Questions tagged [hdmi]

HDMI (High-Definition Multimedia Interface) is a digital audio/video interface.

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148 views

Merging two different HDMI cables

I have two brands of broken HDMI cables that I need to join to make them longer. Can't join them by color, because they are completely different. Plus, one of the cables has all the wires, the other ...
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1answer
40 views

HDMI Video to RCA Audio

Some 20 years ago I created an audiovisual art installation, connecting RCA Video output from a TV set to a HiFi system's audio-in, just plain via cable, in order to "hear" the video signal. ...
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1answer
119 views

HDMI cable sparks and shocked me [closed]

I just owned a desktop PC and as display I connected my TV through HDMI cable. Today I changed the HDMI cable to one that can handle 4K resolutions. So I disconnected the old HDMI cable and then with ...
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1answer
65 views

Help identify this SMD oscillator

This oscillator provides clock to an FPGA which powers the ultrahdmi mod for an N64 (https://www.retrorgb.com/ultrahdmi.html). It's clearly marked A03ZZ 1414 Clock output is diametrically opposite pin ...
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2answers
82 views

I accidentally bought an HDMI (male) to VGA (male) cable that isn't an adapter or converter of any sort. Does this product have any value? [closed]

I have a laptop with an HDMI port. I have a monitor with a VGA port. I wanted to connect the two. The website I bought this cable from labeled it as an 'adapter' so I assumed it would do the ...
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1answer
49 views

How can I prevent HDMI 5V (55mA) from entering a circuit?

I have a circuit which uses a camera with HDMI out and a HDMI to AV converter, as well as some other 5V components. The issue I have is that when the main 5V power source is off, but the camera is ...
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1answer
44 views

Control two different DPDT circuits with one DPDT switch

I have a HDMI switch (pictured below) and a USB 2.0 Switch both have dual inputs and a single output, with no external power input. Both from what I can see are switched via DPDT switch. What I want ...
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1answer
36 views

TFP401: 24-bit TFP401 to drive an 18-bit LCD panel, possible?

We would like to use this LCD panel as it matches customer dimensions perfectly: https://www.digikey.com/product-detail/en/sharp-microelectronics/LS037V7DW03A/425-2871-ND/4862435 This display has 6-...
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0answers
31 views

How to connect generic smartphone LCD screen to take HDMI input from e.g. laptop?

For a certain project that has a specific screen size requirement, I want to use a phone-sized screen (6") to take HDMI from a laptop. Here is an example product: https://www.amazon.ca/Digitizer-...
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2answers
49 views

Why do LED/OLED HD and UHD displays have “global refresh rates”?

What is the benefit to scanning vs. individually addressing and updating lines or pixels or screen areas? Is there a standard interface to the majority of HD or UHD displays that allows the ...
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0answers
34 views

What display interfaces do automotive screens use?

For example the screens inside tesla cars, I first think of HDMI, many high end embedded processor boards come with HDMI outputs, but is this connector found in actual mass production or industrial ...
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1answer
32 views

Controller for HDMI to 30-pin display connector converter

I need to design a circuit for HDMI to a 30-pin eDP adapter. Do I need to use some high-speed microcontroller that takes the signal from HDMI or forwards it to the eDP connector or is there some chip ...
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2answers
940 views

Routing power and HDMI signal into usb type-c for DIY computer monitor

I am starting a project to build a DIY monitor. I have a spare lcd panel (model # LP156WF6) taken out of a laptop. I plan on buying a controller board for it and building it into a homemade enclosure. ...
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2answers
822 views

HDMI Cable interfering with mobile phone network

Just had a "spectrum engineering officer" from OFCOM (the UK's communications regulator) visit our office investigating alleged interference from our building with a local cell phone tower. After ...
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1answer
76 views

Is it possible for an HDMI cable to be “worn in”?

I have an HDMI cable running thirty feet between my computer and a TV. I've had various problems with the screen flashing, stuttering, etcetera, due to the signal not being strong enough to carry a 4K ...
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1answer
66 views

Fullsize HDMI vs microHDMI, electrical considerations

I'm going to use an HDMI cable in an industrial setting to connect a screen to a Raspberry Pi. We are considering using the Pi 4 instead of the Pi 3 which we have been using earlier. The Pi 4 has ...
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1answer
70 views

Need help identifying solder point, Is it ethernet, usb, what is it

My end goal is to completely rewrite the flimware to create a super secure system. So what I have so far, I have a hdex0016m1 with 2 confirmed uart ports one in use and one nothing was currently going ...
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0answers
67 views

HDMI Development: What Would Cause Thin Pink Lines?

