Abstract: An electronic device includes a first voltage module, a second voltage module, a key circuit, and a processor. The key circuit controls the first voltage module to provide different voltages to the processor based on different operations of user. The processor determines whether the voltage provided by the first module is changed by one pressed key from the key circuit. When the voltage provided by the first module is changed by two pressed keys from the key circuit, the processor does not compares the voltage provided by the first module to standard voltages and does not execute any function.

Abstract: An electronic device with an anti-bounce key function includes a first voltage module, a second voltage module, a key module, a processor, and a bounce protection circuit. The first voltage module provides a first voltage, and the second voltage module provides a second voltage. The key module with a number of keys generates a pressing signal when a key is pressed. The bounce protection circuit connected between the key module and the processor is powered by the first voltage module. Each of the keys, when pressed, corresponds to a predetermined period of time. The bounce protection circuit counts time when the key module generates a pressed signal, and transmits the pressed signal to the processor when the elapsed time is more than the predetermined period of time corresponding to the pressed key.

Abstract: A driving IC is being controlled by a host IC to update a driving program stored in a storage with a SPI interface. The driving IC includes a IIC interface, an identifying module, and a calculating module. The IIC interface receives an instruction from the host IC in the IIC protocol format. The identifying module determines whether the received instruction is an update instruction, and generates a converting instruction when the received instruction is the update instruction. The calculating module converts the received instruction into a SPI format according to a predetermined converting rule. The SPI interface transmits the converted instruction in the SPI format to the storage.

Abstract: A data recovery system for recovering at least one system parameter of an electronic device. The electronic device comprises a first storage module for storing a check parameter and the system parameter, and a second storage module for storing a first default value corresponding to the check parameter and at least one second default value corresponding to the system parameter. The data recovery system comprises an obtaining module for obtaining a check parameter when the electronic device starts up, a determining module for determining whether the check parameter matches the first default value, and a recovery module for recovering the system parameter to a second default value when the check parameter is not the first default value. A storage medium with a recovery function and a data recovery method applied in the data recovery system are also disclosed.

Abstract: A media player for playing audio files comprises storage, an obtaining module, a determining module, and a comparing module connected to the storage, the obtaining module, and the determining module. The storage is used for store breakpoint information which indicates the currently playing position of the playing audio file at a predetermined time period and comprises with a plurality of parameters. The obtaining module obtains breakpoint information. When there is previous stored breaking information in the storage, and any parameters of the current breakpoint information is different from the corresponding parameters of the previous stored breakpoint information in the storage, the comparing module controls the storage to replace the parameters of the previous stored breakpoint information with the corresponding different parameters of the current breakpoint information.

Abstract: A disc player plays a test disc to perform a burn-in test. The disc player includes a driving unit, a timing unit, storage, an input unit and an output unit. The driving unit plays the test disc and generates a first timing signal when begin to play the test disc. The timing unit counts the duration of the burn-in test from a default value in response to the start signal. The storage stores the duration counted by the timing unit in real time. The input unit generates an output signal in response to a first user operation. The output unit outputs the stored duration in response to the output signal.

Abstract: A time-detecting device detects a time duration of a burn-in test performed by an electronic device. The electronic device generates a first signal and a second signal when the burn-in test is started and stopped, respectively. The time-detecting device comprises a timing unit, a processor, and an outputting unit. The timing unit counts the time duration of the burn-in test from a default starting value in response to receiving the first signal. The processor determines whether the burn-in test is stopped according to the second signal. The output unit outputs the time duration when the processor determines that the burn-in test is stopped.

Abstract: An updating system for updating an electronic device, comprises a storage unit, an obtaining unit for obtaining an update data from a storage medium and a first check value corresponding to the update data, and storing the updating data to the storage unit, wherein the first check value is calculated according to the update data. A calculating unit for calculating a second check value according to the updating data stored in the storage unit. A determining unit for determining whether the second check value matches the first check value, and an updating unit for updating the electronic device according to the obtained update data when the second check value matches the first value. Thus, the updating system can avoid an error occurs during the updating process. An updating method applied in the updating system is also provided.

