Indian IT services major, Wipro has acquired Nokia’s enterprise-focused Nokia Broadcast Solutions unit for a yet to be decided sum according to reports. The unit employed 40 people for creating software and hardware to enable mobile TV technology on the phone locate and access the broadcasting network.
The divestment enables Nokia to focus on the consumer side of its business rather than the B2B part.
Nokia Mobile Broadcast Solution is basically a DVB-H server platform for commercial mobile TV services. It can utilise the current TV content with little impact to the existing production systems.
Nokia was targeting a client base including broadcasters and telecom operators with the service. According to industry sources given Wipro’s presence in telecom space it does appear to be an interesting acquisition. Indian operators will source video content extensively once the 3G auction takes place they add.
Digital video broadcasting – handheld (DVB-Handheld) is an adaptation of European technology for over-the-air DTV broadcast to homes.
DVB-H integrates orthogonal frequency division multiplexing (OFDM) that allows efficient use of available bandwidth.
OFDM allows the transmission of multiple signals in one bandwidth space and spread data them over multiple data streams.
At the same time by modulating different signals it allows the receiving device to pick up only the signal it is set to receive from the jumble of signals transmitted.
In the DVB-H set up a content provider sends live video and audio streams through an encoder which is then forwarded to a 3G streaming server. The server transmits the data to multiple broadcast towers that deliver the content to coverage areas.
Mobile TV Reception
Receiving TV signal requires a TV tuner which is basically a type of radio receiver. There are two types of tuners – analog and digital working on the same technology as in a stationary TV set. Just like an AM/FM radio tuner, the tuner in a TV picks up the radio waves transmitted to the antenna for a specific channel and then extracts the video and audio signals from those radio waves.
There are analog-TV phones that pick up the same signals that an ordinary TV picks up. These phones allow viewing of conventional TV broadcast at no cost. The phones feature a built-in analog TV tuner and antenna and associated electronics for display on a 2.2 inch, 320 x 240-pixel QVGA display. However, such phones offer limited viewing time as compared to digital receivers partly on account of power they draw from the battery to digitise the analog signals for the display.
With the digital-TV phones now available on the market allow four hours viewing time per charge of the phone. The phones feature a TV antenna and DV-H radio receiver that is basically a digital TV tuner. The audio / video processor in the TV displays 30 frames per second on a 2.8 inch QVGA screen with 16 million colours. It is also possible to also record TV broadcasts for later viewing.