Push Vod will extensive to use

Push Vod:
"Push Vod" can be used on any digital TV system (DVB-SH,DVB-T,DMB-TH,ISDB-T,CMMB,DVB-C,DVB-S,DVB-S2,ABS-S etc.).It use data broadcast to push Video files (also can push other kinds of flies) to users.
"Push Vod"'s transmission speed is more faster than real time of video stream.The transmission speed is about 4Mbps or faster
Now,all of "Push Vod" use H.264 video and AAC audio code.Also have HDTV and SDTV.
"Push Vod" usually use conditional access (CA).So the user of not authorized can't receive the "Push Vod"'s data stream,and  can't play the received files.
All of the received files is encryption,not a standard video file.User must install the smart card into the Set-Top Box or TV  set (if the TV set support digital TV receive) ,or other digital TV receive equipment,and the user's smart card has been granted for the channel and the program,so can open the file and watch the program.
Each user's smart card have unique number.
User's receive equipment must install a harddriver or usb disk or SD/MMC card to save the received files.
In the disk for received files,the directory structure is "/The name of the channel/Date of received/received files"
When a received file have not received complete,when the TV station repush this file at another time, can go ahead to receive this file.