#wobulation

[mimikyufriend]

wobulous wob wednesday

[appliancesreviews]

Native 4K vs True 4K vs 1080p Pixel Shift in 4K Projectors

As known, fierce competition and new digital technologies have provoked an innovation revolution in the consumer electronics segment. Of course, high-tech projectors are no exception. As a result, companies radically expanded their functionality and improved almost all specs, including resolution, compactness, contrast ratio,, brightness, throw ratio, etc. Of course, the quality of image directly depends on the resolution, which, in turn, affects the detail and sharpness. Therefore, almost all leaders pay great attention to this aspect. As a result, today the market offers a fairly wide range of Home Theater 4K HDR projectors. For example, in 2019, the companies presented BenQ HT3550 (W2000), Epson HC5050UB, Sony VPL-VW295ES, etc.

Resolution

As known, devices use pixels for displaying an image on the screen. The screen of modern models contains millions and more pixels. The number of pixels affects the screen resolution of any device. For example, a screen of 1920 x 1080 (Full HD or Full High Definition or1080p) displays 1920 pixels horizontally and 1080 pixels vertically, creating a grid of 1080 lines. In turn, each row contains 1920 pixels. Accordingly, such images contain a total of 2,073,600 pixels (1920 x 1080).

In recent years, Full HD devices compete fiercely with the more expensive 4K models. But gradually, innovative technologies and new, more efficient processing algorithms reduce the cost of 4K models. Until recently, companies offered only 4K TVs. However, in the past few years, many companies began to produce relatively inexpensive 4K Home Theater projectors. But this is certainly a pleasant trend, has a slight drawback. Lack of unification and marketing considerations sometimes create confusion in terms. For example, today companies use several names simultaneously for their 4K models, including 4K-Enhancement, Native 4K, or True4K. Of course, the buyer has a reasonable question about the differences between these technologies.

Native 4K

As known, digital film projectors were the first to start using 4K resolution. These models supported Cinema 4K resolution (4096 x 2160). Such projector provides 4096 pixels horizontally and 2160 pixels vertically. Respectively, they do not use additional image processing and provide a resolution of 8.8 MPix or, more precisely, 8,847,360 pixels. For example, the Sony VPLVW285ES really suppots such resolution.

Such models use DMD (DLP technology) chips with 4096 x 2160 micromirrors or LCD screens with the same number of pixels in 3LCD projectors. Some projectors also use hybrid 4096 x 2160 LCoS chips with functions of DMD (Digital Micromirror Device, Texas Instruments) and LCD chips. Such models instantly pass the 4K signal without pre-processing. Unfortunately, these models have a high cost, which reaches $ 5,000 and more.

E-shift (1080p Pixel Shifting or wobulation)

The very popular Epson 4K-Enhancement 5040UB refers to e-shift projectors.

These Home Theater models are much cheaper. They provides playback of 4K content, but use DMD or LCD chips with only 1920 x 1080 pixels. Of course, the 4K playback requires an array with 4096 x 2160 micromirrors or similar LCD screen. But, the production of 4K chips requires very high accuracy, which increases their cost. Therefore, companies have developed a Wobulation (4K-Enhancement or Pixel Shifting or e-shift) technology that provides 4K resolution support using chips with a resolution of only 1080p or Full HD. Engineers solved this problem as follows. The projector processes and splits 4K signal into two which a resolution of only 1920 x 1080 pixels. Then, the device alternately projects both pictures onto the screen. But these images are shifted half a pixel relative to each other diagonally. As a result, each pixel has a shift in relation to the pixel of the second picture.

But the viewer perceives these two Full HD pictures as one 4K due to high speed. In fact, the projector displays about 2 MPix x 2 in per cycle. Of course, the e-shift option does not support 3D mode, which also uses alternation of frames for each eye. In this case, the projector automatically disables the wobulation.

