update 223015b chapter 1: add images, artemis slide, fix hex table
- add cd logo, cd player, dvd, artemis images - add artemis ii slide with apollo comparison and bandwidth calculation - regenerate hex-dec lookup table as 16x16 grid with ascii highlight - move hex-dec table next to hexadezimal slides - fix mp3 bitrate: 320 -> 128 kbps to match stated file size
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@@ -135,6 +135,15 @@ Hochschule der Medien Stuttgart
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# Ein konkretes Beispiel
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# Ein konkretes Beispiel
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**Eine Minute Musik in CD-Qualität:**
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**Eine Minute Musik in CD-Qualität:**
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@@ -154,6 +163,8 @@ Aber es skaliert schnell.
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# Das Problem skaliert
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# Das Problem skaliert
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| Inhalt | Unkomprimiert |
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| Inhalt | Unkomprimiert |
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@@ -174,6 +185,8 @@ Das Problem musste gelöst werden.
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# Video eskaliert
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# Video eskaliert
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**Eine Minute 4K-Video (unkomprimiert):**
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**Eine Minute 4K-Video (unkomprimiert):**
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@@ -195,11 +208,33 @@ Die physikalische Realität erzwingt Kompression.
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# Artemis II orbitiert
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| | Apollo (1969) | Artemis II (2026) |
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|---|---|---|
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| Bandbreite | ~50 kbit/s | 260 Mbit/s |
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| Video | SW, ~320 Zeilen | HD live, 4K gespeichert |
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| Codec | analog | H.265 (HEVC) |
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260.000.000 Bit/s
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÷ 8 (Bit pro Byte) = 32,5 MB/s
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× 60 Sekunden = **1,95 GB pro Minute**
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*Apollo: 50 kbit/s = 0,375 MB/min*
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<!--
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Übertragung per Infrarot-Laser (O2O = Orion Artemis II Optical Communications). MAScOT-Terminal entwickelt von MIT Lincoln Lab. 32 Kameras an Bord (Nikon D5/Z9, GoPros, Redwire 4K-Festkameras). ZCube-Encoder kodiert H.265 an Bord. Bandbreite geteilt mit Telemetrie und Voice — daher live "nur" HD, echtes 4K kommt auf CompactFlash-Karten nach Splashdown. Latenz Mond ↔ Erde: ~1,3 Sekunden (384.400 km). Apollo nutzte S-Band Radio, Artemis II Infrarot-Laser.
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-->
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# Kompressionsraten in der Praxis
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# Kompressionsraten in der Praxis
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| Medium | Unkomprimiert | Komprimiert | Faktor |
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| Medium | Unkomprimiert | Komprimiert | Faktor |
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|--------|-------------:|------------:|-------:|
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|--------|-------------:|------------:|-------:|
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| 1 Song (4 Min) | ~42 MB | ~4 MB (MP3 320) | ~10× |
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| 1 Song (4 Min) | ~42 MB | ~4 MB (MP3 128) | ~10× |
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| 1 Foto (12 MP) | ~36 MB | ~3 MB (JPEG) | ~12× |
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| 1 Foto (12 MP) | ~36 MB | ~3 MB (JPEG) | ~12× |
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| 1 Min 4K-Video | ~45 GB | ~375 MB (H.264) | ~120× |
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| 1 Min 4K-Video | ~45 GB | ~375 MB (H.264) | ~120× |
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@@ -447,7 +482,7 @@ Frage: "Weiß jemand wieviele Zustände wir mit 8 Bit beschreiben können?"
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**1 Byte = 8 Bits**
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**1 Byte = 8 Bits**
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```
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```
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0 1 0 0 1 1 0 1
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0 0 1 0 1 0 1 0
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```
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```
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2⁸ = **256 Möglichkeiten** (0-255)
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2⁸ = **256 Möglichkeiten** (0-255)
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@@ -578,13 +613,6 @@ background-color: #FF0000; = Rot
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# Das Problem: Sprachen
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# Das Problem: Sprachen
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**Die Welt hat mehr als 256 Zeichen!**
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**Die Welt hat mehr als 256 Zeichen!**
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@@ -716,7 +744,12 @@ Hex-Editor = Standard-Tool für Dateianalyse und Reverse Engineering
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slides/223015b/assets/IMG_3617.jpg
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slides/223015b/assets/IMG_3617.jpg
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After Width: | Height: | Size: 148 KiB |
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slides/223015b/assets/artemis.jpg
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slides/223015b/assets/artemis.jpg
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After Width: | Height: | Size: 66 KiB |
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slides/223015b/assets/compact-disc-cd.jpg
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slides/223015b/assets/compact-disc-cd.jpg
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After Width: | Height: | Size: 32 KiB |
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slides/223015b/assets/dvd.jpg
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slides/223015b/assets/dvd.jpg
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After Width: | Height: | Size: 318 KiB |
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Before Width: | Height: | Size: 2.0 MiB After Width: | Height: | Size: 84 KiB |
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