180-line Television System

The „Olympic-Cannon“ television camera at the 1936 Summer Olympics in Berlin, developed by Emil Mechau at Telefunken and operated by Walter Bruch (inventor of the PAL-system.)

180 lines (by modern standards it could be called 169p) is an early electronic television system. It was used in Germany after on March 22, 1935, using telecine transmission of film, intermediate film system, or cameras using the Nipkow disk. Transmissions using cameras based on the iconoscope began on January 15, 1936.

The Berlin Summer Olympic Games were televised, using both fully electronic iconoscope-based cameras and intermediate film cameras, to Berlin and Hamburg in August 1936. Twenty-eight public television rooms were opened for anybody who did not own a television set. After February 1937 this system was replaced by a superior 441-line system.

System	Field frequency	Active picture	Field blanking	No. of broad pulses	Broad pulse width	Line frequency	Front porch	Line sync	Back porch	Active line time	Video/syncs ratio
180 lines	25 Hz	169 lines	11 lines	1 per field	200 µs	4500 Hz	2.2 µs	20.0 µs	2.2 µs	197.8 µs	75/25

External links

http://www.compulink.co.uk/~rrussell/tccgen/manual/tcgen0.html

Broadcast video formats

Television

Analog

525 lines	NTSC System M NTSC-J PAL-M System M

625 lines	PAL System B System D System G System H System I System K PAL-N PALplus SECAM System B System D System G System K System L

Audio	BTSC (MTS) EIAJ NICAM SAP Sound-in-Syncs Zweiton (A2/IGR)

Hidden signals	Captioning CGMS-A EPG GCR PDC Teletext VBI VEIL VIT VITC WSS XDS

Historical	Pre-1940 Mechanical television 180-line 405-line System A 441-line 819-line MAC MUSE

Digital

Interlaced	SDTV 480i 576i HDTV 1080i

Progressive	LDTV 1seg 240p 288p EDTV 480p 576p HDTV 720p 1080p UHDTV 2160p 4320p

MPEG-2 standards	ATSC DVB ISDB DTMB DVB 3D-TV

MPEG-4 AVC standards	ATSC A/72 DMB DTMB DVB SBTVD 1seg

Audio	AC-3 (5.1) DTS MPEG-1 Audio Layer II MPEG Multichannel PCM LPCM AAC HE-AAC

Hidden signals	AFD Broadcast flag Captioning CPCM EPG Teletext

Technical issues

14:9 compromise Broadcast-safe Digital cinema (DCI) Display motion blur Moving image formats MPEG transport stream Reverse Standards Conversion Standards conversion Television transmitter Video on demand Video processing Widescreen signaling Templates ()

Categories

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180-line Television System