True 4K

True 4K supports lower resolution than real 4K. They provide the standard 2160 pixels vertically, but only 3840 (instead of 4096) pixels horizontally. Accordingly, their real resolution reaches only 8.3 MPix (instead of 8,847,360). Companies often call these projectors 4K UHD models. This value corresponds to the 4K TVs. True 4K projectors use two ways to create a projection. Two-Phase Pixel Shifting This technology is similar to e-shift. But, these models use a Texas Instruments 0.66" DMD chip with a 2716 x 1528 pixels. For example, Chinese JMGO U1 has such chip.

Such chip uses a matrix with 2716 x 1528 micromirrors. Each micromirror corresponds to one pixel. The algorithm transforms the input picture into two (4.15 Mpix each). Then, after shifting, it alternately displays two pictures. Of course, each picture contains half of the original. Accordingly, the viewer perceives a picture with 8.3 MPix, which almost corresponds to 8,847,360 native 4K. Four-Phase Pixel Shifting These models use a chip with a resolution of only 1920 x 1080p (0.47" DMD chip). For example, the popular BenQ TK800 belongs to such projectors.

But these projectors divide 4K signal into 4 pictures. Then processor shifts them relative to each other and sequentially displays, switching between them. Accordingly, the sum of four 2 MPix images reaches about 8.3 MPix. But the viewer perceives them as a single picture of 8.3 MPix due to high speed. But physically, the processor simultaneously displays only one quarter of the image.

Conclusion

Of course, all these technologies provide different image quality. But it becomes visually noticeable only when playing quite complex graphics and practically does not appear when playing traditional video.

But in general, the choice of the optimal projector traditionally depends on the budget and personal preferences of the consumer. This year, Amazon already offers the JVC DLA-NX9 4K Home Theater Projector with 8K / e-Shift for $ 18,000.00. This video demonstrates the world's first JVC DLA-NX9 projector with 8K e-Shift and other native 4K options. Read the full article

[eye-of-sara]

▶️my stakra will be screened in #Liege for #EUROVIDEO2018, curated by #Videographies, out of competition but in loop during the three days of the #festival, March 15-17 ⏸then my Chronoscope is back in #NYC, for the #show Persistence curated by #AXW, March 21, at CUNY #TriBeCa #Campus. Both soundtracks ⏺ by beloved @vvoonntteessllaa ⏹ #stillframes #stakra #wobulator #analog #synths

[dosbysilverqueen]

Anduin Music - Stormwind Harbor Music by Neal Acree (ft. @JulieElvenMusic)

(submitted by Wobulator via The Soundtrack thread, for Shikako)

[lissy-strata]

“wobulator”

Infotext: An electronic “wobulator” was used to produce the distorted grunts emitted by the mutating Slocum.

[maicherry]

Oh my darling Delia D. do the robots dream of thee? My pale mathematical saint. And in the days I cannot hide the architecture you derived does conspire to save me.

Oh my darling Delia D, writ in water robot elegies. Loops of sound eternal. Wobulate the dulcet tones crafting in your Delian mode strange and elegant sonic bones.

[aniss055]

Philips Screeneo U4 review: a compact ultra-short throw LED projector

Philips Screeneo U4 review: a compact ultra-short throw LED projector

The Philips Screeneo U4 (SCN350) projector features a 0.23-inch DMD chip from Texas Instruments (DLP230NP) with native Full HD definition of 1920 x 1080 pixels. This chip uses wobulation (extremely fast display of multiple 960 x 540 pixel qHD images staggered from each other) at 240 Hz to stream four qHD images side-by-side to produce a 2.1 million pixel Full HD 60 Hz image. real. This chip is…

[businessdaily05]

BenQ W1800i test: an Ultra HD Android TV projector finally well calibrated

BenQ W1800i test: an Ultra HD Android TV projector finally well calibrated

The BenQ W1800i video projector has a Texas Instruments 0.47 inch DMD (DLP470TE) DLP chip displaying a native Ultra HD definition of 3840 x 2160 pixels. As a reminder, this generation uses wobulation (extremely fast display of several Full HD images offset from each other) at 240 Hz to broadcast four Full HD images side by side, and thus produce an Ultra HD 60 Hz image of 8.3 million actual…

[notational]

off/on media signal from Justin Lincoln on Vimeo.

