Patent ID: 8350791
Filing Date: 2013-01-08
Classification: H04N

Abstract:
1. An image display controlling device comprising: an image storing unit having a plurality of line memories each for storing pixel data of one line on a frame; a data writing unit for receiving input image data received from am image sensor and writing the received image data into said image storing unit at a writing speed; a data reading unit for reading out stored pixel data from said image storing unit and transferring the read out pixel data to an external display unit at a reading speed; a vertical counter for generating a line memory selection signal for designating a reading position in a selected line memory in accordance with a count value thereof, and a circuit for resetting a count of said vertical counter to an initial value in accordance with a head pixel indication from said data writing unit and an indication of completion of reading of pixel of a predetermined number of lines after said head pixel writing instruction is applied, wherein said data reading unit determines whether reading or skipping more pixels of an invalid pixel region of said image sensor by resetting or incrementing said count of said vertical counter in accordance with whether said writing speed of said imager sensor is slower or faster than said reading speed for said external display unit.