Abstract:
A chime bar assembly includes a hollow body with a resonation space defined therein and a top opening is defined in a top of the hollow body. A metal plate is located above the top opening and supported by two rubber plates. A hitting device is connected to the rear end of the hollow body and includes a case which includes lugs to which a pivotal end of a rod is pivotably connected. An operation unit is connected to the case and pushes the pivotal end of the rod so that the sphere is lowered to hit the metal plate.
Abstract:
A time domain symbol timing synchronization circuit is disclosed, which comprises: an autocorrelation function calculator for calculating cyclic prefix autocorrelation functions and an offset time estimator for searching peak positions of cyclic prefix autocorrelation functions to indicate symbol boundary of received communication symbols. The offset time estimator compares a current peak position and a previous peak position. If (a) the difference of the positions is larger than a threshold and (b) the current peak is smaller than a reference average peak, the current peak is determined as false; the offset time estimator weeds out and replaces the current peak position by the previous peak position; and the current peak is not introduced in the reference average peak calculation.
Abstract:
An electrical connector (100) is provided for mating with a terminal (9) of a mating object and includes an insulative housing (21) and a number of conductive contacts (22) held in the housing. Each conductive contact includes a spring portion (223) and a contacting portion (224) forwardly extending from the spring portion. The contacting portion is supported by the spring portion to be elastically movable in a first direction and a second direction. A contacting point (2240) downwardly bends and extends from a front section of the contacting portion to be brought into mate with a mating object (9).
Abstract:
A case (1) is provided for receiving a portable storage peripheral equipment which generally accomplishes signal transmission with a computer. The case includes a case body consisting of a top cover (10) and a bottom cover (20), and a cable assembly (30). Each of the top cover and the bottom cover has a sidewall (14) cooperated with each other. Each sidewall defines a groove (142) therein. The groove of the top cover and the groove of the bottom cover together form a receiving channel (126). The cable assembly has a cable (31) and a cable connector (34) at a free end thereof. The cable can extend out of the case body when the cable connector is in a using state and can be retained in the receiving channel when the cable connector is in an unused state. The case does not occupy external space and is convenient for shipping.
Abstract:
A support for an electronic device includes a mounting apparatus and a supporting apparatus. The mounting apparatus includes a fixing bracket mounted to the main body of an electronic device, an engaging member slidably mounted to the fixing bracket, and a resilient member connected between the fixing bracket and the engaging member. The supporting apparatus includes a connecting bracket detachably mounted to the fixing bracket. When the engaging member is slid relative to the fixing bracket, a stop piece moves away from the connecting hole, and a hook extends through the connecting hole. After the engaging member is released the stop piece moves to the connecting hole to engage with the hook.
Abstract:
A drive circuit for light emitting diode (LED) is provided, which is used to drive a plurality of LEDs to emit light. The LEDs are connected in series into a plurality of LED strings. The drive circuit includes a power converter, a detection circuit, and a report circuit. The power converter provides a driving voltage to the LED strings, and the detection circuit detects a string voltage of each LED string, and compares the string voltage with a default reference voltage, so as to determine whether the string voltage is different from the reference voltage (which indicates that the LED string is operated under a non-default state), and sends a detection signal to the report circuit. The report circuit receives the detection signal and outputs the control signal to the power converter, such that the power converter adjusts the driving voltage according to the control signal.
Abstract:
A memory card connector has an insulative frame receiving conductive terminals therein, a slide guiding mechanism assembled on the insulative frame, and a shell. The slide guiding mechanism includes a sliding bar, a guiding bar, and a resilient element. The sliding bar defines a guiding groove. A link portion is formed on an end of the sliding bar. A driving member is arranged at an end of the sliding bar and opposite the link portion, and has a pushing portion and a drawing portion. A driven member has a pushed portion and a drawn portion. The driven member cooperates with a stop member to control stopping of a member card. The slide guiding mechanism further includes a first conductor and a second conductor respectively communicating with ends of a detecting circuit of a circuit system for detecting ejection of the memory card at the earliest time.
Abstract:
A memory card connector includes an insulative frame, a plurality of conductive terminals, an ejecting mechanism for guiding a memory card in or out, and a conductor connecting with a circuit system. The ejecting mechanism includes a guiding groove, a guiding device displacing in the guiding groove, and an urging element providing returning force for the guiding device. The conductor is located in a position before an ejection portion of the guiding groove for detecting the memory card as which is disconnected from a circuit system at the earliest time that the ejecting mechanism be ejected from a starting position of the ejection portion, thereby the circuit system has sufficient time to protect the proceeded data before the memory card disengages wholly from the terminals during the memory card ejects out, avoiding the proceeded data being lost and preventing the memory card from being damaged.
Abstract:
A collision avoidance method for transmitting data from multiple wireless tire condition sensors on a vehicle is executed by each wireless tire condition sensor having a unique ID and multiple different wake-up times. After the sensor is operated to sense data, the method has steps of reading the ID and computing a determination value with the ID and a variable, selecting one of the wake-up times according to the determination result, and after the selected wake-up time expires, transmitting the sensed data. As the selected wake-up times of the sensors differ from one another, data collision at the receiving end arising from data transmission from the sensors can be avoided. Additionally, besides the wake-up time, a time gap between data transmitted twice consecutively from each sensor can be employed to achieve data collision avoidance.