I recently designed a board which produces an HDMI output for an oscilloscope so it is viewable on an external monitor. My prototypes seemed to work just fine with one or two mod wires. However, after ...
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1answer
73 views

Why does this USB device draw different currents from different sources?

What would cause a USB device to draw drastically different amounts of current, but still function properly? Background & Research: I purchased a Playstation 2 Graphics port->HDMI converter (...
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1answer
78 views

HDMI splitter @ 4K [closed]

I want to make HDMI splitter which support 4K resolution, I have already found some IC's which are cable for splitting HDMI, but unfortunately non of them supported 4K and they only supported 1080P/...
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1answer
19 views

Which are the physical factors that determine the maximum transportable resolution of a cable (for instance: HDMI)?

Which are the physical and electrical factors that determine that an old generation HDMI can transport for instance 1080p resolution, while a new HDMI (2.0) arrives at 4k? Is it due to a different ...
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3answers
99 views

Split hdmi signal the passive way

I would like to know if it's possible to split a HDMI signal (generate by raspberry pi or equivalent) to a deserializer (TFP401APZP) and to a micro HDMI. I have a source going direct to the TFP and ...
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2answers
148 views

Determining Blanking for HDMI Transmitter

I am working on a project which produces a video output over an HDMI connector. The driver I am using is the Texas Instruments TFP410PAP. The image I am attempting to display is WVGA, 800 x 480 ...
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1answer
501 views

Useless pins in HDMI cable?

In order to connect two small electrical circuits, I needed 17 pins. Because of its availability and compact form, I chose the HDMI connector. The two circuits are connected using an HDMI cable that ...
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1answer
201 views

HDMI/USB Powered Lighting

Alright so a little vague title but here it goes. I'm interested in powering some 5v LED strips with an HDMI cable. I have no idea if this is even possible, I'm lacking knowledge in electronics. My ...
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1answer
45 views

Location for placing ESD components for UHD video

I am implementing ESD protection for HDMI video input. The HDMI video goes through a custom cable of ours, into a connector board attached to our enclosure, through an edge card connector, into our ...
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1answer
319 views

What are the minimum FPGA feature requirements for decoding and encoding 4k60 HDMI signal [closed]

I want to build a prototype device that manages to do the following: Take a HDMI signal with at least 4k resolution at 60fps (for simplicity without DHCP for now,) change a few pixels (say a red ...
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1answer
29 views

Why would sdi to hdmi work, but not when I convert sdi to hdmi to dvi [closed]

I am transmitting video over sdi and converting from sdi to hdmi with an aja Hi5. This works, but if I convert that hdmi output into dvi, the output is either not detected, or constantly connects and ...
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0answers
468 views

PCB HDMI high speed routing suggestions on my layout

I would like to get suggestions from all the high speed PCB layout experts on my PCB design. I have a board with HDMI transmitter IC whose output is going to HDMI switch IC. The switch IC also has ...
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1answer
208 views

HDMI Switcher for analogue audio? [closed]

I ordered a 5 to 1 HDMI Switcher with remote. I was looking for the lowest price way to switch analogue audio RCA/3.5mm stereo. At the time I ordered this my decision was based on the availability of ...
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2answers
943 views

How to achieve 100ohm impedance for HDMI differential pair on FR4?

I have a 6 layer FR4 PCB, and want to achieve 100ohm impedance on HDMI differential pairs. I am only using top and bottom layer for differential pairs, and following are my parameters: Trace width= 3....
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1answer
229 views

Treadmill causes nearby electronics glitch

I don't know if it is right place to ask, if not correct/guide me. I recently have built treadmill workstation, where I could walk and work (rather than just sitting). But as soon as I turn on ...
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1answer
279 views

HDMI to CSI Converter for raspberry pi [closed]

I am creating a HDMI to CSI converter, but i dont know if the wiring is correct and if i need to add any passive component. can you guys help me out? EasyEDA Project
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1answer
840 views

Problems wiring USB-C receptacle [closed]

(First, sorry for my English :_D) I'm doing a school project and I wanted to swap a male/plug USB-C to a USB-C female/receptacle. I thought it was just soldering the cables onto the board and it's ...
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2answers
7k views

How does an optical (toslink) to HDMI cable/converter work?

