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So funktioniert das SONY LANC™-Protokoll |
How SONY's LANC™ protocol works |
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| Die LANC™ Schnittstelle ist eine bidirektionale serielle
open-collector Schnittstelle, auf der zwei Geräte miteinander kommunizieren können.
Der Camcorder oder der Fotoapparat (hier heisst die Buchse ACC)
erhält darüber Steuerbefehle und gibt seinen Status zurück.
Beim Camcorder kann man noch mehr Daten auslesen: Time Code, Data Code, Zählwerk,
Restlaufzeit, Warnsignale und Laufwerksrückmeldungen. LANC steht für Logic Application Control Bus System (aus einer Sony Information im April 1991 zur Einführung des "8mm Standard Time Code"). Der Master (also der Camcorder oder der Fotoapparat) gibt den Rahmen des Telegramms vor, indem er 8 Startbits generiert, denen jeweils 8 Bits (1 Byte) folgen. Anschliessend folgt ein (langes) Stopbit und das Spiel beginnt von vorn. Ein Bit hat die Länge von 104µs. Der Abstand zwischen zwei Startbits kann je nach Gerät zwischen 1200µs und 1400µs schwanken. Der Abstand zweier Telegramme beträgt 20ms für PAL/625 und 16,6ms für NTSC/525. Das Timing entspricht RS232 bei 9600 Baud. Natürlich ist über die Schnittstelle auch der Service Mode einstellbar, ich gehe aber nicht darauf ein. Im Internet findet man dafür fertige Geräte zum Kauf. Auch manche Camcorder der Firma Canon haben eine LANC-Buchse, allerdings reagieren diese Geräte nur auf wenige Befehle. |
LANC™ is a bidirektional serial open
collector communication port, where two devices can communicate with each other.
The camcorder or still video camera (plug is called ACC here) is able to
receive commands and sends back its status. The camcorder provides even more data: time code, data code, counter, remain time, alerts and drive feedback. LANC ist short for Logic Application Control Bus System (from a Sony information to the introduction of the "8mm Standard Time Code" in april 1991). The master (camcorder or still video camera) generates the telegram frame, creating 8 startbits, followed each by 8 bits (1 byte) and a (long) stopbit. Then everything starts again. One bit has a duration of 104µs. The distance between two startbits can vary between 1200µs and 1400µs depending on the device. The distance between two telegrams is 20ms for PAL/625 and 16.6ms for NTSC/525. The timing conforms to RS232 at 9600 Baud. Of course also the service mode is accessable, but I won't enter into this. In the internet you will find ready-to-use devices to buy. Some Canon camcorders also have a LANC-Plug, but only few commands are implemented. |
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| LANC protocol - timing diagram |
Site navigation: [Byte 0] [Byte 1] [Byte 2/3] [Byte 4] [Byte 5] [Byte 6/7] [Links] |
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Voltage depends on model and battery. CTL signal only on some devices (VCR control signal). Connect LANC Signal to GND for >140 ms to power on (or on Mini-DIN Pin 3 to GND). Cable length can easily exceed 10 m. |
| 2.5 mm stereo "Klinke" / 2.5 mm stereo jack |
Mini-DIN | A/V jack | |
| Sicht auf Gerätebuchse / device jack view | |||
Connections:| Ein Befehl ist erst nach 3...4 Telegrammen gültig. Ausser LANC (CTRL-L) gibt es bei SONY die CTRL-S Schnittstelle und natürlich die Möglichkeit der IR Bedienung. Die Command-Codes sind überall die gleichen, bei CTRL-S und IR benötigt man noch einen Geräte-Code. Ausserdem sind die Codes verglichen mit LANC um ein Bit nach rechts verschoben. SIRCS entspricht im Timing dem CTRL-S, aber SIRCS wird mit 40 kHz gepulst. |
A command is valid after 3...4 telegrams. Except LANC (CTRL-L) there is also a CTRL-S plug at some SONY devices and of course the infrared control. The command codes are the same, but for CTRL-S and IR you need an additional device code and they are shifted right one bit, compared to LANC. SIRCS and CTRL-S have the same timing, but SIRCS is pulsed with 40 kHz. |
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| Binary code | Description |
|---|---|
| 0001 1000 | Normal command to VTR or video camera |
| 0010 1000 | Special command to video camera |
| 0011 1000 | Special command to VTR |
| 0001 1110 | Normal command to still video camera |
"Low-Nibble": Device Code
"High-Nibble": Guide Code
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| Sub-Command in Byte 0: | 0001 1000 (bin) |
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The following table shows the actual Command-Codes to the device (Normal command to VTR or video camera).
