Differential Manchester Encoding Puns

Recently learned about differential manchester encoding.

From what I understand, is that line encoding schemes like this are used to encode digital bitstreams, as in noisy systems, it's supposedly easier to detect a transitions vs. assuring a specific voltage level. The wiki link states that the extra transitions afforded by something like differential manchester encoding "makes synchronization easier".

Can anyone give an ELI5 why this makes synchronization easier? I assume it's meaning clock recovery at the receiver, but not sure why extra transitions makes it so much easier.

Hello,

in my understanding in manchester-encoding both data and clock is combined and in one clock phase one bit is sent - in each clock-phase one bit is written. This way, the receiver can figure out how fast the sender sends the data (because one clock phase each holds a bit).

What if the sender sends too fast? Imagine the receiver has a really slow internet connection how do they synchronize clock speed according to the sender?

Hey yall.

The signals below are from two different transmission, but I've aligned them to be synchronous.

Is this typically Manchester encoding I'm seeing?
Me n00b.

https://preview.redd.it/400o1v7mu3041.png?width=1807&format=png&auto=webp&s=45be1f7de0e0eacfd0a8f92709d1477ecb403e2d

Hello everyone.

Well, I'm currently trying to understand line codes. I just finished to study the Manchester Line code. And I used this video https://youtu.be/LtLlMiPjUpI to calculate the PSD of a Manchester-shapped signal. But, I discovered that it exists a differential version of Manchester. However, unlike the simple Manchester, I don't find any mathematical formulation of the differential Manchester line code.

So I was wondering: How can I calculate the exact expression of the PSD of a signal shapped with a Differential Manchester line code ?

Thanks

I've just saw this video. It says that on the beggining of the connection 56 alternating 1s and 0s but I'm still wondering if that's the only safety check. Shifting the frame of a bit by half of the phase would switch their values. Also there's Differential Manchester Encoding mentioned in the Wiki article about ME (as an alternative?). Is my understanding correct that it requires a separate clock signal to work correctly?

I am interested in Bike Shares in various cities. What I know as of now is that they use Low Frequency RFID Tags/Readers but I researched and I have to write Manchester Encoding? What exactly is that?

A bit of backstory: this just came up as a question in a prelab for a 3rd year embedded subject and just out of my friends and I we couldn't come to an agreement. https://i.imgur.com/bm3jXuz.png

Now whilst Manchester encoding is most commonly used is a synchronous fashion it is merely an encoding scheme that yes is commonly used in a synchronous manner. However from my point of view you could define a communication protocol which has indeterminate time divisions between transitions and still use manchester encoding.

Basically I'm saying it doesn't make sense to talk about an encoding scheme as synchronous or asynchronous without more detail. Like how ethernet has been called "bit synchronous, frame asynchronous" and whether its using something like Manchester encoding such as in the 10Base-T standard has no impact on it being (a)sync.

Could any experts lend their views/criticisms on my points?

Streaming virtual reality over wifi is becoming the most common way of playing pc vr mainly because the popularity of oculus quest 2 which can be seen on steam hardware survey. The issue with this is that streaming vr over wifi requires the game video to be encoded pc side. Without a separate video encoding engine this will be done on the 3D engine together with CPU.

And the video encoding can not be offloaded to integrated graphics because that creates too much delay and steamvr can simply not run that way.

This means that some gpu 3D usage will go towards encoding video instead of rendering the game and therefore less fps.

Something to keep in mind.

Twelve days ago, the Timberwolves defeated the Grizzlies by a margin of 43 points, the largest differential of the NBA season up to that point. Today, the Grizzlies paid it forward and defeated the Thunder by a margin of 73, the largest point differential of the NBA season up to this point -- and the largest point differential of any NBA game ever.

The previous largest point differential in an NBA game was set by the Cavaliers against the Heat by a margin of 68 points on December 17, 1991.

Tonight's disgusting box score

I mean, in general, it's a bit pricy. But the cost of encoding audio is absurd. Here's a comparison:

We'll say someone uploads 15,000 audio tracks, and each one is 5 minutes long.

15,000 x 5 mins = 75,000 mins x $0.003 = $225

Compare that to a Lambda function using ffmpeg:

15,000 x 15 secs (worst-case scenario for Lambda duration) = 225,000 secs x (2048/1024MB) = 450,000 GB-s x $0.0000166667 = $7.50

So, a $217.50 savings by using Lambda vs MediaConvert. Yikes! The only reason I can imagine someone using this over Lambda would be ease of use. You don't have to figure out ffmpeg's complex parameters, you don't have to write a Lambda function. No worries about timeouts or other gotchas. But I dunno.. is it worth it at 30x the cost?

I'm writing a paper on Networking, and it is critical that I explain encoding in a network. Now, I literally cannot find anything on this that doesn't explain it like I'm a certified network engineer, so can someone explain it like I'm a 5 year old?

Falcons: -116

Lions: -113

https://www.espn.com/nfl/standings

9 NFL teams (Dolphins, Chargers, Broncos, Browns, Ravens, Colts, Seahawks, Vikings, and Saints) missed the playoffs with a better point differential than both the Raiders and Steelers. The Colts had the best point differential of these teams, at +86.

