Projection frame synchronization device of digital-to-glue equipment

Abstract

The invention discloses a projection frame synchronization device of digital-to-glue equipment, which comprises an Led light source, a single lens, an ROD, a lens group, a reflector, an optical drive board, a projection lens, a light absorption assembly, a film, a CCD and a PC, and a projection frame synchronization method of the projection frame synchronization device comprises the following steps: step 1, data coding and mark adding; step 2, receiving, processing and projecting the picture by the equipment; 3, the high-speed CCD camera shoots the film; step 4, comparing the film identification areas, extracting the identification areas of the data frames, and comparing the identification areas through an average Hash algorithm; and 5, completing image comparison, and playing the next frame. The projection frame synchronization device of the digital-to-glue equipment has the characteristics of high speed and accuracy.

Description

technical field [0001] The invention belongs to the technical field of projection frame synchronizing devices, in particular to a projection frame synchronizing device of digital transfer glue equipment. Background technique [0002] Digital transfer glue equipment: "glue" refers to the analog data stored on the microfilm, and "number" refers to the electronic archive data. The device encodes the electronic data with an algorithm, generates a picture and then projects it on the film for preservation. Film technology and digital Technology convergence and integration make full use of the long-term storage characteristics of film. In digital-to-film equipment, there is a difficulty, especially in the direction of projection frame synchronization. Since the signal source is sent to the optical engine through the equipment end, during the projection process, It will be analyzed by the front-end equipment, especially for some XPR technology (extended pixel resolution, the project...

AI Technical Summary

Problems solved by technology

In the process of external connection, the chip adopts data parallel connection to widen the bit width of image information, and uses internal logic functions to improve the speed of image processing) to process images, then in the whole system, video signals go through equipment, front-end The control board, FPGA, projection control chip, projection chip, etc. have a total of 5 links. The processing and transmission of data will inevitably consume time, resulting in a delay between the projected image frame and the projected picture frame.

For digital-to-film equipment, the delay between playing image frames on the host side and real-time display screen frames leads to problems in equipment control control errors and inaccurate film exposure.

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