Only valid with the corresponding Sub-Command in Byte 0.
| command (hex) | action |
|---|---|
| 00 | program 1 |
| 02 | program 2 |
| 04 | program 3 |
| 05 | mode (HDV) |
| 06 | program 4 |
| 08 | program 5 |
| 0A | program 6 |
| 0C | program 7 |
| 0E | program 8 |
| 10 | program 9 |
| 12 | program 0 (10: SL-HF950 MKII) |
| 14 | program 11 (SL-HF950 MKII) |
| 16 | enter, program 12 (SL-HF950 MKII) |
| 18 | program 13 |
| 1A | program 14 |
| 1C | program 15 |
| 1E | program 16 |
| 20 | program + |
| 22 | program - |
| 24 | |
| 26 | |
| 28 | x2 |
| 2A | power (or viewfinder) off |
| 2B | photo write |
| 2C | eject |
| 2E | main/sub |
| 30 | stop |
| 32 | pause |
| 33 | start/stop |
| 34 | play |
| 35 | tele (only CCD-V90) |
| 36 | rew |
| 37 | wide (only CCD-V90) |
| 38 | fwd |
| 39 | photo capture |
| 3A | rec |
| 3C | rec-pause (some devices) |
| 3E | |
| 40 | still |
| 42 | |
| 44 | x1/10 |
| 46 | x1/5 (sometimes: vis. scan) |
| 48 | |
| 4A | x14 |
| 4C | x9 |
| 4E | tracking auto/manual |
| 50 | search - |
| 52 | search + |
| 54 | TV/VTR |
| 56 | |
| 58 | |
| 5A | VTR |
| 5B | date search / photo search / photo scan |
| 5C | |
| 5E | power off |
| 60 | rev frame |
| 62 | fwd frame |
| 64 | |
| 65 | edit-search - |
| 66 | x1 |
| 67 | edit-search + |
| 68 | |
| 69 | rec-review (not i.e. TR-2200) |
| 6A | |
| 6C | sleep |
| 6E | tracking normal |
| 70 | |
| 72 | |
| 74 | rew+play |
| 76 | |
| 78 | AUX |
| 7A | slow + |
| 7B | tape end search (HDV) |
| 7C | slow - |
| 7E | |
| 80 | |
| 82 | display mode |
| 84 | menu up |
| 86 | menu down |
| 88 | tracking/fine + |
| 8A | tracking/fine - |
| 8C | counter reset |
| 8E | zero mem |
| 90 | index mark |
| 92 | index erase |
| 94 | shuttle edit + |
| 96 | shuttle edit - |
| 98 | data code or goto |
| 99 | data code or recording parameters |
| 9A | menu |
| 9C | |
| 9E | input select |
| A0 | |
| A2 | execute |
| A4 | quick timer |
| A6 | index |
| A8 | |
| AA | |
| AC | index search +, date search 01 (HDV) |
| AE | index search -, date search -01 (HDV) |
| B0 | tape speed |
| B2 | goto zero / tape return (not DV) |
| B4 | counter display, data screen |
| B6 | open/close (SL-HF950), replay (FauHaEss) |
| B8 | timer display |
| BA | |
| BC | |
| BD | date display off |
| BE | |
| BF | date display on |
| C0 | timer set |
| C2 | menu right, next |
| C4 | menu left |
| C6 | timer clear |
| C8 | timer check |
| CA | timer record |
| CC | |
| CE | |
| D0 | audio dub |
| D2 | |
| D4 | edit assemble |
| D6 | edit mark |
| D8 | synchro edit |
| DA | |
| DC | digital off (VCR), print (DV) |
| DE | speed + |
| E0 | speed - |
| E2 | stop motion |
| E4 | |
| E6 | |
| E8 | channel scan / flash motion |
| EA | |
| EC | voice boost |
| EE | |
| F0 | |
| F2 | |
| F4 | |
| F6 | |
| F8 | digital scan |
| FA | high-speed-rew |
| FC | still/shuttle (EV-S880) |
| FE |
The following table shows the actual Command-Codes to the device (Special command to video camera).
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The following table shows the actual Command-Codes to the device (Normal command to still video camera).
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| Guide Code |
Description | Byte 3, L-N | Byte 3, H-N |
| 9 | channel / tuner | AV or OFF: 1010 channel: One's No Tuner: 0000 and H-N 0000 |
AV or OFF: 1010 channel: Ten's (at 0: 0000 or 1010) No Tuner: 0000 and L-N 0000 |
| A | channel / tuner | AV or OFF: 1010 channel: Hundred's No Tuner: 0000 |
Tuner-Type 1: 00 Tuner-Type 2: 01 Tuner-Type 3: 10 |
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| L-N H-N |
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| 0 | initial | is eject | stop | fwd | rec | play | play/pause fwd | AL insert | |
| 1 | dew cass. out | load | rec/ pause | frame fwd | AL ins-pause | ||||
| 2 | ejecting | cassette busy | timer-rec | x1 fwd | 1/5 fwd | AR insert | |||
| 3 | unload | low-battery | go zero/play f. | timer-rec s. | x1 rev | 1/5 rev | AR ins-pause | ||
| 4 | dew stop | fwd mem stop | AV insert | cue | 1/10 fwd | AL+V insert | |||
| 5 | emergency | AV ins.-pause | rev | 1/10 rev | AL+V ins-ps | ||||
| 6 | tape end | video insert | x2/x3 fwd | frame fwd | AR+V insert | ||||
| 7 | tape top | video ins.-ps | x2/x3 rev | frame rev | AL+R ins-ps | ||||
| 8 | rew | audio dub | edit search+ | x9 fwd | |||||
| 9 | stp after zero | a.dub pause | edit search- | x9 rev | play/pause rev | ||||
| A | load emer. | auto-play | cam rec | edit-s fwd | frame sea. cue | ||||
| B | unload emerg. | stop emerg. 1 | go zero/play r. | cam stby | edit-s rev | frame sea. rev | |||
| C | stop emerg. 2 | rew mem stop | x14 fwd | ||||||
| D | hi-speed rew | x14 rev | |||||||
| E | stop NC | ||||||||
| F | edit pause |
Status-Code from the connected device (still video camera).
