Software vendors with Blackfin DSP to build mobile TV receiver.
Internet Time: May 21, 2007 With the huge business opportunities for mobile TV to Asia, technology providers are working with new partners (and sometimes unexpected) alliance to develop their own strategies. .
RadioScape is a company located in London's digital audio broadcasting (DAB) software developer, the company had to choose one of the TI DSP digital radio development, the company recently announced that it has chosen the ADI Blackfin processor as its mobile TV development platform. RadioScape will share their wealth of ADI "end-to-end" DAB experience, to build on the Eureka 147 DAB standard for mobile TV receiver, the company says.
When asked why the RadioScape turn the mobile TV business ADI, the company's CEO John Hall said: "We are a software-defined radio (SDR) company, our approach is very simple for a specific market choose the most suitable platform. In whatever choice of chips, we are objective. but TI is still a partner in the digital wireless market. ". .
The ADI, it is only in the past 12 months in the field of mobile TV, a series of activities. This series of activities including last year's acquisition of Korea Integrant Technologies company. Integrant is a company for mobile communication, computer and consumer electronics field, used to receive digital radio broadcasting DTV and high-performance, low power consumption wireless tuner developers.
RadioScape's announcement and the launch of its latest ADI Blackfin processor ADSP-BF52x echoes. The processor is targeted at portable media players, mobile TV and other mobile applications, use ADI's Lockbox security technology, as well as the declared ADI Blackfin brand owned by far the best energy efficient technologies. .
In alliance with the ADI, in addition to providing A/V decoders (H .264 video, used. AAC + and MPEG-4 BSAC audio), RadioScape DAB will supply data, audio, and DAB T-DMB DAB-IP, baseband decoder software. "RadioScape will take a single software framework to provide all of these products," Hall, "we will all together. ” 。.
"We ADSP-BF52x to RadioScape, by their completion of the software integrated into the system all the hard work." ADI mobile product line manager Tony Zarola said. Although the RadioScape software integrated into the Blackfin encounter various technical challenges, but the process is relatively smooth and relatively quick, Zarola said, "I could not help but want to tell you, just spent half a year, we start from scratch erected a large platform. ". .
Currently, South Korea and China, system vendors are beginning to realize: If only for A DAB stack, writing/V codec, and then run them on DSP, which can lead to excessive cell phone costs, Hall said. He said: "the customer needs a middleware layer, or an organization with a good framework. We provide superior DSP coding and programming skills. ” 。.
Figure: Mobile TV hardware reference design. .
Hall, ADI from October last year began to contact RadioScape, understand their software skills. It was revealed that RadioScape both companies has a section on Blackfin BF533 for complete 544kbps T-DMB data rate, which can both baseband and A/V decoding.
ADI introduced, ADSP-BF52x so designers can trade-off between power and performance and optimization. The series processor has a number of different configurations, including high-performance devices from 600MHz to 400MHz ultra-low power versions of products. When the unit price per million volume from 5. .50 To 14. .50 Dollars. .
New Blackfin for internal voltage regulator, and through process improvement enhances dynamic power management, and its on-chip power adjustable power can be different for executive function and the desired match Mips.
Meanwhile, Blackfin's Lockbox security technology is a combination of software and hardware mechanisms, and has been used in other Blackfin processors. The executable identification technology, IP protection, digital rights management and a series of security measures. .
"As the PMP and other devices, the mobile data volume increases, so start hurricanes to track IP is protected is not possible," said, "the Lockbox Zarola is tapping a Blackfin development mechanism that allows users to store private keys. ” 。.
Decoding mechanism of the watershed. .
Like the Blackfin to run on this in single-chip mobile TV demodulation and decoding A/V, is distinct from the cell phone and PMP in traditional decoding mechanism of the watershed. Traditional mobile TV receiver includes a digital TV tuner IC and a demodulator, A/V decoding function from the phone's multimedia processor independent. Although DVB-H chip vendors are always looking for integrated tuner and demodulator DVB-H, but they think it is — A/V decoding by independent multimedia coprocessor chip or complete. Many high-end cell phones already use a similar chip to achieve camera or MP3 playback. .
But the so-called function cell phones (feature phone) and PMP, reduce design costs is the most important, Hall said. "ADI DSP saves expensive application processor, so that we can lower the cost of providing mobile TV programmes. "Hall," the mobile TV RF and baseband, this process has proved more difficult than expected. Some companies have started to return to the conceptual stage, to rethink it. ” 。.
TI has been hyped, "Hollywood" single-chip DVB-H tuner and demodulator ultimately did not make the Nokia phones, Nokia is said to be in the newly released mobile TV handset with its own DVB-H chip. .
But TI mobile DTV solution business development manager, Tifany Wilson Hollywood chip has been more companies adopt, but TI also cannot disclose the customer's name.
Wilson describes, TI is the first time in 2005, Nokia and other companies to provide samples of Hollywood, and asked the company's market based on different observations were part of the changes. "This is normal," she said, "When you phone chip vendors, they always asked to make some changes.". .
But she also acknowledged that Hollywood chips accept speed slower than expected, due to the slow development of mobile TV itself.
Although stress is not clear is who will own the latest Nokia mobile TV phones chips, but the Hall is recognized RadioScape, mobile TV shipments increased to stimulate the industry to resolve RF chip and baseband integrated determination. "If mobile TV is now able to achieve annual shipments of 100 million, then the chip industry have long solved this problem." He said. .
According to Hall, RadioScape will provide a complete based on DAB Receiver, the receiver will develop Blackfin and Integrant ADI tuner or tuners that RadioScape's own, "However, we still have yet to finalize the specific programmes. "He said.
Consideration: Junko Maidai Lun. .
Related info.
* What is DAB?. .
DAB-Digital Audio Broadcasting, which is shorthand for digital audio broadcasting. It is AM, FM and traditional analog broadcasts after the third generation of broadcast, in addition to a digital signal transmission noise, interference, the decline of radio wave propagation, etc. all advantages, but also provides CD quality stereo sound and digital information services, and in a certain range shall not be subject to the effects of multipath interference in order to guarantee the quality of fixed and mobile reception. DAB system the world can be divided into the development of the EU regulation Eureka-147, U.S. IBOC (In-Band On-Channel) and the French DRM (Digital Radio Mondiale). .
* What is a DSP?.
DSP (digital singnal processor) based digital signal digital signal processor to handle large amounts of information in the device. It is not only programmable, but also actually speed up when tens of million of complex instructions per second procedure, far more than general purpose microprocessor. Its powerful data processing capability and high-speed, two of the most commendable features. .
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