“FSDTV® Middleware for IPTV” is provided in the software architecture described below. The system porting layer requires porting and customization in accordance with the OS/hardware where the middleware actually runs.

| Channel Selection Library | |
| The main functions of this module are to conduct the channel selection control and channel scan control. | |
| AV Library | |
| This module conducts the video/audio decode control, built-in sound playback and video/audio output control. | |
| PSI/SI Library | |
| This module conducts the reception control of the PSI section (PAT, PMT, NIT) and SI section (BIT, SDT, EIT, NBIT, LDT). | |
| ○ PSI section reception control function | |
| ○ SI section reception control function | |
| PES Library | |
| This module conducts the reception control of the independent PES (except video/audio PES) necessary to display subtitles/news tickers. | |
| ○ Independent PES reception control function | |
| Download Library | |
| This module conducts the reception control of DSMCC that is necessary when obtaining content information, software downloads, and all receiver-common information, which are necessary for displaying broadcasted contents. | |
| ○ Software/All model-common information download control function | |
| ○ Software/All model-common information download information acquisition function | |
| ○ DII/DDB reception control function | |
| ○ DII/DDB reception information acquisition function | |
| DRM Library | |
| This module has the following conditional access/digital right management functions, working together with a main library provided by a third party: | |
| ○ Descramble control function | |
| ○ License control function | |
| ○ CRL acquisition control function | |
| ○ CAS/DRM server communication control function | |
| ○ Time control function | |
| System Porting Layer | |
| This layer consists of libraries that absorb dependencies on OS/hardware, and requires porting work based on the target OS/hardware. | |
“FSDTV® Middleware for IPTV” provides all of the functional requirements for each functional module as API.
※IPTV Forum Japan Limited Liability Intermediate Corporation