Joker TV hardware functional testing with OpenHTF Functional Testing of PCBs is always used as a final manufacturing step. Functional testing provides making a decision to go or not to go on finished PCBs. Manual functional testing of one Joker TV assembled PCB takes about 5 minutes. I have decided to automate this process with […]
Following TS dumps created on January 2018 in Changsha, Hunan Province, China. DTMB dump (722MHz) sands-722mhz.ts (50MB) This stream plays without problems by ffplay, vlc, etc. DTMB dump (754MHz) sands-754mhz.ts (50MB) artifacts if we try to play: ffplay sands-754mhz.ts cavs video codec reported: Stream #0:13[0x17d]: Video: cavs (B[0][0][0] / 0x0042), yuv420p, 720×576, 25 fps, 25 tbr, […]
Hello everybody! This post describes how Common Interface (CI) works on Joker TV device. Common Interface (CI) is required for descrambling (decrypt) TV channels. Usually operators do the encryption for paid TV content (not free content), and end users have to buy Conditional Access Module (CAM) and smart cards for decryption. Smart card should be […]
Hello everybody! This post describes how Transport Stream dataflow within the Joker TV universal USB DTV receiver. All described functionalities are written on Verilog and run on Altera FPGA (EP4CE22F17C8N). The firmware is fully open source and can be found here. I have also prepared the following diagram for a better understanding: As you can […]
Hello everybody! This post describes satellite transponders (DVB-S/S2) blind scan with Joker TV’s universal USB DTV receiver. Firstly, I will show you the blind scan results and other cool stuff that you can get. Below are the technical details. DVB-S/S2 blind scan with Joker TV Blind scan is a useful feature for when you want […]
Hello everybody, this post describes data transfer over USB from Joker TV to a host using high bandwidth USB isochronous transfers which has bitrate 3 times higher than regular USB isochronous transfers. High bandwidth USB isochronous transfers Regular isochronous USB transfer contains only one data packet (DATA_0) per microframe (125 usec) and can achieve 62.5 Mbit/sec […]
Hello All, Compile driver and apps under Mac (OSx) If you are looking for an already compiled (binary) drivers and apps please use this link. If you are looking for compilation manual for Linux please use this link. If you are looking for compilation manual for Windows please use this link. Preparing build environment (brew) […]
Hello All, Compile driver and apps under Windows OS If you are looking for an already compiled (binary) drivers and apps please use this link. If you are looking for compilation manual for Linux please use this link. If you are looking for compilation manual for Mac(OSx) please use this link. Preparing build environment (MSYS2) […]
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Hello All, Today I want to show you how Joker can be used for speech recognition and speech synthesis using neural networks and Joker Empathy module. I have brewed two docker containers for super simple usage. Just one command required to run neural network and obtain the results. This tutorial should work on any Linux and OSx […]