DirectBand

DirectBand was a North American wireless datacast network owned and operated by Microsoft.wikipedia
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Datacasting

datacastdata broadcastingdata
DirectBand was a North American wireless datacast network owned and operated by Microsoft.
DirectBand and RDS/RBDS are medium and narrow subcarriers used for analog FM radio.

Subcarrier

sub-carriersubcarriersFM stereo subcarrier
DirectBand used the 67.65 kHz subcarrier leased by Microsoft from commercial radio broadcasters.
The technology was known as DirectBand.

Smart Personal Objects Technology

SPOT
DirectBand is a product of the Smart Personal Objects Technology (SPOT) team at Microsoft.
Microsoft Research and SCA Data Systems would ultimately develop the DirectBand subcarrier technology for SPOT.

MSN Direct

MSN Direct is the consumer brand that Microsoft uses for devices that receive content from the DirectBand network.
* DirectBand

Microsoft

Microsoft CorporationMSMicrosoft Corp.
DirectBand was a North American wireless datacast network owned and operated by Microsoft.

Error correction code

error-correcting codeerror correcting codeECC
This subcarrier delivers about 12 kbit/s (net after ECC) of data per tower, for over 100 MB per day per city.

Radio Data System

RDSRBDSRadio Data System (RDS)
DirectBand did not use the RDS (Radio Data System) subcarrier.
DirectBand

Trellis modulation

trellis coded modulationTCMTrellis
Error correction was 1/2 rate interleaved trellis with time diversity, soft-decision decode.

ARM7

ARM7TDMIARM7EJ-SARM7T
Some designs added an ARM7-based processor.

Garmin

Garmin Ltd.Garmin CorporationGarmin Europe
Although this clearly indicated Microsoft's intent to cease usage of the service, it is not yet known whether the DirectBand technology will be sold to another company, such as one of the hardware licensees of MSN Direct (e.g. Garmin) or whether the technology will be put in the public domain as an open source technology.

Subsidiary communications authority

SCASCMO67kHz
For data broadcasting: Microsoft's now-defunct DirectBand service (used by MSN Direct) relied on SCA FM subcarriers; Data Broadcasting Corporation's Signal service used SCA for sending real-time stock quotes.

Data Radio Channel

DARC
Other data broadcasting technologies include RDS and Microsoft's DirectBand.