I made this while testing equipment, in particular a device known as the wobulator, at the Signal Culture Residency in Owego, New York during the Spring of 2017. The still image of a woman's face came up randomly from my tumblr feed and I'd have a difficult time finding who it is or where it came from exactly. However this person's image being called in and out of existence, being reversed, and obscured in an endless loop resonated with me in a way I couldn't shake. It was a fragment that was tucked away in a hard drive for some time after it's creation. I re-encountered this fragment while organizing that hard drive during the contentious confirmation sessions of Brett Kavanaugh in early October 2018. The Republican's response to Dr Ford's testimony, their will to "push on through", after what looked like a cursory and limited FBI investigation left a lasting impression on me about spin , politics, and human stories. The message seemed clear....we summon you to show just how easily we can ignore you. A mediated limbo, which I hope is a catalyst for drastic electoral change.

[omg-casualbeardstudent]

4 VL - Wobulate by Harry Dee http://bit.ly/2VbQgTV

[appliancesreviews]

Evolution of Epson 4K UHD projectors

As known, fierce competition in the consumer electronics segment stimulates companies to constantly increase the competitiveness of their models. Of course, it traditionally depends on the price, quality and functionality. As a result, all companies conduct a flexible pricing policy through distribution, warranty, price reduction, etc. But the resource of increasing competitiveness due to the quality of bundling and assembly is almost exhausted today. In fact, even the budget modern models from popular brands demonstrate a very high level in this aspect. Therefore, further improvement of this indicator requires significant costs, which, of course, reduce competitiveness due to price increases. As a result, the expansion of functionality has become the main instrument of competition. Of course, the rapid development of digital technology has radically expanded the possibilities of engineers. This trend is clearly evident in almost all segments of household appliances, including TVs, coffee machines, robot vacuum cleaners, etc. Of course, high-tech projectors are no exception. Leaders of this segment almost annually replenish their model lines with new projectors. But this, of course, a positive trend, has formed a small problem. Of course, the leaders of the segment are actively promoting their products around the world. Unfortunately, companies often use different names for one model for different markets. As a result, the market annually offers several dozen new models and a huge number of models of previous years from several companies under different names. As a consequence, a potential buyer is forced to choose between a huge number of models, many of which simply have a different name. Epson projectors well illustrate this problem. For example, today Amazon offers 5040UB/EH-TW9300, 5050UB/EH-TW9400 (USA/Europe), etc projectors. Therefore, even a simplified classification can simplify this task.

Epson UHD Pro Cinema 4030 and Home Cinema 5020UB/5030UB projectors

In the autumn of 2012, EPSON announced its next generation of Full HD 1080p 3D home theater projectors, including PowerLite Pro Cinema 6020UB, Home Cinema 5020UB/5020UBe (EH-TW9100W) and 3020/3020e. As known, the "UB" in the projector's name stands for Ultra Black. Today Epson Ultra Black technology uses a proprietary compensation filter to control the light polarization. It suppresses any stray light within the signal, producing in new models an unprecedented dynamic contrast ratio of 1,000,000:1 and more. Besides, UBe models, unlike UB models, have step-up package that integrates wireless HDMI technology based on the well-regarded WirelessHD standard. Of course, they are more expensive about $ 300. Otherwise, the models have identical specs. New line of Full HD 1080p projectors was presented оn the CEDIA Expo 2013. It included 6030UB, 4030 (EH-TW7200) and 5030UB/5030UBe (EH-TW9200). All these used an advanced Fujinon Opti Cinema lens with 2.1 zoom ratio, 480Hz Drive Technology for 3D mode, and a built-in cinema filter to improve color accuracy. In addition, all projectors supported a new Black and White Cinema mode (classic films), THX 2D and 3D Cinema modes, and a PiP (Picture-in-Picture) optionn for simultaneous use two content sources.

