1. 1 STB for Interactive TV 1998. 2.13 Jong-Uk Kim Humax Co. LTD.

2. HSN ‘98 Humax Co. Ltd. 2 Set-Top Box Content Provider System Service Provider System Satellite Fiber WAN Satellite HFC LMDS MMDS xDSL NIU (QPSK, QAM, VSB, OFDM, DMT) Human Machine Service Consumer (TV, VCR, PC) Terrestrial PSTN STU (MPEG-2, ATM, Video, Audio, Graphic) STB Service Consumer System

3. HSN ‘98 Humax Co. Ltd. 3 Satellite IRD (STB H/W) Satellite Tuner DISH QPSK Demod. MPEG-2 A/V Decoder MPEG-2 TS Demux. FEC Decoder OSD Controller Audio DAC Video Encoder CVBS RGB S-Video L R CAM LNB CPU. LCDIR Peripheral Control ASIC. IIC Controller Smart Card RS-232 IEEE 1284 DRAM 512KB SDRAM 2MB DRAM 1MB Flash Mem 1MB 2400bps Modem

4. HSN ‘98 Humax Co. Ltd. 4 Network Interface n Terrestrial ä OFDM, VSB ä UHF, VHF, HDTV ä No Return Channel n Satellite ä QPSK ä Ku-Band, Ka-Band n HFC ä 64-QAM, 256-QAM (for Broadcasting and IB Data) ä QPSK (for OOB Downstream and Upstream) n MMDS / LMDS/ LMCS ä QPSK or QAM ä 2.5GHz (MMDS), 28GHz (LMDS), LMCS (40GHz) ä Return Channel n xDSL ä CAP or DMT ä using old PSTN, ADSL, VDSL

5. HSN ‘98 Humax Co. Ltd. 5 Set-Top Unit n MPEG-2 Demultiplex ä SI(Service Information) Processing ä PID Filtering ä Stream Synchronization n MPEG-2 A/V Decoder ä MPEG-2 MP@ML ä Teletext, Subtitle, OSD n Conditional Access System ä Descrambler ä Conditional Access Module ä NDC, SECA, Irdeto, Viaccess, SA, Nagravision n CPU ä 68K, MIPS, ARM, PowerPC n Peripheral ä SmartCard, PCMCIA, Parallel/Serial Port ä IEEE 1394, SCSI

6. HSN ‘98 Humax Co. Ltd. 6 Interactive Service n Entertainment ä Pay-TV, PPV, NVOD ä MOD, Music On Demand, GOD, KOD, Delayed Broadcasting n Information ä Internet Access, NOD, TV Listing, On-line Service ä Content Production, Virtual CD-ROM n Home Office ä Telework, Distance Learning n Electronic Street ä Teleshopping, Home Shopping, Telemedicine n Communication ä Video Telephony, Video Conferencing, E-mail

7. HSN ‘98 Humax Co. Ltd. 7 STB for Interactive Service n Requirements ä Flexible Network I/F: Satellite, Cable, LMDS, Terestrial ä Return Channel: 56K Modem, Cable Modem, ADSL, LMDS ä Large Memory: 8MB - 16MB (compared to 1MB - 2MB) ä Mass Storage: 1GB - 2GB internal HD, External Interface(EIDE,SCSI) ä High-Perform. Processor : >100MHz RISC Processor ä High-Perform. Graphic: 2D-, 3D-Graphic, Full Color, TV Display(Flicker, Alias) ä Audio: MPEG-2, AC-3, MIDI ä User I/F: Wireless Keyboard, Laser Pointer, Joystick ä Connectivity: IEEE 1394, USB, SCSI, EIDE, 10/100 Base-T ä CAS: NDC, SECA, Irdeto, Viaccess, SA, Nagravision ä Etc.: Smart Card, PCMCIA, CI ä Operating System: WindowsCE, Java OS ä Middleware: OpenTV, Mediahighway, Java VM ä S/W: Web Browser, TCP/IP

8. HSN ‘98 Humax Co. Ltd. 8 Interactive Cable IRD (STB H/W) Diplex QAM Demod. MPEG-2 A/V Decoder MPEG-2 TS Demux. FEC Decod. Graphic Controller Audio DAC Video Encoder CVBS RGB S-Video L R CI (PCMCIA) CPU. LCDIR Smart Card RS-232 IEEE 1284 DRAM 512KB SDRAM 2MB DRAM 8MB Flash Mem 2MB FEC Encoder QPSK Demod. FEC Decod. ATM Dolby AC-3 QPSK Modulator SPDIF Wireless Keyboard Joy- stick IEEE 1394 USB Ethernet Controller 100 Base-T SCSI

9. HSN ‘98 Humax Co. Ltd. 9 Interactive TV (STB S/W) Application TeleBankingPPVTV GuideWeb Browser MHEG InterpreterClass LoaderScript InterpreterEvent ManagerAuthenticatorDown LoaderLibraries Device Driver SCARTPCMCIASmart Card Modem EMMService Information DemultiplexingVideoSound Tuner IR RemoconSerial DSM-CC U-NMPEG Stream GameHome ShoppingNVODVideo TelephonyDistance Learning Middleware (OpenTV, Java VM, Run Time Engine) Real Time Operating System (pSOS+, OS-9, VxWorks) File SystemGraphicTCP,UDP/IPSchedulerMemory ManagementProcess Management DSM-CC U-U IPCInterrupt ECM Descrambling MemoryLCD Key BoardMAC JoyStickIIC

10. HSN ‘98 Humax Co. Ltd. 10 Examples n Canal+ ä MediaHighway+ ä Java VM, MHEG, DSMCC, Web Browser ä Philips & Sony (4Q 1998) n TPS ä OpenTV1.1 (Thomson & Sun) ä Common Interface n WebTV plus ä Philips, Sony, Mitsubishi ä 56Kbps Modem, 1GB HD n Enhanced TV ä Oracle ä Navio Web Browser

11. HSN ‘98 Humax Co. Ltd. 11 Remarks n TV -> PC or PC -> TV ä Higher Possibility of (PC -> TV) ä PC will be remain PC n NC ä NC for Office -> will be progressing ä NC for Home -> may be included in STB n TV + STB ä Interactivity will not be included in TV n STB ä Will be More likely to NC ä Will be major Multimedia Home Consumer