How make HDMI to LAN extender? - Page 1
Forum section: electronics / projects

author: seyedsaeed
author_rank: Regular Contributor
timestamp: January 08, 2024, 06:27:46 am
content: HiI want to make Hdmi to lan extender.How do you think I can make it?Microcontroller or FPGA?

author: darkspr1te
author_rank: Frequent Contributor
timestamp: January 08, 2024, 06:46:22 am
content: Quite a few chip makiers actually produce a HDMI to IP chip, normally only needing some magnetics to complete.example areIT6604E +LK-3080-ACL combo in the lenkeng hdmi to network adapters.darkspr1te

author: seyedsaeed
author_rank: Regular Contributor
timestamp: January 08, 2024, 08:33:43 am
content: Quote from: darkspr1te on January 08, 2024, 06:46:22 amNOLAN to HDMI and HDMI to lan

author: darkspr1te
author_rank: Frequent Contributor
timestamp: January 08, 2024, 08:40:19 am
content: I dont understand the reply.

author: seyedsaeed
author_rank: Regular Contributor
timestamp: January 08, 2024, 08:48:42 am
content: Quote from: darkspr1te on January 08, 2024, 08:40:19 amhttps://www.amazon.in/Terabyte-Extender-Ethernet-Transmitter-Converter/dp/B091762G7Q/ref=sr_1_3?keywords=lan+hdmi+adapter&qid=1704703676&sr=8-3

author: Haenk
author_rank: Super Contributor
timestamp: January 08, 2024, 09:00:15 am
content: I guess that's only an electrical adapter, just ignoring some data exchange and shielding lines of the "real" HDMI plug.This will probably only work on rare occasions, if at all. Attaching a BD player to your 4k TV? Forget it.

author: darkspr1te
author_rank: Frequent Contributor
timestamp: January 08, 2024, 09:23:49 am
content: Quote from: seyedsaeed onTodayat 10:48:42 amThats is more of HDMI to RJ45 cable adapter, it's passive and only works for 1080p max and wont function through a switch of any type , you will also get lots of noise and in some cases no signal (i have this exact model and it only works on my old PS3, anything newer like my Nvidia shield it wont work, anything that uses HDCP wont work)When you said HDMI to LAN extender I assumed you wanted LAN functions (IP packets transmission, IP address etc) so the data can be routed via a TCP/IP switch for example.Hence me mentioning Lenken for their HDMI to TCP/IP LAN adapter chips as apposed to a MCU or FPGA.darkspr1te

author: seyedsaeed
author_rank: Regular Contributor
timestamp: January 08, 2024, 09:54:33 am
content: Quote from: Haenk on January 08, 2024, 09:00:15 amhttps://www.amazon.com/LUKFOCAB-Extender-Ethernet-Supports-Transmitter/dp/B0CMCV23F4/ref=sr_1_1?keywords=ethernet%2Bto%2Bhdmi&qid=1704703700&sr=8-1&th=1

author: coromonadalix
author_rank: Super Contributor
timestamp: January 08, 2024, 11:00:01 am
content: Can even go with fiber optic optionhttps://www.techreviewer.com/learn-about-tech/hdmi-over-fiber-optic/

author: Haenk
author_rank: Super Contributor
timestamp: January 08, 2024, 06:35:36 pm
content: Quote from: seyedsaeed on January 08, 2024, 09:54:33 amThis still is no LAN adapter, it *uses* a LAN cable. Like my old Siemens telephone system.At around 25 bucks, this looks suspiciously cheap, I'd really like to know what is in there (maybe only line drivers, that would explain it...)

author: sparkydog
author_rank: Regular Contributor
timestamp: January 08, 2024, 07:05:16 pm
content: Quote from: seyedsaeed on January 08, 2024, 06:27:46 amNeither. Also...Quote from: seyedsaeed on January 08, 2024, 06:27:46 am...if you have to ask, you can't.BasicHDMI bandwidth is 5 Gbps. 10 Gbps LAN exists, but is still pretty "high-end" as far as consumer stuff goes. More modern HDMI standards go up to 48 Gbps, which means you'd need a 100 Gbps LAN to carry that. Now, that doesexist, but the controllers for it are hundreds to thousands of dollars and generate significant heat.Your other option is to compress the snot out of the data stream, which requires either an ASIC or a higher-end GPU.In other words, the answer to your question is "buy a computer with a capture card". Then either toss a good GPU in it, or a 100 Gbps network adapter, and stream the capture onto the network. Decoding is left as an exercise to the reader. The latency is probably going to be significant.In no case are you going to be able to handle the necessary bandwidth with a commodity MCU or FPGA. The sorts of chips that can wrangle that much data are big, expensive, complex ASICs that generate significant amounts of heat.

author: Spar59
author_rank: Contributor
timestamp: January 08, 2024, 09:25:12 pm
content: First an apology as my answer is not a how-to.Going back some years I used to make much of my own equipment, but the cost of components and the difficulty of handling and soldering small modern surface-mount devices combined with the advent of global markets, where ready made equipment is often available for less money than the components would cost, has led me towards ready made units unless I want something special.In the specific instance you are considering, the high frequency signals can make circuit layout important, possibly needing a number of prototypes and hence more time and cost.So unless you have all the necessary equipment for PCB production and assembly and are really wanting to make your own for the sheer hell of it I would go for one of the ready-made solutions on the market.These come in 2 flavours:1) A transmitter and receiver pair that allow transmission of a HDMI signal point to point over twisted pair (cat5e or better) cable, these being the cheaper version.They have different levels of performance, price not necessarily being an accurate indicator, some allow for remote infra red control some varieties, note that some require 2 cat5e cables for the link.I have previously used these successfully over about 30 metres at 1080p.I connected 4 monitors to a security system DVR, a 4 way HDMI splitter on its HDMI output, a direct HDMI cable for local monitor and 3 HDMI over cat 5e transmitter-receiver pairs for the remote monitors.2) A true Ethernet solution that can pass over an existing data network, but bandwidth could be an issue and they are not cheap.Many of these can transmit to multiple receivers, or more correctly multiple receivers can accept the signal from a single transmitter.