Abstract: An optical system affixed to an electronic apparatus is provided, including a first optical module, a second optical module, and a third optical module. The first optical module is configured to adjust the moving direction of a first light from a first moving direction to a second moving direction, wherein the first moving direction is not parallel to the second moving direction. The second optical module is configured to receive the first light moving in the second moving direction. The first light reaches the third optical module via the first optical module and the second optical module in sequence. The third optical module includes a first photoelectric converter configured to transform the first light into a first image signal.

Abstract: A backup device and a one-key data backup method for the same use a backup device having ability to retrieve a memory card and an optical disc. The backup device is connected to an external computer. A backup application is installed having backup conditions configured in the external computer. When an input unit of the backup device is triggered, the backup device sends a backup request instruction to the external computer. The external computer executes the backup application upon receiving the backup request instruction, and records data of the memory card to an optical disc, or saves the data of the optical disc in the memory card based on configured backup conditions.

Abstract: A backup device and a one-key data backup method for the same use a backup device having ability to retrieve a memory card and an optical disc. The backup device is connected to an external computer. A backup application is installed having backup conditions configured in the external computer. When an input unit of the backup device is triggered, the backup device sends a backup request instruction to the external computer. The external computer executes the backup application upon receiving the backup request instruction, and records data of the memory card to an optical disc, or saves the data of the optical disc in the memory card based on configured backup conditions.

Abstract: A two-way data and resources sharing method is disclosed. A sharing apparatus is provided to connect two computers for establishing two-way communication link between two computers. Firstly, a computer is configured as a master computer and the other computer is configured as a slave computer. The master computer and slave computer send a request instruction for executing data transfer, data synchronization or data sharing via an operating application installed in the master computer. The corresponding instructions requested are respectively executed on the connected two computers.

Abstract: An external compact disc drive for data encryption and decryption and the method is disclosed. The back up data is encrypted, via an encryption key generated by an encryption/decryption unit of the external compact disc drive during the recording of back up data to a compact disc. The encrypted back up data is saved to a public area of the compact disc. An authentication key is generated via an authentication password set up by a user. The encryption key is encrypted via authentication key and saved to a private area of the compact disc. The authentication password and the authentication key are not recorded in the external compact disc drive or the compact disc. Thus, encryption key can only be retrieved with a correct authentication password via a compact disc drive having the encryption/decryption unit. Following that, the back up data can be decrypted and retrieved.

Abstract: A stand-up external data access device includes a main body and a rotatable leg. The main body has a flat casing. One side of the flat casing is provided with a receiving portion. The rotatable leg has a plate and a connecting portion provided on a surface of the plate. The connecting portion is pivotally connected to the receiving portion and rotatable with respect to the casing. A width of the plate after being rotated out of the receiving portion is larger than a width of the casing in its thickness direction. With this structure, the supporting area for stabilizing the bottom of the stand-up main body can be increased, so that the main body can stand up more stably.

Abstract: A portable data backup device. The device has a flash memory reader to read digital data from a flash memory card, an input unit for producing a control signal, a backup unit for storing digital data, and a control unit coupled to the input unit. The device can read digital data from the flash memory card and store it to the backup unit after receiving the control signal.