Abstract: A computer system having low-power operation includes a controller in communication with a first storage device and a second storage device. The controller can be configured to periodically retrieve dynamic frame data from a first storage device during a time period when the computer system is not in an idle state. During a time period when the computer system is in an idle state, the controller is configured to store static frame data into a second storage device, and repeatedly retrieve the static frame data from the second storage device to display an image represented by the static frame data during a time when the computer system continues to be in the idle state.

Abstract: A cabinet has a housing, multiple tracks, multiple drawers, a safety device and a lock assembly. Each track has a sliding rail having a guiding notch and a locking hole. The safety device is mounted in the housing and has a fixed base, a moving base, multiple locking blocks, multiple locking tongues, multiple guiding posts and multiple guiding blocks. The locking blocks are securely attached to the moving base and each have a locking tab. The locking tongues are mounted respectively on the drawers and selectively aligning with the locking tabs on the locking blocks. The guiding posts are mounted on the moving base and locate respectively above the locking blocks. The guiding blocks are slidably and respectively attached to of the tracks. Each guiding block has an inclined face and corresponding to and selectively abutting with a corresponding one of the guiding posts.

Abstract: A cabinet has a housing, multiple tracks, multiple drawers, a safety device and a lock assembly. Each track has a sliding rail having a guiding notch and a locking hole. The safety device is mounted in the housing and has a fixed base, a moving base, multiple guiding blocks, multiple locking blocks, multiple guiding brackets and multiple sliders. The guiding blocks are securely attached to the moving base and each have an inclined face. The locking blocks are securely attached to the moving base and each have a locking tab selectively engaging with a corresponding locking hole. The guiding brackets are attached to the fixed base and each have a guiding slot laterally defined through the guiding bracket. Each slider has a top abutting with a corresponding inclined face and a pin engaging with a corresponding guiding notch.

Abstract: A cabinet has a housing, multiple tracks, multiple drawers, a safety device and a lock assembly. Each track has a sliding rail having a guiding notch and a locking hole. The safety device is mounted in the housing and has a fixed base, a moving base, multiple guiding blocks, multiple locking blocks, multiple guiding brackets and multiple sliders. The guiding blocks are securely attached to the moving base and each have an inclined face. The locking blocks are securely attached to the moving base and each have a locking tab selectively engaging with a corresponding locking hole. The guiding brackets are attached to the fixed base and each have a guiding slot laterally defined through the guiding bracket. Each slider has a top abutting with a corresponding inclined face and a pin engaging with a corresponding guiding notch.

Abstract: An apparatus and method for receiving a continuous time pulse amplitude-modulated passband signal is disclosed. The pulse amplitude modulated signal is periodically sampled by a local clock to generate received samples. A convolution of the received samples and an impulse response function is evaluated at a particular value of a phase difference variable to derive corrected samples. Using a narrow transmission band filter, a periodic signal is derived from the corrected samples. The periodic signal has a period equal to a symbol period of the pulse-amplitude modulated signal. Successive samples in each period of the periodic signal are compared to determine if the corrected samples lag or are ahead of optimal samples. If the corrected samples lag or are ahead of the optimal samples, the phase difference variable used to evaluate the convolution is varied by a fixed discrete stepsize.