Qualcomm started out making satellite-based tracking systems for trucking companies, but Irwin had far bigger plans:selling the world on a new digital way to connect cellular calls and carry 40 times as much traffic as the old analog systems then in place.

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Digital radio, because of error correction requirements inherent in two-way radio communication, is substantially more fragile than the older analog radio systems.

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Some cable programmers argued that the FCC's order would make it harder for them to gain access to cable systems if both analog and digital signals of local stations had to be offered.

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The current versions are not capable of exploiting the leading-edge cell-phone technology known as 3G, a high-speed offering that follows the original analog and second-generation digital systems.

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That happened on a smaller scale in the 1990s, when manufacturers introduced three incompatible digital sound systems (in addition to the existing analog system).

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Under the Federal Communications Commission's requirement, cable operators must either switch to all-digital systems, or carry both the digital and analog signals of local stations in the first three years after the February 2009 conversion.

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In fact, our analog semiconductor solutions are increasingly at the heart of everything from smartphones to smart appliances to home security systems to satellites to medical sensors to hybrid vehicles.

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