Tried recording Minecraft, my FPS drops from 60 do 40 depending on the scene which is reasonable I guess, but I can't seem to find a solution to the high encoding lag... I've seen other people pull of great quality video and performance with similar systems. What am I doing wrong?

LOG file: https://obsproject.com/logs/LiMG6Z-VLol-1BG1

My specs are:

16GB RAM

i7 2600k

GTX 1060 6GB

OBS says that the CPU usage is around 6-10% and in the Task manager the GPU/CPU/RAM doesn't go above 60% (I am aware that Windows has to get it's own share of all of those unfortunately)

I am pretty sure my recorded video goes onto the SSD which is supposed to help, at least that's what I heard.

Any other instances of this happening?

Their lone win was 56-7 against Northwestern. All of their other B1G games were single digit losses.

Final tally 239-239.

This is my first robotics project and I made a pretty underdeveloped prototype with one sensor and an Arduino Uno that turned when it saw an obstacle (didn't have a video of any successful run). I since got the parts to make it much more useful, but the actual construction Is not totally finished.

I believe I'd like its ultimate goal to be a sort of implementation of a bug algorithm, but I'd like its first goal to be wall following. Essentially, I'd like it to approach my couch, for instance, maybe pick a random direction, and follow the edges of it all the way around while maintaining a certain distance. Ideally, it would do this for all solid obstacles of any shape until it arrived at a destination or alternatively, it would continue to randomize its path avoiding obstacles along the way with no particular objective (Roomba-style)

I have the basic programming experience to program such a thing, but I lack any comprehensive understanding of implementing algorithms for mobile robots. I also have a pretty comprehensive knowledge of first-year university physics and calculus

I'm not expecting someone to explain in exact detail, but I'm not really sure where to start with implementing this kind of algorithm. I need a resource that could point me in the right direction in terms of learning an efficient way to do this assuming little to no algorithmic knowledge.

https://www.nba.com/stats/players/advanced/?sort=NET_RATING&dir=-1&CF=MINGE30:GPG25&SeasonType=Regular%20Season&Season=2021-22

1. Curry - 13.8

2. Gobert - 13.2

3. Jrue Holiday - 11.0

4. Giannis - 10.7

5. Garland - 9.9

6. Jokic - 9.3

7. D'Angelo Russell - 9.2

8. CP3 - 8.7

9. Bridges - 8.6

10. Wiggins - 8.6

11. DeRozan - 8.6

12. Mitchell - 8.5

13. Patty Mills - 7.9

14. Booker - 7.9

• Notable people missing in the top 15: Embiid at 6.9 and KD at 4.2

• The gap between 1st and 3rd place (Curry vs Jrue) is the same as the gap between 14th place and 4th place

• Both Curry, Jokic, and Gobert are far above their teammates, which suggests time and time again that they elevate the team at far higher level than people believe. The Warriors are net negative this season with Curry off the floor. And it is not the first time Curry has led the league in net rating despite not being on the top seed team, he's been top 5 consistently since 2014, excluding 2020 and 2021.

• Giannis has been the most consistent competitor in net rating to Curry

• Patty Mills, DLo, DeRozan, and Garland have also been killing it this season compared to their teammates

I use Nvidia NVENC (new). My CPU Ryzen 5 3600 and GPU is Nvidia GTX 1050Ti 4GB OC Edition. I tried to change encoder to x264, use different rate control, different bitrate, preset, profile. I switched from file location from HDD to SDD. Nothing helped - sometimes still small stuttering happen for a short amount of time - some frames are dropped. CPU and GPU still have much of power left unused and still it happens. Is it normal? Does it happen to you?

I'm trying to communicate using two 434 MHz RF transmitter/receiver modules and an antennae. But I learned that RF communication is noisy without using "manchester encoding." Now I'm VERY new to Arduinos and I haven't spent much time playing around with the actual microcontrollers or the libraries of code written on the arduino forums. I found this thread but I have no idea what to install, and where in my code. I would just like to be able to write a small amount of data without worrying which letters have more "transistions." Thanks in advance, and I know this is a super weird question but I would love any help you can offer here.

Do you know any simple macOS App like Apple's TextEdit that would extends its capabilities by detection of inconsistent characters (bad encoding etc.), line terminations and hidden characters / spaces?

It could be either free or "reasonable" priced App.

Typical usage:

• Encoding corrections including "bad" chars
• Text corrections when copying .docx, .pdf, .pages text to LaTeX code.
• "sorting" larger .csv data with errors.
• Replacing certain characters when changing a syntax from Python to Matlab and vice versa (eventually C++) - in this case, I do not require sytax highlighting.

Can't find anything that directly answers my question online, but does handbrake make use of the integrated graphics on an amd cpu like this one. Or would I be better off buying a cpu without integrated graphics.

The build will only be used for video encoding and doubling up as a plex media server, absolutely no gaming or anything else on it