03-02-2019, 04:11 PM | #23 | |
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03-08-2019, 10:21 AM | #24 | |
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You are confusing two different types of LED/LCD displays. There is a common format which has a FIXED segmented display where individual pixels are either being illuminated or not. This is a very old (and cheap) technology. It is NOT flexible and it is also NOT what BMW is using in their HUDs. This type of display ONLY shows one single array of data as the pixels are either illuminated or not (and the colors are fixed). You can clearly see that BMW's use a more flexible modern display when they switch from "Normal" to "M" mode (for instance) and the contents of the display are COMPLETELY different. You can even select which data is displayed via the HUD via iDrive on many models. This is not simply turning pixels on or off, it is completely rewriting the contents of this display, on demand. (I've even coded (enabled) the radio stations display in the HUD of my M6). The ability to display graphic mapping info in the HUD also confirms this. There is no reason to use the very old fixed pixel technology when a simple modern backlit LED graphics panel provides much more flexibility. The complete change of data and available layout in many BMW's clearly demonstrates that these panels are NOT using a fixed pixel segment display. Its actually MORE complicated and restrictive to use fixed segment displays when a simple backlit RGB panel can perform the same function with much more flexibility. BMW can write one generic display function API and use one common RGB HUD panel design to meet the basic need of all their vehicles. If BMW were to use a fixed segment pixel display, then each car could need a different HUD and programming (Different RPM ranges etc). Its simply NOT the way modern programming and manufacturing is done...
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03-17-2019, 09:38 AM | #25 | |
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So, if you eant more info on your HUD, that possibility must already be built into the system. |
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03-18-2019, 10:17 AM | #26 | |
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The HUD's are nothing more than Backlit LED panels being drawn by graphics chips. Exactly like a computer monitor. Nothing more complicated than that. Completely flexible yet still entirely code (firmware) dependent. The image is only fixed wrt what ever the CODE has been designed to display (not the HARDWARE).
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03-27-2019, 03:22 AM | #27 | ||
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03-27-2019, 10:23 AM | #28 |
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Its actually MORE expensive to implement a design which uses limited functionality hardware anymore. It used to be that functionality was minimized to save cost (fixed segment displays), but now that is no longer the case. Its actually pretty hard to find that technology any more. As the hardware becomes more capable/cheaper/available, the functional implementation gets moved into software...
Remember the IBM Selectric Typewriter? You used to change the fonts by changing the ball (hardware). Once dot matrix printing became available (and then inkjet, laser, ...), you no longer had to change the hardware to change the display (font). It is all done in software now...
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03-27-2019, 07:23 PM | #29 | |
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03-28-2019, 09:54 AM | #30 | |
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I expect the only difference is merely whatever has been facilitated via different versions of the HUD software/firmware.
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03-28-2019, 10:23 AM | #31 | |
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Here's the HUD for the MY 14-17. I can't find the 18+ part number. Part #62-30-9-395-583 https://parts.germainbmw.com/oem-par...ay-62309395583 The part number for my M3 CS is also different, but that might be because of the casing.
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03-28-2019, 11:29 AM | #32 | |
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My bet is that the HUD Hardware itself has NOTHING to do with what is displayed on it. It is my bet that the vehicle's FIRMWARE determines what is displayed. (Unless they are just pre-loading newer firmware on the same hardware and changing the P/N)
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