Abstract:
Disclosed is a time-to-digital (TDC) converter comprising an analog voltage source. An analog-to-digital converter quantizes two voltage samples in response to receiving a first input signal at a first time t1 and a second input signal at a second time t2. The first and second digital signals are combined to produce a digital signal that represents the difference (t2−t1).
Abstract:
Frequency multipliers having corresponding methods and multifunction radios comprise: N multipliers, wherein N is an integer greater than one; wherein the multipliers are connected in series such that each of the multipliers, except for a first one of the multipliers, is configured to mix a periodic input signal with an output of another respective one of the multipliers; wherein the first one of the multipliers is configured to mix the periodic input signal with the periodic input signal.
Abstract:
A computer system is provided. The computer system comprises system and peripheral hardware devices, a display device and a chip. The display device comprises a display panel and an on-screen display (OSD) control module. The chip comprises a computer system environment information monitoring module, a control connection interface and a control module. The computer system environment information monitoring module monitors computer system environment information according to the system and peripheral hardware devices. The control connection interface is electrically connected to the OSD control module. The control module is electrically connected to the computer system environment information monitoring module and the control connection interface to control the OSD control module through the control connection interface according to the computer system environment information to further control the display function of the display panel.
Abstract:
A transceiver front-end provides an interface between a transmission medium and transmitter, and between a transmission medium and receiver. The transceiver front-end includes a hybrid circuit, a high-pass filter, and a gain stage, that permits the reduction or the complete elimination of buffer amplifiers. Buffer amplifiers can be eliminated because the hybrid circuit and/or the high-pass filter are adapted so that they can be directly connected to each other, without a loss in circuit performance. Furthermore, the high-pass filter and/or the gain stage are also adapted so they can be directly connected. As such, the transceiver front-end can be constructed using all passive components, reducing or eliminating excess heat generation.
Abstract:
A floppy module includes a floppy disk controller (FDC), a control circuit, and a display. The FDC has a first control terminal, a second control terminal, and a plurality of third control terminals. Wherein, the first control terminal and the second control terminal may respectively output a first control signal and a second control signal, and the first and second control signals having the same statuses are used for controlling a floppy disk. The display has a fourth control terminal and a plurality of data terminals respectively coupled to a portion of the third control terminals. Additionally, the control circuit may use the first control signal to replace the second control signal for controlling the floppy disk, and transmit the second control signal to the fourth control terminal such that a status information is shown on the display as the floppy disk being idle.
Abstract:
A thermal protection circuit to protect an electronic device from over-heat comprises a temperature sensor, a hysteresis comparator and a switch circuit. The temperature sensor senses internal temperature of the electronic device and output an internal temperature signal with voltage. The hysteresis comparator outputs a power-off signal when the voltage of the internal temperature signal is lower than a low voltage threshold representing an a determined temperature, or outputs a power-on signal when the voltage of the internal temperature signal is higher than a high voltage threshold representing a restarting temperature. The switch circuit stops transmitting power signals to the electronic device in response to the power-off signal, or continues to transmit the power signals to the electronic device in response to the power-on signal.
Abstract:
Circuitry to remove switches from signal paths in integrated circuit programmable gain attenuators. Programmable gain attenuators and programmable gain amplifiers commonly switch between signal levels using semi-conductor switches. Such switches may introduce non-linearities in the signal. By isolating the switches from the signal path linearity of the PGA can be improved.
Abstract:
Binary indications are converted to an analog representation with significant reduction in ringing at the transitions between successive binary indications and in the period during each binary indication. The binary indications are disposed in a row-and-column matrix to provide a thermometer code. Each stage of the converter includes a decoder and latch arranged so the decoder inputs settle before the latch is set by the clock pulses. The stages are implemented in complementary CMOS. Complementary transistors are biased so one transistor of the pair is driven to the rail while the other transistor of the pair floats. A dummy CMOS transistor is used to balance the number of transistors in the decoder paths.
Abstract:
Circuitry to remove switches from signal paths in integrated circuit programmable gain attenuators. Programmable gain attenuators and programmable gain amplifiers commonly switch between signal levels using semi-conductor switches. Such switches may introduce non-linearities in the signal. By isolating the switches from the signal path linearity of the PGA can be improved.
Abstract:
Circuitry to remove switches from signal paths in integrated circuit programmable gain attenuators. Programmable gain attenuators and programmable gain amplifiers commonly switch between signal levels using semi-conductor switches. Such switches may introduce non-linearities in the signal. By isolating the switches from the signal path linearity of the PGA can be improved.