter and the detection circuit operates in the repeat mode for activating the transmitter (21) to retransmit the voice message when the detection circuit (47) detects that the radio signal ends.