SECAM is an abbreviation for Sequential Color and Memory or Séquentiel couleur à mémoire in French.
SECAM is an analog color television system first used in France. A team led by Henri de France working at Compagnie Française de Télévision (later bought by Thomson) invented SECAM. SECAM uses the same resolution as PAL (625 lines) but transmits the color information sequentially: R-Y on one line and B-Y on the next....
PAL is an abbreviation for Phase Alternating Line.
PAL is a color encoding system used in broadcast television systems in large parts of the world. The PAL TV standard came into the market in early 1960s Europe. The term PAL describes any video, including digital video, formatted for playback on a PAL TV....
NTSC is an abbreviation for National Television System Committee.
The NTSC is responsible for setting television and video standards used in North America, most of South America, and some other countries. The NTSC standard for television defines a composite video signal with a refresh rate of 30 interlaced frames per second. Each frame contains 525 lines and can contain 16 million distinct colors....
A pixel is an abbreviation for a picture element. A pixel is the smallest component of an image or picture. Pixels are arranged in rows and columns to produce a complete image.
The number of pixels in an image is called resolution. Screen resolution is rated by the number of horizontal and vertical pixels; for example, 1024×768 means 1,024 pixels are displayed in each row (columns), and there are 768 rows (lines). The greater the number of pixels per inch the greater the resolution....
MESECAM stands for Middle Eastern Secam. MESECAM is not a broadcast standard. It is a VCR “standard” by which the color under process in VCRs is done by subcarrier shift instead of by frequency division. This means that an original Secam recording (frequency division) does not play back in a MESECAM player.
MESECAM uses an AM subcarrier and SECAM uses FM subcarrier. When MESECAM records a color signal onto VHS or Betamax video tape, the luminance signal is recorded in its original form (albeit with some reduction of bandwidth) but the chrominance signal of about 4.4 MHz is too sensitive to minor changes in frequency caused by inevitable small variations in tape speed to be recorded directly. Instead, it is first down-converted to the lower frequency of 630 kHz, and the complex nature of the PAL subcarrier means that the down-conversion must be done via a superheat mixer to ensure that information is not lost....
Yes! There are some ways you can use to convert from PAL to NTSC or vice versa.
1. The easiest way is buying a region-free DVD player, many modern DVD players will play and convert both NTSC and PAL DVDs and will also play DVDs that may have specific regional encoding, helping to avoid the regional problems created by the different formats and specifications....
PAL-60 is NTSC with the chroma part converted to PAL (both encoding and subcarrier frequency, 4.43 MHz). PAL-60 or “pseudo PAL” stands for 60 Hz, instead of 50 Hz. The PAL color system, either baseband or with any RF system, with the normal 4.43 MHz subcarrier unlike PAL-M, can also be applied to an NTSC-like 525-line (480i) picture to form what is often known as “PAL-60”, sometimes “PAL-60/525” or “Pseudo PAL”.
This non-standard signal is a cheap method used in European domestic VCRs and DVD players for playback of NTSC material on PAL televisions. It’s not identical to PAL-M and incompatible with it, because the color subcarrier is at a different frequency; it’ll therefore display in monochrome on PAL-M and NTSC television sets....
There are 3 main analog video standards in use around the world.
PAL (Phase Alternating Line)
NTSC (National Television System Committee)
SECAM (Séquentiel couleur à mémoire – Sequential Color with Memory)...
The NTSC 3.58 is a pure US and Japanese TV system. NTSC 4.43 is used on PAL video recorders which can play NTSC on PAL and allow the reproduction of American video tape on PAL TV.
NTSC 4.43 is also known as NTSC-J. It is a “PAL-type” NTSC in that it uses the same sub-carrier color frequency as PAL (in comparison to o NTSC-J (4.43) is used only in Japan. NTSC-M (3.58) is used elsewhere in other NTSC countries....
NTSC 4.43 is also known as NTSC-J. NTSC 4.43 is a pseudo color system that transmits NTSC encoding (525/29.97) in a color subcarrier of 4.43 MHz instead of 3.58 MHz
The resulting output is only viewable by TVs that support the resulting pseudo-system (usually multi-standard TVs). Using a native NTSC TV to decode the signal yields no color....
