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QUICKSCAN Indexed-Video Electronic Publishing
IDATE paper P.1

This paper was presented at IDATE 90 (Institut de L'Audiovisuel et des Telecommunications en Europe) in Montpellier, France 15 November 1990.

QUICKSCANŽ Indexed-Video: An image-based, broadband electronic publishing system.

George L. Van Valkenburg
PO Box 385
Mangonui 0442, New Zealand
Phone: +64 (0)9 406-1018
Email: george@quickscan.org
website: www.quickscan.org

Abstract: VCR owners are induced to record QUICKSCANŽ-indexed images delivered at up to 1500 per minute (PAL), and view them frame-by-frame or as running video. This technique of alphanumeric indexing with embedded menus brings varying levels of interactivity to existing VCRs with no added equipment. Accessing is intuitively similar to magazines and catalogues. European and global investment and development opportunities require structured market tests over a wide range of applications.

CONCEPTS:
1. A video image can emulate a computer screen for storage, transmission and display purposes, within its resolution parameters.

2. All VCRs and video players are inherently interactive. Stop, pause, play, rewind, fast-forward, all are interactive commands we use without thinking. To make these functions useful for information retrieval, requires a framework of position and heading." Where am I now and where do I want to go?

In the video editing suite, this capability is provided by SMPTE/EBU Timecode, both visible and machine-readable. But timecode is not appropriate for the public or business user with a video device. In fact, there are valid questions as to whether it was ever the correct approach for its intended purposes.

3. Consumer VCRs have different levels of precision in locating information. A few can display a single frame and step forward and backwards; many more have a clear stillframe and frame-advance; virtually all can show a visible picture during fast-forward and rewind.

Therefore, closed-user groups can equip themselves with optimum terminal devices, while public services must be designed with regard to the assumed capabilities of the VCRs in the hands of the audience.

QUICKSCANŽ indexed-video electronic publishing, uses familiar alphanumeric indexing information, not timecode, and usually includes embedded menus or index pages in familiar locations, i.e., beginning, end, at regular intervals, or between chapters. This technique closes the loop, and makes each electronic publication self-contained and self-teaching.

The visible mode is adaptable to all existing VCRs with no additional hardware. It can be advertiser-supported, and can be designed to survive standards conversation and other quality degredation with no loss of accuracy in content.

The machine-readable mode requires an adapter, or a new reader-function in the VCR. [OR DIGITAL VIDEO RECORDER] It is appropriate to a smaller set of applications which are not offered free to the user.




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