Abstract: A light-emitting device includes a substrate, a semiconductor epitaxial structure, and an etch stop layer. The substrate has a first surface and a second surface opposite to the first surface. The semiconductor epitaxial structure has a side surface that has a roughened structure formed with protrusions, and includes a first type semiconductor layer, an active layer, and a second type semiconductor layer disposed on the first surface of the substrate in such order. The etch stop layer is disposed on a surface of the semiconductor epitaxial structure away from the substrate for preventing an etching solution from etching the semiconductor epitaxial structure. A light-emitting package and a light-emitting apparatus are also provided. A method for manufacturing a light-emitting device is also provided.

Abstract: A hand lifting device and a projection apparatus are provided. The hand lifting device is adapted to carry an object, and includes a support pad and a carrying strap. The support pad has a first surface and a second surface opposite to each other, and has two first connecting portions. The carrying strap has two end portions, and the two end portions respectively have a second connecting portion. The carrying strap is configured to partially surround the object, such that the second connecting portions of the carrying strap are respectively detachably connected to the first connecting portions of the support pad. The projection apparatus comprises the above hand lifting device and a projector.

Abstract: A hand lifting device and a projection apparatus are provided. The hand lifting device is adapted to carry an object, and includes a support pad and a carrying strap. The support pad has a first surface and a second surface opposite to each other, and has two first connecting portions. The carrying strap has two end portions, and the two end portions respectively have a second connecting portion. The carrying strap is configured to partially surround the object, such that the second connecting portions of the carrying strap are respectively detachably connected to the first connecting portions of the support pad. The projection apparatus comprises the above hand lifting device and a projector.

Abstract: A connection structure is connected between a wrench head of a torque wrench and a socket, and the connection structure contains: a body, a casing, and two positioning members. The body includes a coupling section, a driving section, an extension defined between the coupling section and the driving section, and two bolts oppositely inserted into the body from an outer wall of the coupling section. The casing includes a first part, a second part, and two accommodation grooves respectively defined on two inner walls of the first part and the second part and located adjacent to the coupling section. Each of the two positioning members is housed in each of the two accommodation grooves, wherein each positioning member includes multiple toothed projections arranged on an inner wall thereof and abutting against each of the two bolts.

Abstract: A T-torque wrench contains: a body including a horizontal handle and a vertical extension. The vertical extension has a fitting connector formed on a bottom thereof and configured to fit with sockets of various sizes, and the vertical extension has a strain gauge arranged on one end thereof so as to detect operation torques of the T-torque wrench, the horizontal handle has a tire-pressure detection connector connected on one end thereof. The body includes a casing covered thereon and includes a digital processing unit electrically connected with the strain gauge of the vertical extension and the tire-pressure detection connector of the horizontal handle, the casing includes a display module arranged thereon and electrically connected with the digital processing unit, and the casing includes a control module arranged thereon between the display module and the horizontal handle, wherein the control module is electrically connected with the digital processing unit.

Abstract: A T-torque wrench contains: a body including a horizontal handle and a vertical extension. The vertical extension has a fitting connector formed on a bottom thereof and configured to fit with sockets of various sizes, and the vertical extension has a strain gauge arranged on one end thereof so as to detect operation torques of the T-torque wrench, the horizontal handle has a tire-pressure detection connector connected on one end thereof. The body includes a casing covered thereon and includes a digital processing unit electrically connected with the strain gauge of the vertical extension and the tire-pressure detection connector of the horizontal handle, the casing includes a display module arranged thereon and electrically connected with the digital processing unit, and the casing includes a control module arranged thereon between the display module and the horizontal handle, wherein the control module is electrically connected with the digital processing unit.

Abstract: A connection structure is connected between a wrench head of a torque wrench and a socket, and the connection structure contains: a body, a casing, and two positioning members. The body includes a coupling section, a driving section, an extension defined between the coupling section and the driving section, and two bolts oppositely inserted into the body from an outer wall of the coupling section. The casing includes a first part, a second part, and two accommodation grooves respectively defined on two inner walls of the first part and the second part and located adjacent to the coupling section. Each of the two positioning members is housed in each of the two accommodation grooves, wherein each positioning member includes multiple toothed projections arranged on an inner wall thereof and abutting against each of the two bolts.

Abstract: A digital control module for a torque wrench contains an operating handle and a fitting assembly. The operating handle includes a ratchet working head having a connecting post for fitting with a socket. The fitting assembly includes a digital area and a gripping extension, and the digital area has a digital processing unit, a display member, and a starting button. The fitting assembly also includes a groove for inserting the operating handle, and the working handle also includes at least one strain gauge attached thereon to correspond to the fitting assembly which is fitted with the working head. The at least one strain gauge is electrically connected with the digital processing unit, and the gripping extension has at least one setting button fixed thereon and electrically connecting with the digital processing unit. The gripping extension also has a protective cover disposed thereon to cover the at least one setting button.

Abstract: A torque tire arbor contains a body, and the body includes a driving post and a digital seat. The digital seat covers and connects with the driving post, the driving post has a connecting segment defined on a first end thereof so as to couple with a wrench and has a working segment formed on a second end thereof so as to join with a socket. The body also includes a torque sensing unit for sensing a torque value and a pressure sensing unit for detecting a tire pressure value, the digital seat includes a display unit electrically connected with the torque sensing unit and the pressure sensing unit so as to display the torque value and the tire pressure value.

