Getac Technology

A camera (C) and a heat shield (H) thereof. The camera (C) includes a first housing (100), a second housing (200), and a heat shield (H). The heat shield (H) is mounted on the first housing (100). The heat shield (H) includes a casing body (10) and a latch abutting member (20). The casing body (10) includes two openings (11), a circumferential wall (12), and two limiting portions (13). The two openings (11) are formed on two opposite ends of the circumferential wall (12). The two limiting portions (13) are arranged on two opposite sides of the circumferential wall (12). The circumferential wall (12) and the two limiting portions (13) jointly define an accommodating space (CP). The latch abutting member (20) is disposed on one of the two opposite ends of the circumferential wall (12) and positioned near one of the two openings (11).

A printed circuit board assembly includes a circuit board, a heater resistor and a switch. The circuit board includes a component layer, a signal layer, a conductive layer and a conductive via. The component layer includes a mounting area for mounting a component. The signal layer includes first and second traces. The conductive layer is disposed between the component layer and the signal layer. The component layer includes a conductive pattern. The conductive via connects the first trace to the conductive pattern. The heater resistor includes a first terminal electrically connected to the first trace and a second terminal electrically connected to the second trace. The conductive pattern, the conductive via, the first trace, the heater resistor, the switch and the second trace are electrically connected in series between a power supply voltage terminal and a ground terminal.

A heat dissipation module (30) includes a diversion case (33) and a fan (31). The diversion case (33) includes an input section (331), an output section (332), and a connecting section (333) that connects the input section (331) and the output section (332), where an angle is defined between an extending direction of the input section (331) and an extending direction of the output section (332), and an end of the input section (331) away from the connecting section (333) and an end of the output section (332) away from the connecting section (333) are respectively inclined relative to the connecting section (333). The fan (31) is accommodated in the connecting section (333). An electronic device assembly includes an expansion component (E1) and the heat dissipation module (30).

A software activation method includes the following steps. An installation program created according to a stock keeping unit of an application program in a current order from a customer is obtained by an activation server, and the installation program and an enabling program are provided. The installation program is executed by a user device to install or update the application program, and after completing installation of the installation program, the activation server performs the following steps. A plurality of device serial numbers included in a past purchase order from the customer are obtained. Device information of the user device is verified according to the device serial numbers. When the verification passes, a license key is provided to the user device. The execution for the application program in the user device is activated based on the license key.

A method of operating a barcode scanner includes: capturing an image by an image capturing device, the image including a barcode, and the image capturing device having a first focal length, wherein the image capturing device is configured to auto-focus on the image; adjusting the first focal length of the image capturing device to a second focal length different from the first focal length; scanning the barcode in the image; and fixing the second focal length until a time interval is exceeded.

A radio-frequency switching circuit includes a first antenna, a second antenna, a power divider, and a frequency dividing unit. The first antenna is adjacent to a radio-frequency interference source. The second antenna is disposed outside an interfering range of the radio-frequency interference source. A first input port and a second input port of the power divider are respectively coupled with the first antenna and the second antenna. The frequency dividing unit is coupled with an output port of the power divider. In this way, the radio-frequency still works efficiently under the effect of radio-frequency interference.

A radio frequency front-end circuit includes a first diplexer, an extractor, and a second diplexer. First diplexer is coupled to an antenna for receiving a radio frequency signal and configured to separate radio frequency signal into a first signal within low, mid andhigh bands of a wireless wide area network and a second signal within an ultra-high band of WWAN. Extractor is coupled to first diplexer. Extractor includes two band pass filters and a band rejection filter. Two band pass filters are configured to extract two global navigation system signals within two global navigation system bands from first signal. Band rejection filter is configured to allow a third signal within the mid and high bands of WWAN in first signal to pass. Second diplexer is coupled to first diplexer and extractor and configured to combine second and third signals into a WWAN signal.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …