Abstract:
A variable capacitance circuit on an integrated circuit comprises a MOS transistor, and a capacitance multiplier connected to one end of a channel of the MOS device. A MOS device is formed in series with an inductance, and a capacitance multiplier is formed to be connected to a node between the MOS device and the inductance.
Abstract:
Disclosed is a circuit for adjusting a voltage supplied to an IC by a power supply circuit that produces a regulated-output voltage based on an output-control signal generated by a resistive voltage divider. The circuit includes a PVT detector configured to generate an interface control signal and an interface circuit (i) connected to PVT detector and to the resistive voltage divider and (ii) configured to adjust its resistance in response to the interface control signal. Adjusting the resistance of the interface circuit causes the voltage of the output-control signal to be adjusted, thus causing the power supply circuit to adjust the regulated output voltage.
Abstract:
Disclosed is a circuit that adjusts a characteristic of a signal transmitted from a transmitter to a receiver over a communication channel (e.g., a wire, a backplane, etc.). The circuit includes a latch that receives the signal at a predetermined point in the circuit and samples a voltage of the signal many times after a threshold voltage is applied to the latch. The circuit also includes a processor that determines the characteristic of the signal when the sampled voltages indicate a transition point and that adjusts the threshold voltage when the sampled voltages do not indicate a transition point. The processor adjusts the characteristic of the signal by adjusting at least one of a current and a voltage of the transmitter when the characteristic of the signal is outside a predetermined range.
Abstract:
In described embodiments, elements of a wireless home network employ learned power security for the network. An access point, router, or other wireless base station emits and receives signals having corresponding signal strengths. Wireless devices coupled to the base station through a radio link are moved through the home network at boundary points of the home and the signal strength is measured at each device and communicated to the base station. Based on the signal strength information from the emitted signals measured at the boundary points and/or from measured signal strength information of signals received from the boundary points, the base station determines a network secure area. The base station declines permission of devices attempting to use or join the home network that exhibit signal strength characteristics less than boundary values for the network secure area.
Abstract:
In described embodiments, a point of sale system, such as a cash register, provides for translation from standard language to desired native language on a receipt. Translation might be initiated through user (e.g., purchaser) input, manually or from a credit card, for example, and translation is accomplished through a database accessed by the point of sale system. Consequently, the point of sale system provides at least one receipt to the purchaser that identifies purchases as line item descriptions, and, in some cases, the price paid for each line item, in the purchaser's native language that might be used, for example, to accurately prepare vouchers.
Abstract:
Disclosed is a circuit for adjusting a voltage supplied to an IC by a power supply. The circuit includes a PVT detector configured to generate a control signal and an adjustable resistance device configured to adjust its resistance in response to the control signal.
Abstract:
An apparatus and method for reducing variations in a supply voltage signal. The voltage signal which powers a circuit is regulated by adding or removing a series of redundant loads to the circuit. The redundant loads are normally not connected to the circuit. However, when one of the loads of the circuit is switched out of the circuit, one or more of the redundant loads are switched into the circuit, and then removed gradually from the circuit. When one of the loads of the circuit is to be switched into the circuit, one or more of the redundant loads are switched into the circuit first, then switched out of the circuit when the load is switched in. Thus, the voltage supply sees almost the same load during a turn-on and turn-off transition period, and variations in the voltage signal are reduced.
Abstract:
An integrated circuit comprising a balanced differential amplifier. The balanced differential amplifier has a first single-ended differential amplifier coupled at a first negative differential input terminal to a first input signal through a feedback network also coupled to an output terminal of the first amplifier. The first amplifier is also coupled at a first positive differential input terminal to a second input signal through a first resistor and to a reference voltage. The balanced differential amplifier also has a second single-ended differential amplifier coupled at a second negative differential input terminal to the second input signal through a second feedback network also coupled to an output terminal of the second amplifier. The second amplifier is also coupled at a second positive differential input terminal to the first input signal through a second resistor and to the reference voltage.
Abstract:
A memory circuit includes an operational memory and a monitor circuit comprising a circuit element in the operational memory and/or a circuit element substantially identical to a corresponding circuit element in the operational memory. The monitor circuit is operative to measure at least one functional characteristic of the operational memory. A control circuit coupled to the monitor circuit is operative to generate a control signal which varies as a function of the measured characteristic of the operational memory. The memory circuit further includes a programmable voltage source coupled to the operational memory which is operative to generate at least a voltage and/or a current supplied to at least a portion of the operational memory which varies as a function of the control signal.
Abstract:
In described embodiments, a data collection device receives signals from one or more patient monitoring devices, the signals representing patient data and other vital signs measured at a patient. The data collection device employs statistical quality algorithms to track irregular behavior and out-of-bound events, the behavior and events either being pre-set, adaptively set, or otherwise defined within pre-determined limits. The data collection device communicates alerting signals to a caregiver's handheld device when the irregular behavior and out-of-bound events occur. The alerting signals contain information related to the patient data, irregular behavior and out-of-bound events, thereby allowing a caregiver to take appropriate action.