Epson 4K projectors

After few years, June 21, 2016, Epson introduced first 3LCD 5040UB/5040UBe (EH-TW9300) and Pro Cinema 4040 projectors with 4K UHD Signal Input and HDR for under $3,000. But already in 2017, the company offered Home Cinema 4000. It was cheaper ($2,200/$2,700), but had lower brightness (2200 vs 2500 ANSI lm) and contrast (140,000:1 vs 1,000,000:1). In fact, these models have different filters for color compensation. Moreover, 5040UB uses LCD panels with UB (Ultra Black) technology LCD imaging panels, which provide a radical increase of dinamic contrast. But overall, the 5040UB vs HC 4000 does not have a definite advantage due to the very attractive price-quality ratio of the HC 4000. The video at the end demonstrates the capabilities of this model. In the autumn of 2018, Epson introduced the Pro Cinema 4050 and 4010 (EH-TW7400), which became the first projectors of the new 4K PRO-UHD lineup with improved 4K-Enhancement. In fact, Epson Home Cinema 4010 can be positioned as a consumer version of Home Cinema 4050. Epson HC 4010 is slightly superior to HC 4000 and has a very attractive price, which provided a fairly successful competition for HC 4010 vs 5040UB. Finally, in the spring of 2019, the company introduced Epson 4K PRO-UHD 3-Chip HDR Home Cinema 5050UB/5050UBe ($2,700 / $3,000 ) projectors that come to replace 5040UB/5040UBe. Respectively, 5050UBe has a 4K wireless HDMI transmitter.

Evolution to 5040UB

As know, Epson Home Cinema 5020UB for several years was considered one of the most successful projectors in its class. Relatively low price, excellent specs, including Full HD, dinamic contrast ratio 320,000: 1 (full on / off), 2,400 ANSI lm, 30 - 300 inches Image Size, 22 dB in Eco mode, Full HD 3D, etc provided excellent competitiveness of this projector. Home Cinema 5030UB has become the next model in this line. By retaining the same chassis, engineers improved image quality by increasing the contrast from 320,000: 1 to 600,000: 1 and expanded the functionality. In particular, the model supports the Frame Interpolation option to smooth high-dynamic scenes. But the Epson 5040UB 2016 made a powerful leap in comparison with its prototypes. Its design fully coincides with Epson HC 4010. But in this model, the company first used 4K-Enhancement (pixel-shifting technology or wobulation) technology, increasing the resolution to 3840 x 2160. Of course, experts often argue about the validity of using the 4K name for this technology. Indeed, pixel-shifting does not increase the physical number of pixels. But these disputes are linguistic in nature, because wobulation really enhances the clarity of the image in its visual perception. Of course, 5040UB vs 5030UB showed many other improvements, including all-glass, 16-piece 2.1x zoom lens with 4K performance, motorized zoom, Lens Memory feature, etc.

Epson 5050UB

The latest Epson 5050UB vs 5040UB becam one more jerk. Epson Home Cinema 5050UB costs $ 700 more ($ 2,700 / $ 2,000) and provides 100 ANSI lm more (brightness of 2600/2500 lm for color and white). But, of course, the improved pixel shift technology is their main difference. Model uses the individual pixel plate with tighter tolerances. It increases the angle of the leading and trailing edges of the electronic shift pulse, redusing the delay between the trough and crest of the pixel shift changes. As a result, new projector has less downtime, providing more light output and a faster signal. In fact, 5050UB provides better accuracy, more output, and higher speed. According to the company, maximum supported resolutions of 5050UB reaches DCI 4K (4096 x 2160) vs 3840 x 2160 for 5040UB. Moreover, 5050UB provides Improved HDR Support. The projector automatically detects the HDR standard (SDR, HDR10 or HLG) and supports its adjustment from the menu. But, the final assessment of the price / quality ratio depends on the individual preferences of the buyer and his budget. Of course, projectors support a different set of technologies from EPSON, providing different functionality.

