AES E-Library

AES E-Library

Generating Time Code Information from Analog Sources

Document Thumbnail

We present an add-on to cinema projectors that allows projecting subtitles or playing soundclips. These functions require precise timing information to keep both the video content and the added features synchronized. Although some digital projectors offer this timing information, our solution is compatible with all projectors worldwide. This allows cinema operators to offer additional features to their audience without moving to a new and expensive projector system. Our system is simply connected to the analog output of the projector. Based on a pre-computed image file and the live analog input, it calculates the timing through cross-correlation. The system is basically a standard PC and requires no dedicated DSP, instead it is based on “native” signal processing techniques on the CPU.

AES Convention: Paper Number:
Publication Date:

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!

AES - Audio Engineering Society