According to example embodiments, a semiconductor device may include a high electron mobility transistor on a first region of a substrate, and a diode on a second region of the substrate. The system provides simultaneous transmission of a plurality of uniquely identified, independent data streams within an assigned channel bandwidth of local, metropolitan and wide area distribution media. The supporting structure is disposed at the storeroom and has a flexible sheet, a first supporting-part and a second supporting-part. One of the motion vector candidates is then selected as a predictor based on predefined rules, or the selection is explicitly signaled in the bitstream. The data storage device comprises a circuit that stores data in the unused block portion. According to the method of the invention, after the burst transmission is begun, the burst is maintained active as additional data is selected within a known time period following the previous detected data packet and the detected data is appended to the active burst transmission.