Conclusion

Of course, Epson was offered in this period a much wider range of projectors, including excellent Full HD Epson 3100, 3700 and 3900, etc. But the article format considers the line Home Cinema 5020UB/5020UBe - 5030UB/5030UBe - 5040UB/5040UBe – 5050UB/5050UBe and Epson Pro Cinema 4030 - 4000 - 4010. The parallel line of Pro Cinema 6020UB - 6030UB - 6040UB - 6050UB, differs only in the way of sale. They usually are available for sale within the custom integrator channel. But these models have identical specs with the 50xx series. It may be noted that some models have a different color. 4K PRO-UHD series use eponymous technology, which, according to the company, increased the efficiency of wobulation (4K Enhancement or pixel-shifting) and signal processing. As known, this technology divides the 4K signal into several lower-resolution pictures (Four-Phase and Two-Phase Pixel Shifting), shifts them relative to each other and displays them on the screen sequentially. As a result, the high frame rate creates an illusion of the perception of one high-resolution frame by summing up the pixels of each frame. Moreover, these models support Full HD for 3D Mode. Thus, today EPSON offers models, covering almost all price segments in this class. The simplified list includes: 1 - Full HD, including Home Cinema 5020UB / 5030UB and Pro Cinema 4030; 2 - 4K, including 5040UB (or 5040UBe, +$300) and HC 4000 ($1,850 / $1,465); 3 - 4K PRO-UHD (improved 4K-Enhancement), including 5050UB (or 5050UBe, +$300) and HC 4010 ($2,700 / $1,800). Of course, all these factors affect the choice of the optimal projector. Read the full article

[k2i]

stakra from Sara Bonaventura on Vimeo.

Soundtrack "Stakra" - from Sakamoto album Async (2017)

A choreography that was processed with analog synths and a wobulator, a modified monitor known as Paik Raster Manipulation Unit at Signal Culture (signalculture.org/). The performer is Annamaria Ajmone (annamariaajmone.com/)

It's a mystical and hallucinatory journey of a resilient subject, not yet completely seduced by the machines; entangled in their challenging system, but radiating dynamism while struggling for self determination. Getting lost, falling apart, splitting, vanishing and resetting. Finding balance in between. S/he - the stalker.

Entry for the Ryuichi Sakamoto | async - International short film competition.

[ihearthemcallingxx]

Red Handed...And Blue

Harry really wasn’t sure what he supposed to do. The fatherhood handbook hadn’t quite specified the procedure for these types of situations.

He’s only left her alone for two seconds. How-?

“Erm, yeah man I’m gonna- I’m gonna have to call ya back….yeah alright….bye.” Slowly he lowered his phone from his ear keeping his wide eyes locked on the equally as wide and slightly guilty eyes of his daughter. She sat on the rug in the middle of her spring themed room with an open red marker in her hands.

Literally, she had been caught red handed.

Any other time Harry would have taken the time to make a joke out of it, maybe even snap a few photos with that caption but, alongside that marker was the rest of the pack, and their ink had collectively found its way all over her body, her dolls, and the rug making for a big - and rather colorful - mess.

“Wha’s happened in ‘ere, love?” He says as he steps slowly into the room, eyes scanning around the room checking to make sure nothing else was ruined by – the what he hoped were washable – the markers.

Fearing the consequences, Y/D/N’s mind ran rapid, working quickly to come up with an excuse before she rushed, “It wasn’t me daddy I promise!”

Harry raised his eyebrows incredulously, “It wasn’t? I don’ see anyone else in ‘ere, honey.”

She shook her head, “It was- it was…it was, um…Olivia!” Harry turned his head to look at the little rag doll he was almost positive he’d stepped on coming in that lay haphazard on her floor, yarn hair spread around her cotton stuffed head. “She telled me too.”

“Did she?” Harry questions, pouting out his bottom lip and nodding, “She told you to draw with your markers without telling Daddy, yeah?”

