Abstract: Embodiments of this application disclose a flash memory access method and apparatus, and relate to the field of chips, so as to alleviate a problem in the conventional technology that a conflict occurs when a plurality of software subsystems running on one chip access a flash memory. A specific solution is: The method is applied to a system on chip including an access controller and a plurality of processor cores, where the plurality of processor cores are separately connected to the access controller through a bus, a plurality of software subsystems run on the plurality of processor cores, different software subsystems run on different processor cores, and a power supply of the access controller is different from power supplies of the plurality of processor cores, or the access controller shares a power supply with a first processor core that runs a first software subsystem.

Abstract: The present invention discloses a method and an apparatus for correcting lens distortion. In some feasible implementation manners of the present invention, image data acquired from a lens is corrected in a horizontal direction; the image data corrected in the horizontal direction is written into a dynamic memory; image data in the dynamic memory is corrected in a vertical direction; and lens distortion correction is performed in two steps: in the horizontal direction and in the vertical direction, so that lens distortion correction is implemented at a low cost. The present invention further discloses a corresponding apparatus for correcting lens distortion.

Abstract: The present invention discloses a method and an apparatus for correcting lens distortion. In some feasible implementation manners of the present invention, image data acquired from a lens is corrected in a horizontal direction; the image data corrected in the horizontal direction is written into a dynamic memory; image data in the dynamic memory is corrected in a vertical direction; and lens distortion correction is performed in two steps: in the horizontal direction and in the vertical direction, so that lens distortion correction is implemented at a low cost. The present invention further discloses a corresponding apparatus for correcting lens distortion.