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An unexpected perf feature
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Posted Mar 2, 2010 23:16 UTC (Tue) by corbet (editor, #1)
Remember that Microsoft has invested in Apple in the past. They may have all kinds of cross-licensing deals in place.
HTC and WinMo
Posted Mar 3, 2010 1:57 UTC (Wed) by mrpippy (guest, #57134)
They (and the Android phones) are accused of infringing on '263, the "Real-time signal
system for serially transmitted data". It's hard to figure out what this patent actually covers, but
seems to be about abstracting a DSP (used to interface with a communications network) from a
higher-level driver. This could apply to the HTC-written RIL (sits below the phone API and sends
commands to the radio), or to the HTC/Qualcomm AMSS firmware that runs on the radio (itself
ARM9 core). I suspect it is the latter, since the AMSS uses DSPs and presents serial ports to the
apps processor. If the AMSS is the infringing software, this means that every Qualcomm MSM
also infringing, and by extension, every single device operating on Verizon or Sprint's networks
As an interesting aside, the '263 patent was granted in January 2002, almost 8 years after the
date in August 1994. In 1993, Apple introduced the Quadra 660AV and 840AV, 68040-based
that also had a 50 MHz AT&T DSP on the logic board. Among other uses for the DSP, it could be
paired with an inexpensive telecom adapter (the GeoPort) and used as a 14.4K modem. So Apple
actually shipped products that could have used this patent, although its relevance to modern
phones is pretty tenuous.
Posted Mar 3, 2010 8:30 UTC (Wed) by niall.noigiallach (guest, #47469)
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