Abstract: A die stack of an integrated circuit includes a plurality of dies. Each die in the die stack includes a phase lock loop (PLL). The PLLs in each of the dies share a loop filter and other corresponding circuits.

Abstract: A lock detector for a PLL circuit includes a first signal counting circuit, a second signal counting circuit, a comparator, and a lock status unit. The first signal counting circuit is configured to define a plurality of observation periods according to a first oscillating signal and a predetermined cycle value. The second signal counting circuit is configured to determine a maximum counter value according to a second oscillating signal within each of the observation periods, and the second oscillating signal is generated in relation to the first oscillating signal. The comparator is configured to determine, for each of the observation periods, whether the maximum counter value equals the predetermined cycle value. The lock status unit is configured to generate a lock signal based on the maximum counter value being equal to the predetermined cycle value for a predetermined number of consecutive ones of the observation periods.

Abstract: A radio frequency IC tag is provided which is excellent in weatherability, dustproofness, waterproofness, and static protection and capable of making a communication distance long even though each antenna section is made small in configuration. A first antenna equipped with an IC chip is formed on an upper surface of a first spacer. A second antenna is formed on a lower surface of a top cover. A second spacer is shaped in hollow form. The first spacer and the top cover are disposed on both sides of the second spacer with the first antenna and the second antenna being opposite to each other. Each of the first spacer, the second spacer and the top cover is formed of a synthetic resin. Thus, the IC chip and each antenna section are not exposed to the outside and hence weatherability is enhanced.

Abstract: A combined exercise management and entertainment unit includes a sensor for sensing a user's body state during exercise and producing an exercise signal to a microprocessor, so as to calculate the user's calorie consumption during exercise each time and the accumulated calorie consumption; a personal characteristics database for storing data of a user's body physical characteristics; an exercise course memory for storing exercise courses set by the user, including the time period, item, and duration of an exercise to be done; a setting unit for the user to set the data of body physical characteristics to be stored in the personal characteristics database; and a play unit having an entertainment information memory for storing a plurality of entertainment information entries, which correspond to the exercise items set by the user and may be selectively played corresponding to the exercise item being done.

Abstract: A computer input apparatus with health care function and a health care method are disclosed. The computer input apparatus is connected to a computer through a transmission path. The computer input apparatus comprises at least a light emitting element, an optical track detection module, a measurement module and a transmission control module. A light beam is provided by the light emitting element. The optical track detection module includes a first receiving element for receiving the light beam to detect a displacement signal of the computer input apparatus. The measurement module includes a second receiving element for receiving the light beam to detect a physiology signal of fingertips.

Abstract: A combined exercise management and entertainment unit includes a sensor for sensing a user's body state during exercise and producing an exercise signal to a microprocessor, so as to calculate the user's calorie consumption during exercise each time and the accumulated calorie consumption; a personal characteristics database for storing data of a user's body physical characteristics; an exercise course memory for storing exercise courses set by the user, including the time period, item, and duration of an exercise to be done; a setting unit for the user to set the data of body physical characteristics to be stored in the personal characteristics database; and a play unit having an entertainment information memory for storing a plurality of entertainment information entries, which correspond to the exercise items set by the user and may be selectively played corresponding to the exercise item being done.

Abstract: A notebook computer battery power level inspection device, which is co-constructed with system indicators of the notebook computer, employs an embedded controller of the notebook computer to detect the status of a battery test signal and, in response thereto, generate a signal representing the power level of the battery. Upon detection of the battery test signal, the embedded controller drives individual system indicators of an indicator system of the notebook computer to light or flash for indicating the power level of the battery. The battery test signal is generated by actuating a test switch or by actuating a predetermined one of the keys of a keyboard of the notebook computer.