摘要:
A system and method of updating firmware and a method of creating firmware are provided. The system includes a firmware storage module having first firmware and second firmware. The first and second firmware each have image header file data, including a cyclic redundancy checksum (CRC) and an image header file creation time. The method of updating firmware includes determining whether the first and second firmware have an abnormality according to the CRC information. When an abnormality is present in the first or second firmware, the abnormality-stricken firmware is replaced with new firmware. When the abnormality is absent from the first and second firmware, the first firmware is compared with the second firmware in terms of the image header file creation time such that the firmware with the earlier creation time is replaced by the new firmware. Operable firmware is available even if the firmware updating operation fails.
摘要:
A control device having an output pin expansion function and an output pin expansion method thereof are provided. The method includes: connecting at least a shift register unit having a plurality of data transmission pins to a control unit such that the shift register unit can receive strobe signals, a multi-bit data stream, clock signals and enable signals generated by the control unit; sending an enable signal by the control unit so as to allow the shift register unit to shift and store each bit of a multi-bit data stream according to a clock signal generated by the control unit; and sending a strobe signal by the control unit so as to allow the shift register unit to output the multi-bit data in parallel format as opposed to the received serial format through the plurality of data transmission pins, thereby allowing a processing device to interface with more devices (such as LED state indicators) than its fixed number of dedicated output pins would conveniently allow, thus saving costs and board space.
摘要:
The present invention provides a circuit board having an isolation cover and an assembling method thereof. The circuit board of the present invention comprises a main body and an isolation cover disposed on the circuit board main body. The main body and the isolation cover have a plurality of corresponding first and second positioning portions, and a ground portion is disposed on at least one side of each first positioning portion. The isolation cover is disposed on a first surface of the main body, and each second positioning portion passes through a second surface of the main body and each first positioning portion. An end of each second positioning portion is connected to each ground portion.
摘要:
The present invention provides a circuit board of a communication product and a manufacturing method thereof. The circuit board comprises a main body of a circuit board and an isolation cover. A surface of the main body of the circuit board has a power transistor, an insulating layer, a plurality of first openings disposed at intervals on the insulating layer and around the power transistor, and a plurality of soldering portions exposed from the first openings respectively. The isolation cover comprises a cover body and a plurality of second openings equidistantly opened on a lateral side of the cover body. The isolation cover is disposed on the surface of the main body of the circuit board, and is soldered to the soldering portions through a local spot soldering process.
摘要:
The present invention provides a circuit board of a communication product and a manufacturing method thereof. The circuit board comprises a main body of a circuit board and an isolation cover. A surface of the main body of the circuit board has a power transistor, an insulating layer, a plurality of first openings disposed at intervals on the insulating layer and around the power transistor, and a plurality of soldering portions exposed from the first openings respectively. The isolation cover comprises a cover body and a plurality of second openings equidistantly opened on a lateral side of the cover body. The isolation cover is disposed on the surface of the main body of the circuit board, and is soldered to the soldering portions through a local spot soldering process.
摘要:
The present invention provides a circuit board having an isolation cover and an assembling method thereof. The circuit board of the present invention comprises a main body and an isolation cover disposed on the circuit board main body. The main body and the isolation cover have a plurality of corresponding first and second positioning portions, and a ground portion is disposed on at least one side of each first positioning portion. The isolation cover is disposed on a first surface of the main body, and each second positioning portion passes through a second surface of the main body and each first positioning portion. An end of each second positioning portion is connected to each ground portion.
摘要:
An assembly device includes a base having a supporting portion upon which an isolation cover and a main body are disposed. A press-fitting mechanism is movably connected to the base, and includes a press-fitting portion facing the supporting portion and disposed corresponding in position to the supporting portion, and further portions for guiding and bending second positioning portions. The further portions are movably disposed on external side faces of the press-fitting portion. The press-fitting mechanism also has first portions for holding the further portions to the external side faces of the press-fitting portion, and has second portions passing through upper ends of the further portions. A drive mechanism is disposed at the base and has a drive portion connected to the press-fitting mechanism, for driving the press-fitting mechanism to move towards the supporting portion via the drive portion, so as to bend and fasten ends of second positioning portions.
摘要:
A control device having an output pin expansion function and an output pin expansion method thereof are provided. The method includes: connecting at least a shift register unit having a plurality of data transmission pins to a control unit such that the shift register unit can receive strobe signals, a multi-bit data stream, clock signals and enable signals generated by the control unit; sending an enable signal by the control unit so as to allow the shift register unit to shift and store each bit of a multi-bit data stream according to a clock signal generated by the control unit; and sending a strobe signal by the control unit so as to allow the shift register unit to output the multi-bit data in parallel format as opposed to the received serial format through the plurality of data transmission pins, thereby allowing a processing device to interface with more devices (such as LED state indicators) than its fixed number of dedicated output pins would conveniently allow, thus saving costs and board space.
摘要:
A material-loading control system and method are disclosed for controlling a track conveyor on a production line through a control unit. When materials are to be loaded, production information is first obtained from a production management system, and information of a tray to be loaded, information of a feeder in which the tray is loaded, and information of a corresponding station are identified. The various information are compared with the production information obtained to see whether they are matched or not. If they are not matched, the control unit is instructed to power off the track conveyor to stop the operation of the track conveyor. In addition, during subsequent production process, if a material-tossing action is detected in the production line, then the control unit is instructed to stop the operation of the track conveyor, thereby ensuring the correctness of tray changing and reducing the error rate in material loading.
摘要:
A method for programming output value of a key is applicable to an electronic device having at least a key. Therein, a first output value can be generated when the press key is triggered. The method includes the steps of: setting a second output value for the key; creating and storing a first corresponding table between the first output value and the second output value such that the second output value is obtained from the first corresponding table based on the first output value generated by triggering the key; and converting the second output value into a corresponding key value according to a second corresponding table between output values and key values preloaded in the electronic device.