“Mmhm,” she hummed, and though she felt confident that Harry actually believed her, her eyes were still big with regret, “She tolded me that I was a big girl and I didn’t need to ask anymore. And I told her no daddy, I said, 'No daddy tolded me no.’ But she didn’t listen. And then she tooked the markers and started coloring me and then I taked them back.”

Harry isn’t sure if he should laugh or be angry for her lying. (Once again Fathers for Dummies briefly mentioned this on page 67 but, it wasn’t enough for him to take away anything he could apply.)

“So, Olivia told ya to do this, eh?” He says, pointing his finger around the rug. Y/D/N nods, “And she was the one that colored all over your face.”

“Yes. And then she colored the rest of my dollies.”

Harry chuckles while shaking his head, taking one final step to scoop her up. He pries the markers from her hands and placed them on the carpet, not caring to cap them. “Alright then, let’s jus’ get ya cleaned up then.” He sighs.

He’s not necessarily happy - now he’s not only going to have to clean this up but he’s going to have to explain how this happened once you get home - but the situation is all too comical. And the fact that Y/D/N actually thinks that her story is plausible is one of the cutest things she’d ever done and he remembers clearly the time she asked him, “Since your eyes are green does that mean everything you see is green?” so that was a big thing to say.

He carries her to the bathroom attached to her room and places her on the sink. Her little feet dig into his stomach as he stands before her, wetting a rag under the running water before putting some soap onto it. “Told mummy to get those wobulous color or color wond- whatever those markers are called but no, she didn’ listen to me.”

He grips the back of her head to keep it steady while he scrubs the color from her skin. Her eyes and nose squeeze close as he wipes the soaked rag over them, the colors mixing and dying her skin a weird dark green before finally rinsing off.

It takes a few minutes to finally get Y/D/N looking like herself again and once he does, he grips the counter at either side of her dangling legs and bends down so he’s level with her face, looking into her eyes sternly.

“Listen baby, and I want ya to tell daddy the truth, alright? Did Olivia really make that mess?”

“Yes daddy I promise, and then she-”

“Y/D/N.”

Her big eyes brimmed with tears and her lip began to wobble, “I’m sorry daddy I did it. I sawed the markers and I wanted to play I didn’t mean to- to lie.”

Harry’s face softened as he listened to her explain truthfully what happened. It made his heart happy to hear her tell the truth as well as take responsibility for that she’s done wrong but the moment is bitter sweet. It reminded him that his little girl was growing up – as if the fact that she’d even been able to reach the markers that were on the top shelf of her bookcase wasn’t enough. In fact, part of him wanted her to keep telling him Olivia had done it.

His thumb swipes a giant tear that dripped from her eye down to her chubby cheek, “It’s alright, sweetheart. I forgive you. And thank you for telling the truth because what did daddy tell you about lying? Ya remember?”

“It’s better to get caught doing something bad than to lie about it.”

“Good girl.” He smiles, snuggling into her neck and pressing several kisses into it, inhaling that baby scent that was slowly beginning to fade away. She squealed, pushing him by his shoulders to defend herself from his attack.

“I’ll help ya clean up daddy.” She says when he places her on the marble floor, reaching to hold his hand.

He looks down to her and nods, “And I won’t tell mummy. Deal?”

“Deal.”

[junker-town]

Collin Sexton won summer league with this sumo wrestler-style psyche out

We all need more Collin Sexton in our lives.

Live every day of your life with the focus and intensity of Collin Sexton playing summer league defense.

Collin Sexton SUMO DEFENSE !!! pic.twitter.com/unt4n2I4ql

— Young Wobull (@World_Wide_Wob) July 17, 2018

Summer league doesn’t matter, they say. Tell that to Sexton. If he’s channeling this type of intensity in a summer league playoff game, just imagine how much fun he’s going to be when things count for real in the NBA.

Sexton is known for being a ruthless competitor. This is a player who only single-handedly won a college game playing three-on-five. Even before he arrived at Alabama, his facial expressions were going viral.

