Abstract: A portable computer includes a main body having a top surface, a keyboard, a touchpad, an ejector assembly, and a latching assembly. A receiving recess and a receiving hole are defined in the top surface. The receiving hole is positioned between the receiving recess and the keyboard and communicates with the receiving recess to form a connecting portion. The touchpad is detachably received in the receiving recess and includes a touchpad body and an engaging member with an engaging portion protruding from the touchpad body adjacent to the keyboard. The ejector assembly includes at least one elastic member. One end of the elastic member is fixed to a side of the receiving recess, and the other end abuts the touchpad body. The latching assembly includes a first restricting member connected to the connecting portion and a second restricting member fixed to the receiving hole and exposed from the receiving hole.

Abstract: A height adjustable stand comprises a base, a connecting member, a height extender, and a positioning mechanism. The base includes a support member protruding therefrom. The connecting member comprises a first surface and a first end frictionally and rotatably connected to the support member. The height extender is slidably connected to the connecting member and comprises a second surface and an upper connecting end for connecting with a flat panel display device. The positioning mechanism comprises a plurality of recessed portions formed in one of the first surface and the second surface, and a compressed elastic member slidably received in a receiving hole defined in the other one of the first surface and the second surface, one end of the elastic member being biased to be received in one of the plurality of recessed portions to locate the height extender in a desirable position.

Abstract: Embodiments of the invention relate to the technical field of communication services. The disclosure relates to a method, system, and apparatus for playing tones. An embodiment of the disclosure provides a method for playing a CRBT, including: receiving, by a CRBT center, a call request from a caller, and obtaining a group identification from a standard compliant group management component; obtaining a CRBT for the caller based on the group identification, and playing the CRBT. The disclosure also provides a method for playing a CRT, including: receiving, by a CRT center, a call request from a caller, and obtaining a group identification from a standard compliant group management component; obtaining a CRT for the callee based on the group identification, and playing the CRT.

Abstract: A method for fabricating a conductive winding module of a magnetic element includes the following steps. Firstly, a non-insulated winding structure including multiple conductive units is provided, wherein the conductive units have respective conductive bodies, and one or more of the conductive units have pins. Then, an insulating varnish layer is formed on surfaces of the conductive bodies, thereby producing the conductive winding module.

Abstract: A joint detection reception apparatus and method, which are utilized irrespective of a length of an orthogonal code in a TD-CDMA communication system.

Abstract: A data re-transferring method based on bit transformation is disclosed in the present invention. The key point of the method is to exchange the location of each bit constituting data according to selected transformation modes before implementing QAM during each data re-transferring process. The method further comprises: a. presetting the transformation mode representing no bit location transformation at mode 0, modulating and transmitting data with mode 0 during the first data transferring process; b. judging whether it is needed to re-transfer the data after completion of the first data transferring process; if not, going to step a to transfer new data; otherwise, further judging whether all of the selected transformation modes have been used, if not, selecting the next mode in turn, if so, selecting the modes in turn from mode 0 again; and c. exchanging the locations of bits within the symbol according to the selected mode, then modulating and transmitting the processed data.

Abstract: A joint detection reception apparatus and method, which are utilized irrespective of a length of an orthogonal code in a TD-CDMA communication system.