I'm looking at the small Sonos optical audio (toslink) -> HDMI cable in front of me and I don't know how it works (https://www.sonos.com/en/shop/optical-audio-adaptor.html). It has an optical audio ...
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0answers
159 views

How do passive boosters/repeaters (such as a HDMI 'booster') work?

I have a HDMI device and I want to connect it to something very far away. I notice you can buy a HDMI booster to do this, but some of them are unpowered (they take no external power). How can a signal ...
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10answers
12k views

Can a premium HDMI cable outperform a standard cable?

Assuming two cables both conform to the same standards (e.g. HDMI2.0, high-speed, ...) is it possible that a premium cable will outperform a standard cable when using an objective benchmark that ...
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0answers
44 views

HDMI active switch, no switching delay

I've been trying to connect 3 HDMI sources to one endpoint. When using analog muxes it takes about a second for the devices currently connected together to reinitialise communication after switch. ...
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1answer
68 views

Why would data transferred through an extension cable be different [closed]

This is something that has been bothering me especially when dealing with the latest cables made for DisplayPort or HDMI. I understand that issues can occur with adapters since you might be dealing ...
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2answers
792 views

What is the relationship between a 10:5 Gearbox and a 5:1 OSERDES2?

I'm trying to understand the HDMI implementation in Xilinx application note XAPP495. In especially, I don't understand the diagram below where there are connections between gearboxes and oserdes2. ...
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1answer
250 views

What is the difference between MCU and TTL screens? [closed]

I'm trying to build a HDMI decoder board for a 4in 480x800 IPS display. I found an HDMI decoder board on adafruit(https://www.adafruit.com/product/2218) which says it works for most 40pin TTL displays....
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1answer
143 views

What is the purpose of fifo in serialize of HDMI?

I'm trying to understand and study about HDMI. currently I'm referring with here (https://www.fpga4fun.com/HDMI.html). But I'm confused that why does that fifo need for higher resolution? in case of ...
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1answer
207 views

How do we know off-screen area in TV?

I'm trying to implement HDMI to FPGA and vice-versa. Currently I'm referring with https://www.fpga4fun.com/HDMI.html site. But I'm confused that "But video signals usually also have an "off-screen" ...
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1answer
419 views

HDMI Receiver Sense Logic and TMDS Capacitor Coupling

Does anybody know how is the "receiver sense" logic done? As the datasheet for Sil9612 4K video processor puts it in section 2.13.8 "receiver sense and hot plug detection": it is "by sensing the ...
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2answers
135 views

Do HDMI/DVI and DisplayPort transfer only differences or full frames?

Let's assume I have a static computer desktop on my external display that is attached by HDMI (or equivalently, it could be attached by DVI, as DVI and HDMI are compatible). The 60Hz picture doesn't ...
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1answer
84 views

HDMI Through Hole Layout Issues

So this is my first post so please forgive me but inform me if I'm breaking any forum rules. I'm trying to layout a through hole HDMI connector in Eagle. The issue I'm running into is that the gap ...
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0answers
189 views

What is the role of DE input of ADV7511 HDMI video controller?

I need to understand the data, DE, VSYNC, HSYNC and CLK inputs of ADV7511 video controller. I need them to program FPGA card (Xilinx Kintex KCU116) that has this video chip. FPGA manual says it uses ...
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1answer
52 views

FPGA Atlys Spartan 6 output predefined image or string through HDMI

I need help with displaying a short text on a hdmi display connected to the board (2 characters), I have already experimented with xapp495 but I still don't know how to do this. I understand that it ...
2
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1answer
166 views

Narrowing line of differential pair for DVI connector

Is this a big problem with reflections (caused by missing impedance) if I'll trace differential pairs like it showed on picture? I'm designing DVI driving on freq not more than 640 MHz. How you can ...
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1answer
667 views

HDMI triggering the Ground Fault Circuit Interrupters via Projector

Overview: A colleague of mine took her HP laptop from Canada (19.5 V, 1.4 A DC rated) to work in Brazil and experienced ground fault trips on the outlets when she connected an HDMI to a projector ...