An optical disk physical has a recording region divided into zones, each zone including physical tracks adjacent to each other. An integer number of sectors are provided in each physical track. The angular recording density is higher in the more outward zones such that the linear recording density is...http://www.google.com.tw/patents/US20010012252?utm_source=gb-gplus-share專利 US20010012252 - Optical disk and optical disk drive device
