摘要:
A bookmark memory stick includes a PC board, a flat, elongated insulative holder shell having a recessed accommodation portion accommodating the PC board and a retaining hole disposed near the top end thereof, a metal cover shell surrounding the insulative holder shell and a clip, which has a transverse locating base fitted into a locating notch at the top end of the insulative holder shell, a double-bevelled clamping plate obliquely downwardly extended from the front side of the transverse locating base toward the inside of the metal cover shell and stopped against a inverted T-plate of the insulative holder shell and then curved obliquely outwardly for clamping a sheet member on the inverted T-plate, a back plate extended from the back side of the transverse locating base and inserted into the inner top side of the metal cover shell, and a hook plate obliquely extended from the back plate and engaged into the retaining hole of the insulative holder shell.
摘要:
A circuit includes a locked loop and a phase offset circuit. The locked loop generates first control signals for controlling a first delay in the locked loop. The phase offset circuit delays an input signal by a second delay that is controlled by second control signals to generate a delayed signal. The phase offset circuit generates the second control signals by adjusting the first control signals to increase the accuracy of the delayed signal with respect to a target phase. The second control signals compensate for at least a portion of a change in the second delay that is caused by a variation in at least one of a process, a supply voltage, and a temperature of the circuit.
摘要:
A retractable USB memory stick includes a metal casing having a longitudinal sliding slot, first and second locating holes located on opposing ends of the longitudinal sliding slot and a hook located on the rear side and defining an access gap, a PC board having a USB plug and a memory IC board, and an insulation PC board holder holding the PC board and slidably mounted in the metal casing. The insulation PC board holder has a sliding block supported on a spring strip and inserted into the longitudinal sliding slot of the metal casing, retaining blocks protruded from the sliding block for selectively engaging the first locating hole or second locating hole to lock the insulation PC board holder to the metal casing in extended or received positions, and a latch located on the rear side and movable with the insulation PC board holder to close/open the access gap.
摘要:
A feedback loop circuit includes a phase detector and delay circuits. The phase detector generates an output signal based on a delayed periodic signal. The delay circuits are coupled in a delay chain that delays the delayed periodic signal. Each of the delay circuits comprises variable delay blocks and fixed delay blocks that are coupled to form at least two delay paths for an input signal through the delay circuit to generate a delayed output signal. Delays of the variable delay blocks in the delay circuits vary based on the output signal of the phase detector. Each of the delay circuits reroutes the input signal through a different one of the delay paths to generate the delayed output signal based on the output signal of the phase detector during operation of the feedback loop circuit. Each of the variable delay blocks and the fixed delay blocks is inverting.
摘要:
Circuits and a method for correcting duty cycle distortions in an integrated circuit (IC) are disclosed. The IC includes a splitter circuit that is coupled to receive a clock signal. The clock signal is split into two different clock signals. One of the clock signals is an inverted version of the other. A delay circuit is coupled to each of the clock signals. Each of the delay circuits generates a delayed version of the corresponding clock signal. A corrector circuit is coupled to receive both the delayed versions of the clock signals. The corrector circuit generates a clock output signal with a corrected duty cycle.
摘要:
Methods and circuitry for distributing and synchronizing a divided clock signal in an electronic device are disclosed. In one aspect of an embodiment, a series of registers distributes the divided clock signal and the series of registers is clocked by a full-speed clock signal from which the divided clock signal is derived. In another aspect, the divided clock signal and the full-speed clock signal are distributed to IO circuitry of the electronic device. In yet another aspect, the divided clock signal is also distributed to circuitry in a core of the electronic device.
摘要:
A USB flash disk is disclosed as being inserted therein with an internal structure composed of a printed circuit board, a metallic tray, a lower insulation seat and a clamping strip unit etc. for completing the USB flash disk.
摘要:
An input buffer circuit has a plurality of selectively enabled differential amplifier circuits, where each differential amplifier is configured for compatibility with a particular differential I/O standard and its corresponding input operating range. For example, the input buffer may have two differential amplifiers suitable for receiving LVDS differential input signals over a wide input operating range, and another differential amplifier suitable for receiving the PCML differential input signals. One or more control signals are provided to the input buffer, e.g., programmably, to selectively enable the required differential amplifier(s) for a given I/O standard.