BildTel 001 » History » Version 17
laforge, 10/30/2023 08:47 PM
1 | 9 | laforge | {{>toc}} |
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3 | 1 | laforge | h1. BildTel 001 |
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5 | 3 | laforge | The Telekom-branded *BildTel 001* was likely the first commercially available ISDN video phone in Germany. |
6 | 1 | laforge | |
7 | 3 | laforge | {{thumbnail(20231028_114259.jpg,size=400)}} |
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9 | 1 | laforge | |
10 | 9 | laforge | {{thumbnail(isdn-bildtelefon-picture-alliance-zb-matthias-hiekel-11764519.jpg,size=400)}} |
11 | (Only digital marketing picture I could find online, courtesy of Picture Allianze / Matthias Hiekel) |
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13 | 1 | laforge | h2. Architecture |
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15 | The system consists of the following parts: |
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16 | 2 | laforge | * A TV screen with built-in [[BTX__Prestel__Videotex__Minitel|BTX]] decoder (inherited from [[LOEWE_Multitel_TV10]]) |
17 | 1 | laforge | * A keyboard + phone-receiver combo (inherited from [[LOEWE_Multitel_TV10]]) |
18 | * A _desktop-computer-like_ box called the Codec (containing the actual ISDN video telephony part, implemented by AEG/OLYMPIA) |
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19 | * A video camera |
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20 | |||
21 | The BTX Terminal [[LOEWE_Multitel_TV10]] was used as the "user interface" for the device, adding the _codec_ box to turn it into a video phone. |
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23 | 10 | laforge | h3. Codec unit |
24 | 4 | laforge | |
25 | {{thumbnail(20231028_114437.jpg,size=400)}} |
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26 | 6 | laforge | {{thumbnail(20231028_120250.jpg,size=400)}} |
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29 | 8 | laforge | {{thumbnail(20231028_120934.jpg,size=400)}} |
30 | {{thumbnail(20231028_120943.jpg)}} |
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31 | 4 | laforge | |
32 | 13 | laforge | The Codec unit ("Bildeinheit") consists of a variety of different circuit boards: |
33 | * 1x power supply |
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34 | * 4x "mainboards" stacked on top of each other (two sandwiches of two PCBA) |
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35 | ** boards have a number of DIN 41612 slots for plug-in cards |
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36 | * 9x CODEC ADSP boards plugged into slots of the top two mainboards |
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37 | * 1x OUTDIG sandwich, consisting of two PCBA plugged into slots of the top mainboard |
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38 | ** this is the TV output board, generating and digital-analog-converting analog TV signal |
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39 | * 1x FIXME sandwich, consisting of two PCBA plugged into slots of a mainboard |
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40 | ** this is the camera input board, receiving and digitizing the analog TV camera signal |
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41 | |||
42 | h4. AEG-OLYMPIA CODEC ADSP |
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43 | |||
44 | This board exists 9 times in total. There are no visible differences between the boards; also the label on the GAL is identical. |
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45 | |||
46 | PCB Marking: @1601914L11T@ |
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47 | Connector Marking: None |
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48 | |||
49 | {{thumbnail(20231030_105751.jpg,size=400)}} |
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50 | {{thumbnail(20231030_105725.jpg,size=400)}} |
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51 | {{thumbnail(20231030_105648.jpg,size=400)}} |
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54 | |ADI ADSP-2101|Digital Signal Processor| |
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55 | |VX-8111 10.0000 MHz|Crystal Oscillator| |
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56 | |GAL20V8A (4012-001/2)|GAL| |
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57 | |2x IDT 7201SA25J|FIFO| |
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58 | |2x IDT 7202SA25J|FIFO| |
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59 | |3xCY7C199-45VC|RAM| |
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60 | |||
61 | * GAL image: attachment:bildtel001-aeg_olympia_codec_adsp_4012-001_2_GAL20V8A.jed |
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62 | |||
63 | h4. AEG-OLYMPIA OUTDIG |
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64 | |||
65 | PCB Marking: @2401913L1T@ |
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66 | Connector Marking: @35.103-3030.2 SN. 3051@ |
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67 | |||
68 | top PCBA: |
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69 | |||
70 | 14 | laforge | {{thumbnail(20231030_110051.jpg,size=400)}} |
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73 | 13 | laforge | |Brooktree Bt101|Triple 8-bit VIDEODAC| |
74 | |Xilinx XC2018-100|FPGA 100 CLBs, 1000 Gates| |
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75 | |S-Data SXO-300C 27.00000 MHz|Crystal Oscillator| |
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76 | |3x IDT 7201SA25J|FIFO| |
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80 | bottom PCBA: FIXME |
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81 | |||
82 | 15 | laforge | h4. AEG-OLYMPIA INANA |
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84 | This is the analog input board. |
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85 | |||
86 | 16 | laforge | PCB Marking: @0202914L1T@ |
87 | Connector Marking: @35.103-3023.8/01@ |
