Abstract: The invented fixed-angle roller mechanism comprises: a frame providing two bearings; a roller shaft supported by said bearings such to rotate along the axis of said roller shaft, which roller shaft is connected to a rotation element; an angle regulator provided on said roller shaft to limit rotation angle of said roller shaft; and an angle fixing means provided on said frame to couple with said angle regulator such that rolling angle of said roller shaft may be limited by said angle fixing means loosely; wherein said angle regulator regulates at least two rotation angles of said roller shaft.

Abstract: Control system for image input device comprises a control module, an electronic equipment selection module, an image specification setting module and an electronic equipment control signal decoder module. The control module functions to control the operation of hardware and related modules of the image input device. The electronic equipment selection module allows users to select electronic equipments to be connected with the image input device. The image specification setting module sets a group of factors relating to the specification of the input images. The electronic equipment control signal decoder module provides a decoder to convert control signals generated by the electronic equipment into control signals for the image input device and a firmware memory device to store decoding information useful in decoding control signals generated by the electronic equipment.

Abstract: Digital camera for handset comprising a circuit board provided with image sensor, lens, CPU, memory and other electronic elements; a casing to fix and to enclose said circuit board; a connector to connect the I/O connector of the handset; a lead to connect the connector and circuits on said circuit board; and at least one fixing means to affix said casing to the back plate of the handset. The casing comprises a thin portion and a thick portion. The image sensor is contained in the thick portion of the casing.