| L-N H-N |
0 | D | E |
| 0 | initial | ||
| D | mpeg movie mode | ||
| E | photo mode | ||
| F | play mode | setup mode |
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| Bit | Description |
|---|---|
| 0 | 1 = invalid transmitted code |
| 1 | 1 = rec protection (old models: tape pre-end) |
| 2 | 1 = battery low |
| 3 | 1 = zero mem / zero found |
| 4...7 | Guide Code for Byte 6 and 7 |
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| Guide Code |
Description | Byte 6, L-N | Byte 6, H-N | Byte 7, L-N | Byte 7, H-N |
| 0 | |||||
| 1 | Status V8 and Hi8 | 0+1: tape speed 00=SP, 01=LP 2: standard FM-sound 3: PCM-sound |
0: camera-mode 1: rec protection / tape pre-end 2: ME (0=MP) 3: 13µm (0=10µm) |
0: 1: camera-mode 2: 3: servo / mechanics on |
0+2: input select (00=tuner, 01=sim, 11=line) |
| 2 | decimal Counter | One's | Ten's | Hundred's | Thousand's |
| 3 | real time Counter, picture Counter |
Seconds One's, Picture One's |
Seconds Ten's, Picture Ten's |
Minutes One's, Picture Hundred's |
Minutes Ten's, Picture Thousand's |
| 4 | real time Counter | Hours One's | Hours Ten's | Frames One's or Day One's (or 0000/1111) ("Day" only seen in CCD-V90E!) |
0+1: Frames Ten's or Day Ten's 2: RCTC 3: sign (1=negativ) (or 0000/1111) |
| 5 | remain time | Minutes One's | Minutes Ten's | Hours One's | 2: 0=calculating (old devices: 1111) |
| 6 | |||||
| 7 | Status Betamax or DV | Betamax: 0+1: tape speed 00=BI, 01=BII, 10=BIII 2: Beta Hifi 3: servo/ mechanics on DV: 0+1: tape-speed 00=SP, 01=LP 2: audio (0=12bit, 1=16bit) 3: servo / mechanics on |
0: 0=Betamax, 1=DV 1: rec protection 2+3: Byte 7 DV mode: 00=DV input 01=ext. Status DV in a Camera 10= 11=ext. Status DV in a VTR |
Betamax: 0+1: Audio L+R insert 2: Video insert 3: assemble DV mode 00: input tuner: 0000, input Line: 0101, input DV: 1010 DV mode 01: mode: 0000=player, 0011=camera |
Betamax: 0: edit 1: preview 2: EE 3: DV mode 00: Line 1: 0000 Line 3: 1010 Line 2: 0101 Line 4: 1111 |
| 8 | Data Guide | DC: 4 | DC: 1 | DC: 3=Date, 4=Time | DC: 0 |
| 9 | Data-Code (Tape + Picture) |
Date: Year One's Time: Hour One's |
Date: Year Ten's Time: Hour Ten's |
Date: Month One's Time: Minutes One's |
Date: Month Ten's Time: Minutes Ten's |
| A | Data-Code (Tape + Picture) |
Date: Day One's Time: Seconds One's |
Date: Day Ten's Time: Seconds Ten's |
DC: 1111 sometimes 1000 |
DC: 1111 sometimes 1001/1011 |
| B | |||||
| C | Status Hi8, DV (+GC1) |
Hi8: 0100 DV: 0010 or 0001 |
Hi8: 0100 DV: 0010 or 0000 |
0: camera mode / CTL found 1: 2: edit on 3: auto Hi8 |
0000 |
| D | |||||
| E | Status Photo | 0: 1=photo mode selected 1: 1=memorystick™ inserted 2: 1=memorystick™ write-protected |
0: 1=memorystick™ play 1: 1=memorystick™ search 2: 1=memorystick™ full 3: 1=camera with memorystick™ |
0: 1=photo mode available | |
| F |
Wer mit dem Lötkolben umgehen kann, kann sich für ca. 20 Euro eine Videoschnittlösung mit integrierter lernfähiger Infrarotfernbedienung bauen. Das Ding heisst IRdeo und ist hier sehr ausführlich beschrieben. Mit IRdeo ist es auch möglich, eigene Programme zu entwerfen, die LANC (CTRL-L) empfangen und Befehle an Sony Equipment aussenden. |
If you are familiar with a soldering iron you can construct your own video editing solution with integrated learning remote control for only EUR 20. It is called IRdeo and is described here very comprehensive. With IRdeo it is possible to design your own software for Sony devices to receive and send LANC (CTRL-L) commands. |