There are five varieties of SECAM:
1. French SECAM (SECAM-L)
French SECAM (SECAM-L) is used only in France, Luxembourg (only RTL9 on CH 21 from Dudelange), and Tele Monte-Carlo Transmitters in the south of France....
There are five varieties of PAL:
1. PAL B/G/D/K/I
The majority of countries using PAL have television standards with 625 lines and 25 frames, differences concern the audio carrier frequency and channel bandwidths. Standards B/G are used in most of Western Europe, standard I in the UK, Ireland, Hong Kong, and Macau, standard D/K in most of Eastern Europe, and Standard D in mainland China....
There are three varieties of NTSC:
1. NTSC-M
Unlike PAL, with its many varied underlying broadcast television systems in use throughout the world, NTSC color encoding is invariably used with broadcast system M, giving NTSC-M....
Standard Definition TV (SDTV)
SDTV is the basic level of quality display and resolution for both analog and digital. Transmission of SDTV may be in either the traditional (4:3) or widescreen (16:9) format. Digital SDTV provides pictures and sounds comparable to the best available analog TV....
The difference between Analog TV and Digital TV boils down to the way the TV signal is transmitted. Standard analog TV is transmitted in a manner similar to radio.
In fact, the video signal of analog television is transmitted in AM, while the audio is transmitted in FM. Analog TV is subject to interference, such as ghosting and snow, depending on the distance and geographical location of the TV receiving the signal....
“DTV” is a general reference to Digital Television, as compared to “analog” Television. DTV broadcasts can be either HDTV (high-definition television) or SDTV (standard-definition television). HDTV can broadcast at resolutions typically as high as 1920 by 1080 pixels (2 million pixels), whereas the resolutions of SDTV broadcasts are typically only as high as 640 by 480 pixels (290,000 pixels).
In comparison, analog television produces a total of about 210,000 pixels. Broadcasters and cable providers can choose which format of DTV they transmit, and most DTVs and new HDTV set-top boxes will be able to receive the signal regardless of which format is transmitted. Note, however, that your standard analog TV set will not be able to receive DTV signals (neither HDTV nor SDTV)....
TVs connected to cable, satellite, or other pay services do not require a TV converter box from this program to receive programs after February 17, 2009. Check with your cable or satellite provider to determine how they will support your analog set after February 17, 2009. Time Warner, Comcast, and Direct TV Cable are already broadcasting digital programming.
The cable companies have agreed to continue to furnish analog versions of the locally available over-the-air digital TV until 2012 or to furnish converter boxes. What they choose to do regarding any other analog TV they presently have, is up to them....
Digital TVs have labeled as “Integrated Digital Tuner,” “Digital Tuner Built-In,” “Digital Receiver,” or “Digital Tuner,” “DTV,” “ATSC,” or “HDTV” (High Definition television). If your television equipment contains any of these labels or markings and it contains a digital tuner, you can view over-the-air digital programming without the need for a digital-to-analog converter box.
The only televisions that have DTV turners are those that since about 1998, have been sold as having an integrated or “built-in” DTV or HDTV broadcast turner. (An HD set sold as a “monitor” or “HD-ready” is capable of displaying HDTV but does not have a built-in HDTV turner) Most TVs with analog turners are now required by the FCC to also be marketed with built-in or separate DTV or HDTV turners – this will soon be a requirement for all TVs....
There are many quality levels of digital television programming. The most common are:
Standard Definition TV (SDTV) – SDTV is the basic level of quality display and resolution for both analog and digital. Transmission of SDTV may be in either the traditional (4:3) or widescreen (16:9) format....
A Digital to Analog Converter Box or Digital Television (DTV) Converter Box is an electronic device that converts the new free over-the-air digital signal into an analog signal viewable on an older “analog” television set.
A digital-to-analog converter box will not give you a digital picture on an analog TV set but will not convert your analog TV set into a high-definition TV, also known as an HDTV....