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89 | 15 | laforge | h4. AEG-OLYMPIA INDIG |
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91 | This is the digital input board, containing the video ADC and support circuitry |
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92 | |||
93 | PCB Marking: @0202915L1T@ |
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94 | Connector Marking: @35.103-3020.2/01@ |
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95 | 1 | laforge | |
96 | 17 | laforge | {{thumbnail(20231030_214057.jpg,size=400)}} |
97 | {{thumbnail(20231030_214157.jpg,size=400)}} |
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99 | 15 | laforge | |Brooktree Bt253KPJ|Color Video ADC| |
100 | |Xilinx XC3030-70|FPGA| |
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101 | |DOC31CC 27.000M|Crystal Oscillator| |
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102 | |3x TI TLC272CP|OpAmp; likely buffers for analog R/G/B| |
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103 | |0900-002/2|SPI flash for FPGA bitstream?| |
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104 | |3x QSL QS8201-15JR|512x9 FIFO| |
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105 | |||
106 | 10 | laforge | h3. TV Camera |
107 | 4 | laforge | |
108 | {{thumbnail(20231028_115010.jpg,size=400)}} |
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110 | 11 | laforge | h3. TV / BTX Unit |
111 | 4 | laforge | |
112 | {{thumbnail(20231028_114503.jpg,size=400)}} |
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113 | 7 | laforge | {{thumbnail(20231028_132851.jpg,size=400)}} |
114 | {{thumbnail(20231028_133058.jpg,size=400)}} |
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115 | {{thumbnail(20231028_133103.jpg,size=400)}} |
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116 | {{thumbnail(20231028_133211.jpg,size=400)}} |
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117 | {{thumbnail(20231028_133255.jpg,size=400)}} |
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118 | 1 | laforge | {{thumbnail(20231028_133336.jpg,size=400)}} |
119 | 11 | laforge | |
120 | h4. BTX decoder |
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121 | |||
122 | * EPROM image: attachment:bildtel001_tv10_btxdecoder_16772_074_349_27C010.bin |
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123 | 4 | laforge | |
124 | 10 | laforge | h3. Keyboard/receiver unit |
125 | 4 | laforge | |
126 | {{thumbnail(20231028_114558.jpg,size=400)}} |
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127 | {{thumbnail(20231028_114639.jpg,size=400)}} |
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129 | {{thumbnail(20231028_141412.jpg)}} |
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130 | {{thumbnail(20231028_142128.jpg)}} |
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131 | 5 | laforge | {{thumbnail(20231028_142246.jpg)}} |
132 | {{thumbnail(20231028_142251.jpg)}} |
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133 | 4 | laforge | |
134 | 9 | laforge | Actual Cherry keyboard PCBA after full disassembly, ultrasonic cleaning of all keycaps and lots of isopropanol on the PCB, removing what might be decades old coke residue: |
135 | {{thumbnail(20231029_093033.jpg,size=400)}} |
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137 | 12 | laforge | * EPROM image: attachment:bildtel001_keyboard_74E84.251U22g_1.0.0_010389_M2764A.bin |
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139 | 10 | laforge | h2. Connections |
140 | 1 | laforge | |
141 | 10 | laforge | h3. Codec unit |
142 | 1 | laforge | |
143 | * connects to ISDN basic-rate S0 interface using 8P8C/RJ45 plug |
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144 | * has two proprietary connectors for attaching video cameras |
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145 | * has two SCART connectors (one for audio/video output to the TV) |
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146 | * has a TAE jack for attaching an analog phone for the audio port (connected to the combined keyboard/receiver unit by default) |
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147 | * has another TAE jack (purpose unknown) |
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148 | * has a V.24 interface on a SUB-D 9 connector which connects to the built-in BTX decoder of the TV unit |
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149 | |||
150 | 10 | laforge | h3. TV Camera |
151 | 1 | laforge | |
152 | * connects to the Codec unit using a proprietary high-density connector that appears to carry both video and power |
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153 | |||
154 | 10 | laforge | h3. TV unit |
155 | 1 | laforge | |
156 | * has an RF input for TV broadcast signals (PAL) |
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157 | * has a SCART input for baseband audio/video from peripherals (like the Codec unit) |
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158 | * has a DIN speaker output for attaching an external speaker |
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159 | * has a built-in BTX decoder with |
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160 | ** an unused DIN port intended to connect to the [[DBT-03]] BTX-Modem (not used in the ISDN video application) |
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161 | ** an unused centronics port |
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162 | ** an auxiliary V.24 port on a DIN connector interfacing the SUB-D 9 of the Codec unit |
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163 | |||
164 | 10 | laforge | h3. Keyboard/receiver unit |
165 | 1 | laforge | |
166 | * has a cable with TAE connector attached (connects to codec unit) |
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167 | 9 | laforge | |
168 | h2. Further Reading |
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169 | |||
170 | * "Thread on the fediverse covering the BildTel 001":https://chaos.social/@LaF0rge/111317641831468838 |