Who could forget this one?

this is the only reason you need collin sexton on your basketball team pic.twitter.com/z1SmWA8k5n

— Harry Lyles Jr. (@harrylylesjr) June 22, 2018

We all need more Collin Sexton in our lives. The Cavs’ new face of the franchise ... looks like this:

[self-surveillance]

Now into day 4 of my residency at Signal Culture, and it’s been a trip so far. During the first three days i received demos on different parts of the system, so it’s been all i can do to integrate something of the new parts i keep learning into what i’m doing. What i have been doing (or at least attempting) is to use the material i’ve brought along with me to create some new work, make material for future work, and along the way explore the processes i’m being exposed to (along with trying to find clues for what i want to do in the future and how i can do it, in my own studio).

[vidiashopnet]

Công Nghệ DLP Là Gì ?

Công Nghệ DLP Là Gì ?

1.Công nghệ DLP là gì ? Cách hoạt động như thế nào ?

Công nghệ DLP (Digital Light Processing) là một thiết bị hiển thị dựa trên công nghệ vi cơ điện tử quang học sử dụng thiết bị micromirror kỹ thuật số. Nó được phát triển vào năm 1987 bởi Larry Hornbeck của Texas Instruments. Trong khi thiết bị hình ảnh DLP được Texas Instruments phát minh, máy chiếu DLP đầu tiên được Digital Projection Ltd giới thiệu vào năm 1997. Digital Projection và Texas Instruments đã được trao giải Emmy Awards năm 1998 cho công nghệ máy chiếu DLP.

Hình ảnh minh hoạt công nghệ DLP

2.Thiết bị micromirror kỹ thuật số là gì ?

Trong các máy chiếu DLP, hình ảnh được tạo ra bởi các gương nhỏ hiển thị nhỏ trong ma trận trên một con chip bán dẫn, được gọi là Thiết bị Micromirror Kỹ thuật số (DMD). Những gương này quá nhỏ so với pixel pixel DMD có thể là 5,4 μm hoặc nhỏ hơn. Mỗi gương đại diện cho một hoặc nhiều điểm ảnh trong hình chiếu. Số lượng gương tương ứng với độ phân giải của hình ảnh dự kiến ​​(thường bằng một nửa số gương so với độ phân giải được quảng cáo do wobulation). 800×600, 1024×768, 1280×720 và 1920×1080 (HDTV) là một số kích thước DMD phổ biến.

3.Công nghệ DLP hoạt động như thế nào ?

Trong một máy chiếu với một chip DLP đơn lẻ, màu sắc được sản xuất bằng cách đặt một bánh xe màu giữa một đèn trắng và chip DLP hoặc bằng cách sử dụng các nguồn ánh sáng cá nhân để tạo ra các màu cơ bản, đèn LED hay lasers . Bánh xe màu được chia thành nhiều phần: các màu phụ gia chính: ĐỎ, XANH LÁ CÂY, XANH LAM và trong nhiều trường hợp màu trắng (rõ ràng). Các hệ thống mới hơn sẽ thay thế các màu trừ chủ đạo là màu xám, đỏ tươi, và màu vàng cho màu trắng. Việc sử dụng các màu trừ được là một phần của hệ thống hiệu suất màu mới hơn được gọi là Brilliant Color xử lý các màu cộng cùng với các màu trừ đi để tạo ra một sự kết hợp màu rộng hơn trên màn hình.

Cách hoạt động động của công nghệ DLP

Ưu điểm:

– Mượt (ở độ phân giải 1080p), hình ảnh không có biến dạng, sai lệch không đồng bộ.

– Hình học hoàn hảo và tính tuyến tính màu xám tuyệt vời.

– Độ tương phản ANSI tuyệt vời.

– Việc sử dụng nguồn sáng có thể thay thế có nghĩa là cuộc sống còn dài hơn màn hình CRT và màn hình plasma (điều này cũng có thể là một điều kiện được liệt kê dưới đây).

– Nguồn ánh sáng dễ dàng thay thế hơn so với đèn nền được sử dụng với màn hình LCD, và trên DLP thường là người dùng thay thế được.

