US 5,872,588 · Granted 1999-02-16

How IBM Patented TV Watching: The Birth of Viewing Analytics

IBM created a system that invisibly tracks what TV shows and videos you watch at home, then reports that data back to the cable company. It works by embedding hidden codes in the video stream that your home box decodes and sends upstream — basically the grandfather of today's streaming analytics.

Curated and verified by the IsItPatented Editorial team

The plain-English version

What it protects

The claim covers a method for embedding encoded content codes into audio-visual streams, decoding those codes at a home receiver, collecting viewing data about which programs a subscriber has watched, and then transmitting that aggregated data back to a central collection center via the upstream network channel. Specifically protected is the combination of the encoding mechanism, the home station decoder, the data collection process, and the feedback transmission — the whole closed loop.

Why it matters

This patent captures one of the first systematic approaches to measuring TV viewership electronically at scale. Before digital set-top boxes became standard, Nielsen relied on small survey samples. IBM's invention enabled cable operators and networks to see exactly which households watched which programs in real time, turning viewing data into a measurable commodity. That capability underpinned modern audience metrics and advertising targeting.

Real-world use

When you watch cable or streaming video through a set-top box, the system silently records what you viewed and sends that data back to your provider — that tracking infrastructure traces back to concepts like this patent.

Original USPTO abstract

A method and apparatus for content coding of Audio-Visual materials is presented. The content coding can then be decoded by a home station where the content coding is collected and processed. The content codes are utilized by the subscribers home station to collect information on the subscribers selection of AVM streams and record information on which AVMs have been presented to the subscriber. An audio-video material distribution system is described for supplying AVM streams to home station via a local distribution network. The home stations decode the content coding from the AVM streams and collect the encoded content codes. The collected content codes are then sent to collection centers for processing. The encoded information may also utilized to provide management of an upstream channel between the home stations and the video distribution node.

Patent details

Publication number: US 5,872,588
Filing date: 1995-12-06
Grant date: 1999-02-16
Assignee: International Business Machines Corporation
Inventor(s): ARAS; CAGLAN M., GRIFFIN; LUTHER B., LAI; FUYUNG, STAGG; ARTHUR JAMES, SY; KIAN-BON KHO
CPC class: H04N21/44222

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