Abstract: A connecting structure of a torque tire contains a body and a connecting assembly. The body includes a driving column and a digital seat, the driving column has a connecting segment for coupling with a wrench and a working segment for coupling with a socket, the body also includes a torque sensing unit for sensing a torque value, and the digital seat includes a first electricity conducting segment. The connecting assembly includes a coupling segment for fitting with the driving column, a second electricity conducting segment connecting with the first electricity conducting segment, a measuring mouth for joining with an air nozzle of a tire, and a pressure sensing unit for detecting a tire pressure value. The digital seat includes a display unit electrically coupled with the torque sensing unit and the first electricity conducting segment so as to display the torque value and the tire pressure value.

Abstract: A torque tire arbor contains a body, and the body includes a driving post and a digital seat. The digital seat covers and connects with the driving post, the driving post has a connecting segment defined on a first end thereof so as to couple with a wrench and has a working segment formed on a second end thereof so as to join with a socket. The body also includes a torque sensing unit for sensing a torque value and a pressure sensing unit for detecting a tire pressure value, the digital seat includes a display unit electrically connected with the torque sensing unit and the pressure sensing unit so as to display the torque value and the tire pressure value.

Abstract: A radio frequency identification (RFID) system employs multiple band transmission to prevent signal collision. The system includes a plurality of RFID tag groups and at least one RFID reader. Each RFID tag group includes at least one RFID tag. The RFID tags of the same RFID tag group are operated for radio frequency transmission in the same transmission frequency band, and those of different RFID tag groups are operated for radio frequency transmission in different transmission frequency bands. When the RFID reader simultaneously receives radio frequency signals issued from RFID tags of different RFID tag groups, since they are transmitted in different transmission frequency bands, signal collision among the RFID tags of the RFID tag groups can be avoided.

Abstract: A torque socket structure contains a body including a connecting hole for connecting with a torque wrench and a driving orifice for driving nuts or screws, wherein the driving orifice communicates with the connecting hole, the body includes a stepped difference formed between the connecting hole and the driving orifice, and a thickness between the body and the connecting hole is greater than a thickness between the body and the driving orifice; a digital detecting mechanism including a torsion strain gage fixed on a predetermined section of the outer wall of the body which corresponds to the driving orifice, a processing unit electrically connecting with the torsion strain gage so as to receive and calculate torque value detected by the torsion strain gage, a display unit electrically connecting with the processing unit so as to display torque value calculated by the processing unit.

Abstract: A radio frequency identification (RFID) communication system and method is provided to resolve the power-consuming problems of an active RFID tag while operating at a receiving mode in a long duration. A designated channel is established between the reader and the RFID tag, and also the reader sends a designated message so that the actuated active RFID tag can receive the designated messages and dynamically enter into a receiving mode. Therefore, normal communications may be conducted between the reader and the RFID and the usage period or technical performance can be improved as well.

Abstract: A torque-indicating extensive apparatus includes an extensive rod, two sensors and a display unit. The extensive rod includes a first engaging section for engagement with a handle, a second engaging section for engagement with a bit, a middle section extending between the first and second engaging sections, and a waist formed on the middle section. The size of the waist is larger than that of the second engagement section so that stress is not concentrated in the waist when torque is transmitted through the extensive rod. The sensors are attached to the waist. The display unit is electrically connected to the sensors.

Abstract: A method for identifying an RFID (Radio Frequency IDentification) reader is provided. A first transmission path is defined between a first RFID reader and a host apparatus in a RFID system. A second transmission path is defined between the host apparatus and a second RFID reader adjacent to the first RFID reader. When the host apparatus is identifying the first RFID reader, the first RFID reader sends first identification data of the first RFID reader through the first transmission path to the host apparatus. The first RFID reader also sends first-resent identification data of the first RFID reader through the second transmission path to the host apparatus. The host apparatus identifies the first RFID reader by comparing the first identification data and the first-resent identification data transmitted through the first transmission path and the second transmission path respectively, thereby double confirming the identification data of the first RFID reader.

Abstract: A radio frequency identification (RFID) system employs multiple band transmission to prevent signal collision. The system includes a plurality of RFID tag groups and at least one RFID reader. Each RFID tag group includes at least one RFID tag. The RFID tags of the same RFID tag group are operated for radio frequency transmission in the same transmission frequency band, and those of different RFID tag groups are operated for radio frequency transmission in different transmission frequency bands. When the RFID reader simultaneously receives radio frequency signals issued from RFID tags of different RFID tag groups, since they are transmitted in different transmission frequency bands, signal collision among the RFID tags of the RFID tag groups can be avoided.

Abstract: A radio frequency identification (RFID) communication system and method is provided to resolve the power-consuming problems of an active RFID tag while operating at a receiving mode in a long duration. A designated channel is established between the reader and the RFID tag, and also the reader sends a designated message so that the actuated active RFID tag can receive the designated messages and dynamically enter into a receiving mode. Therefore, normal communications may be conducted between the reader and the RFID and the usage period or technical performance can be improved as well.

Abstract: A method for preventing signal collision in radio frequency identification (RFID) system through random code timing is disclosed. The RFID system includes one or more RFID reading device to receive respective tag information from a plurality of RFID tags. Multiple RFID tags of the RFID system each includes a microprocessor connected to a random code generation unit, a power supply unit, a memory unit and a radio frequency transceiver module. The memory unit stores the respective tag information that contains a tag identification code. The microprocessor of the RFID tag issues a base number or uses the tag identification code to generate a random code and a tag signal is transmitted to the RFID reading device in accordance with the random code so generated.