– Ánh sáng từ hình ảnh dự kiến ​​không phải là phân cực vốn có .

– Hệ thống hiển thị LED và laser DLP mới ít nhiều loại bỏ sự cần thiết phải thay thế đèn.

– DLP cung cấp màn hình chiếu 3D giá cả phải chăng từ một đơn vị duy nhất và có thể được sử dụng với cả giải pháp 3D chủ động và thụ động.

– Trọng lượng nhẹ hơn LCD.

– Không giống như màn hình LCD và màn hình plasma, màn hình DLP không dựa vào chất lỏng như là phương tiện chiếu của chúng và do đó không bị giới hạn về kích thước bởi cơ chế gương cố hữu của chúng, làm cho chúng trở nên lý tưởng cho các rạp chiếu phim và màn hình nhà hát độ nét cao ngày càng mở rộng.

– Máy chiếu DLP có thể xử lý lên đến 7 màu riêng biệt, cho họ một gam màu rộng hơn.

Nhược Điểm:

– Một số người xem bị phiền bởi “hiệu ứng cầu vồng” trong các mô hình bánh xe màu. – Các máy chiếu DLP ở mặt sau không mỏng như màn hình LCD hoặc plasma phẳng (mặc dù có thể so sánh về trọng lượng), mặc dù một số mô hình vào năm 2008 trở nên có thể treo tường (trong khi vẫn dày từ 10″ đến 14″) Thay thế bóng đèn, bóng đèn trong các đơn vị dựa trên đèn. Tuổi thọ của đèn thủy ngân trung bình 2000 – 5000 giờ và chi phí thay thế cho khoảng từ $ 99 – 350 $, tùy thuộc vào thương hiệu và mô hình. Các đơn vị thế hệ mới sử dụng đèn LED hoặc lasers loại bỏ được vấn đề này một cách hiệu quả, mặc dù các chip LED thay thế có thể được yêu cầu trong suốt tuổi thọ kéo dài của tivi. – Một số người xem thấy rên rỉ cao của bánh xe màu là một điều khó chịu. Tuy nhiên, hệ thống ổ đĩa có thể được thiết kế để im lặng và một số máy chiếu không sản xuất bất kỳ tiếng ồn bánh xe màu âm thanh. – Dithering tiếng ồn có thể được noticeable, đặc biệt là trong các khu vực hình ảnh tối. Những con chip mới hơn (sau ~ 2004) có ít tiếng ồn hơn những con lớn. – Các hiện tượng khuếch tán lỗi gây ra bởi việc tính trung bình một bóng cho các điểm ảnh khác nhau, vì một điểm ảnh không thể hiển thị bóng mờ một cách chính xác. – Thời gian phản hồi trong các trò chơi điện tử có thể bị ảnh hưởng bởi độ trễ cập nhật. Mặc dù tất cả các HDTV đều có độ trễ khi mở rộng độ phân giải đầu ra thấp hơn sang độ phân giải gốc của chúng, các DLP thường được báo cáo là có sự chậm trễ hơn. Bàn giao tiếp mới hơn có tín hiệu đầu ra HD không có vấn đề này miễn là chúng được kết nối với cáp có khả năng HD. – Giảm góc nhìn so với công nghệ xem trực tiếp như CRT, plasma, và LCD. – Có thể sử dụng nhiều điện hơn và tạo ra nhiều nhiệt hơn các công nghệ cạnh tranh. – Một số người có thể quan sát thấy một hiện tượng trong đó các nội dung dự kiến ​​dường như đang đi xe đạp xuyên qua màu sắc của nó trong suốt thời gian trình bày. Điều này dễ nhìn thấy nhất bằng cách sử dụng chế độ ‘chế độ xem trực tuyến’ của camera trên nội dung dự kiến.

Nguồn: topav.com.vn

Bài viết Công Nghệ DLP Là Gì ? có nguồn tại Thiết Bị Karaoke, Xem Phim, Nghe Nhạc Số 1 Tại TPHCM.