| Mika Mizutani | 6th Research Department, Systems Development Laboratory, |
| Damien Le Moal | 3rd Research Department, Systems Development Laboratory, |
| Hiroaki Washimi | 2nd Group of Digital Media Department, Digital Media Solution Operations Division, |
| Masanori Hashio | Digital Media Department, Digital Media Solution Operations Division, |
With the popularization of AV equipment incorporating HDDs, DVD/HDD recorders, plasma TVs with built-in HDDs, broadband PCs, etc., "time shift viewing" —where recorded pictures are viewed off the hard disk—is becoming commonplace. In contrast to recording media like videotape, an HDD allows read and write operations to be executed simultaneously. Accordingly, recorded programs can be watched while being recorded, and multiple programs can be recorded simultaneously. From now onwards, applications for enjoying recorded programs over networks will also become more popular. Hitachi has developed and is commercializing two middleware solutions that provide applications with hard-disk utilization adapted to the features of high-definition-image content: (1) a stream manager for enabling simultaneous handling of continuous flows of data ("streams") between various hardware components and HDDs, and (2) an "AV-use File System" for assuring data transfer rate of image contents. Applying these two middleware solutions enables HDTV images to be handed simultaneously, reduces the processing cost of AV equipment, and offers high functionality.
 | The Hitachi Hyoron (Japanese Only) |
| News Release (Japanese Only) |
| Prius World (Japanese Only) |
stream manager, AV-use file system, optimization of I/O processing, simultaneous handling of high-definition images
