Multi-core low-power digital mobile TV solutions
Through multi-core low-power technology and various IP modules, the VF1000 can not only meet the needs of digital mobile TVs for low-power video decoding chips, but also suitable for GPS, IPTVSTB, PMP and even watch TVs. Various applications of power consumption decoding technology. "The demand for the mobile TV and wearable video products market is very objective. Yuanjian Technology is the first low-power and low-cost H.264 decoding solution provider for VGA (DVD) quality mobile TV demonstrations." The ice-breaking ceremony at VF1000 On the company's CEO Yuan Kaizhi said. He pointed out that mobile TV video processing is a high-energy-consuming application, which poses challenges for Battery-powered portable electronic devices. The VF1000 is a video processing chip with ultra-low power consumption as its main feature. "It can provide real-time decoding capability of VGA-quality AVC / H.264 video with very low power consumption. This will help to realize a small-sized wearable video terminal-soon we will be able to enjoy the Watching quality video (Entertainment-quality). "Yuan Kaizhi said. Allegedly, the chip consumes only about 20mW in VGA format H.264 decoding, but TI's similar products require up to 1W of power consumption. In order to reduce power consumption, the multi-core SoC architecture has come in handy. VF1000 contains three CPU cores: system processor / audio DSP, video stream processor and video control processor. Among them, the system processor is used for system control, connecting peripheral devices and audio processing. It has 8KB two-way set connection (Set-associaTIve) instruction cache, 8KB two-way group connection data cache, and Dual-MAC with DSP instruction extension. The video stream processor implements hardware adaptable variable length coding (CAVLC) and adaptive binary arithmetic coding (CABAC). The maximum frequency of the three CPU clocks can reach 160MHz. Mobile TV solutions Yuan Kaizhi said that the advantage of the multi-core architecture is that it can enable different application processors to operate in parallel, and divide the labor in the video, audio, and image processing processes in order to achieve the best processing mode. It can integrate one or more system processors to complete system control and middleware applications such as audio and video synchronization, error handling, media control, streaming media, and digital rights management. "The multi-core SoC architecture has the advantages of software scalability and hardware scalability. In addition, because software and hardware can be flexibly called, it can also support different standards. Before the mobile TV standard has not been determined, this is quite beneficial for protecting corporate investment. of." It is worth noting that the designer selected the ARC600 digital audio platform provided by the configurable core supplier ARC to develop the VF1000. Yuan Kaizhi explained that this is because the ARC600 core can provide the lowest power consumption per MHz among the existing CPUs on the market, and has certain advantages in size. As for why not choose an ARM core that is more familiar to Chinese engineers, he said that the ARM core is indeed very easy to use, and there are no engineering difficulties other than software support. "But we will encounter many challenges in system integration." He said, "After all, we need faster, smaller and lower cost CPU." Backed by the huge local market, China's independent standards are receiving more and more attention. Yuanjian Technology has also caught up with this trend. The VF1000 has been able to achieve QVGA quality AVS video decoding (30 frames per second), and it also supports the DMB-TH standard. Yuan Kaizhi is very optimistic about the prospects of local standards. He believes that although MPEG-4 / 2 is still the mainstream in the mobile TV, IPTV and PMP markets, compared with H.264 and AVS, the excessively high cost and low picture quality are undoubtedly the hardships that it cannot compete with. hurt. "As a global standard, H.264 will fully surpass MPEG-4 / 2 around 2009. It is only a matter of time before Chinese local standards take off, it will surpass MPEG-4 / 2 by 2010 "Yuan Kaizhi said. From the technical parameters alone, the VF1000 seems to have exceeded the demand of mobile TV for video decoder. In fact, due to providing corresponding IP for various applications, thus forming a platform concept, VF1000 has been able to apply to many terminal devices related to video decoding. Other application examples of VF1000 include: embedding it in special glasses to realize the visual experience of immersive TV programs; it can be used for SDDongle, which is a portable product similar to the shape of a flash disk, which can help when plugged into a USB interface Notebooks and other mobile devices without integrated decoder chips receive digital TV signals. In addition, due to the various interfaces, the VF1000 also implements IPTV-On-The-Go and can turn the electronic photo frame into a digital entertainment screen. Allegedly, the company is also in contact with major fashion companies to discuss the possibility of cooperation to launch watch TV. However, Yuan Kaizhi still emphasized that mobile TV and mobile TV are still the focus of its current market development. Although the launch of the VF1000 is not very long, Yuan Kaizhi said that there are 7 to 8 customers under negotiation, and there are currently three locked, from Japan, mainland China and Taiwan. In addition, the company is also working with Weiwang Technology Suzhou Co., Ltd. to develop a system-level solution using the latter's receiving chip, and will meet with customers as soon as October. It is reported that, following the VF1000 decoder, the codecs of the VF1500 and VF2000 models are also under development.
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