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The Philips PM5540 was an early electronically-generated,
PM5540 Black/White Pattern Generator
PM5540 Manual
Philips TV Measuring Equipment, 1980
Test cards Broadcast engineering {{Tv-tech-stub
The Philips PM5540 was an early electronically-generated, monochrome
A monochrome or monochromatic image, object or palette is composed of one color (or values of one color). Images using only shades of grey are called grayscale (typically digital) or black-and-white (typically analog). In physics, monochrom ...
test card
A test card, also known as a test pattern or start-up/closedown test, is a television test signal, typically broadcast at times when the transmitter is active but no program is being broadcast (often at sign-on and sign-off).
Used since the ear ...
that is considered to be a black-and-white predecessor of the widely used Philips PM5544
The Philips PM5544 is a television pattern generator, most commonly used to provide a television station with a complex test card commonly referred to as a Philips Pattern or PTV Circle pattern. The content and layout of the pattern was designed b ...
test pattern. The content and layout of the pattern, as well as the generator
Generator may refer to:
* Signal generator, electronic devices that generate repeating or non-repeating electronic signals
* Electric generator, a device that converts mechanical energy to electrical energy.
* Generator (circuit theory), an eleme ...
, was designed and made by Danish
Danish may refer to:
* Something of, from, or related to the country of Denmark
People
* A national or citizen of Denmark, also called a "Dane," see Demographics of Denmark
* Culture of Denmark
* Danish people or Danes, people with a Danish a ...
engineer Finn Hendil ( da; 1939–2011) at the Philips
Koninklijke Philips N.V. (), commonly shortened to Philips, is a Dutch multinational conglomerate corporation that was founded in Eindhoven in 1891. Since 1997, it has been mostly headquartered in Amsterdam, though the Benelux headquarters i ...
TV & Test Equipment laboratory in Brøndby Municipality
Brøndby Kommune (), a municipality ( da, kommune) in the former Copenhagen County (now Region Hovedstaden), is on the east coast of the island of Zealand (''Sjælland'') in eastern Denmark. The municipality covers an area of , and has a total p ...
near Copenhagen
Copenhagen ( or .; da, København ) is the capital and most populous city of Denmark, with a proper population of around 815.000 in the last quarter of 2022; and some 1.370,000 in the urban area; and the wider Copenhagen metropolitan ar ...
in 1965–1966.
It has been used in Australia
Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...
, Spain
, image_flag = Bandera de España.svg
, image_coat = Escudo de España (mazonado).svg
, national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond")
, national_anthem = (English: "Royal March")
, i ...
, Abu Dhabi
Abu Dhabi (, ; ar, أَبُو ظَبْيٍ ' ) is the capital and second-most populous city (after Dubai) of the United Arab Emirates. It is also the capital of the Emirate of Abu Dhabi and the centre of the Abu Dhabi Metropolitan Area.
...
, Denmark
)
, song = ( en, "King Christian stood by the lofty mast")
, song_type = National and royal anthem
, image_map = EU-Denmark.svg
, map_caption =
, subdivision_type = Sovereign state
, subdivision_name = Danish Realm, Kingdom of Denmark
...
, Israel
Israel (; he, יִשְׂרָאֵל, ; ar, إِسْرَائِيل, ), officially the State of Israel ( he, מְדִינַת יִשְׂרָאֵל, label=none, translit=Medīnat Yīsrāʾēl; ), is a country in Western Asia. It is situated ...
, Qatar
Qatar (, ; ar, قطر, Qaṭar ; local vernacular pronunciation: ), officially the State of Qatar,) is a country in Western Asia. It occupies the Qatar Peninsula on the northeastern coast of the Arabian Peninsula in the Middle East; it sh ...
, and the Netherlands
)
, anthem = ( en, "William of Nassau")
, image_map =
, map_caption =
, subdivision_type = Sovereign state
, subdivision_name = Kingdom of the Netherlands
, established_title = Before independence
, established_date = Spanish Netherl ...
.
A heavily modified variant of the PM5540 test card (absence of border castellations and other modifications) was used by Sjónvarpið/RÚV
Ríkisútvarpið (RÚV) (pronounced or ) ( en, 'The Icelandic National Broadcasting Service') is Iceland's national public-service broadcasting organization.
Operating from studios in the country's capital, Reykjavík, as well as regional cent ...
of Iceland
Iceland ( is, Ísland; ) is a Nordic island country in the North Atlantic Ocean and in the Arctic Ocean. Iceland is the most sparsely populated country in Europe. Iceland's capital and largest city is Reykjavík, which (along with its s ...
from 1966 until 1982, and by three regional broadcasters of the German
German(s) may refer to:
* Germany (of or related to)
**Germania (historical use)
* Germans, citizens of Germany, people of German ancestry, or native speakers of the German language
** For citizens of Germany, see also German nationality law
**Ger ...
public broadcasting corporation ARD (Sender Freies Berlin
Sender Freies Berlin (; abbreviated SFB ; ) was the ARD public radio and television service for West Berlin from 1 June 1954 until 1990 and for Berlin as a whole from German reunification until 30 April 2003. On 1 May 2003 it merged with Ostde ...
, Süddeutscher Rundfunk and Südwestfunk).
Some features of the main test card:
*Background - grid of 14 x 10 squares, each square with a white border 2 raster scan
A raster scan, or raster scanning, is the rectangular pattern of image capture and reconstruction in television. By analogy, the term is used for raster graphics, the pattern of image storage and transmission used in most computer bitmap image s ...
lines thick;
*Black and white squares - around the borders, with the four corners being white;
*Circle - has a diameter of 440 scan lines
A scan line (also scanline) is one line, or row, in a raster scanning pattern, such as a line of video on a cathode ray tube (CRT) display of a television set or computer monitor.
On CRT screens the horizontal scan lines are visually discernible, ...
;
*Definition lines - gratings corresponding to 0.8, 1.8, 2.8, 3.8 and 4.8 MHz
The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose expression in terms of SI base units is s−1, meaning that one he ...
, allowing measurement of image bandwidth and associated horizontal resolution ;
*Staircase - grayscale linear gradation in 5 steps;
*Background - uniform 50% lightness grey background;
*Needle pulse - white pulse on black background;
Besides the main "Complete Pattern", the hardware was capable of generating other patterns named as "Crossed Lines", "Black/White Steps", "Definition Lines", "Sawtooth", "Vertical Bars" and "Blank Pattern".
References
External links
PM5540 Black/White Pattern Generator
PM5540 Manual
Philips TV Measuring Equipment, 1980
Test cards Broadcast engineering {{Tv-tech-stub