Abstract: An electronic device includes a processing system, a storage unit for storing a table, an input unit for generating instruction in response to the operations of the user, and an actuating unit for generating an interrupt in response to the instructions to request the processing system to execute the instructions to perform desired functions. The table recording a relationship between an occupancy and a desired operating speed of the processing system. When the processing system is requested to execute instructions, the processing system calculates the occupancy and adjusts operating speed according to the calculated occupancy and the table. A method for reducing CPU power consumption is also provided.

Abstract: A testing method tests a disc loading and transferring mechanism having a tray. The testing method includes steps of: transmitting a tray-out instruction and a tray-in instruction in that order to drive the tray to alternate between a closed position and a opened; counting a first period of the tray moving from the closed position to the opened position and a second period of the tray moving from the opened position to the closed position; determining whether the first counted period and the second counted period are in conformity with predetermined and expected standards, and outputting test results for indicating the disc loading and transferring mechanism is not in conformity with predetermined and expected standards when the first counted period and the second counted period are in conformity with predetermined and expected standards.

Abstract: A testing method tests the performance of a disc loading and transferring mechanism having a tray. The testing method includes steps of transmitting tray-out and tray-in instructions in that order, to drive the tray between a closed position and an opened position, detecting when the tray reaches the opposing position, counting the number of operations of the tray alternating between a closed position and an opened position; determining when the number of counts is equal to a predetermined number and outputting test results when the actual count is equal to a predetermined number or when the count is interrupted by malfunction.

Abstract: An updating system includes an input unit, a recording unit, and a processor. The input unit generates updating data for updating a to-be-updated file in response to users operations. The processor updates the to-be-updated file using the updating data generated in response to users operations. The recording unit creates a duplicate record for recording the updating data during the procedure of updating the to-be-updated file. If the updating system is powered off before the to-be-updated file has been updated, the processor can obtain the duplicate record to update the to-be-updated file when the updating system is again powered on. An updating method applied in the updating system is also provided.

Abstract: A playing method is executed in an electronic device. The electronic device plays information from a storage unit. The electronic device includes a non-volatile memory. The playing method includes steps of: receiving a first playing commands; obtaining information from the storage unit in response to the first playing commands; playing the obtained information; obtaining a playing position at a predetermined time interval; and storing the playing position into the non-volatile memory.

Abstract: A data processing system includes a first storage, a second storage, a processor and a controller. The first storage is a non-volatile storage, the second storage is a volatile storage. The first storage and the second storage are initialized when the data processing system is started up. The controller detects whether the first storage and the second storage have been initialized, and generates a signal to control the processor to write data from the first storage to the second storage. The controller further detects when the processor generates a request to read data from the first storage, and generates a reading instruction to control the processor to, instead, read the same data from the second storage that was copied from the first storage to the second storage.

Abstract: An electronic device capable of switching between a normal mode for recording users' operation information and a testing mode for allowing testers to analyze the recorded users' operation information, is provided. The electronic device includes an interface allowing an external device having a storage module to be electronically connected thereto, a detecting unit for detecting when the external device is electronically connected to the interface port when the electronic device is put into the testing mode, and a processor backing up the stored users' operation information to the external device if the external device having a sufficient available capacity is electronically connected to the interface port. A method for backing up users operation information is also provided.

Abstract: A wheel device for a frame includes a wheel unit and a coupling unit for coupling the wheel unit to the frame. The coupling unit includes an upright tubular sleeve mounted fixedly on the frame, a support axle extending movably through the tubular sleeve and having a bottom end connected to the wheel unit, and a fastening member extending radially through the tubular sleeve and abutting releasably against the support axle for positioning the support axle in the tubular sleeve.

Abstract: A portable computer and data backup method thereof is disclosed. The portable computer includes a hard disk drive (HDD), a data storage device and a control unit. The HDD is for storing data, while the data storage device is for making a backup of the HDD data. The control device is coupled to the HDD and the data storage device. The data backup method includes setting the data storage device in a power off mode or power-saving mode and using the HDD to store data in order to perform a normal-mode operation; and waking up the data storage device to make a backup of the HDD data to perform a backup-mode operation.

Abstract: A power lawn mower includes a mower body, a driving device, and a brake device. The driving device is disposed on the mower body, and includes an engine and an electrical element unit. The brake device and the electrical element unit are located respectively at two opposite sides of an assembly of the engine and the flywheel.