Modified frequency modulation (MFM) is a run-length limited (RLL) line code used to encode data on most floppy disks and some hard disk drives. It was...

a 5+1⁄4-inch disk. IBM began introducing the more efficient modified frequency modulation, or MFM, starting in 1970. They referred to this format as "double...

carrier wave. Phase modulation is one of the two principal forms of angle modulation, together with frequency modulation. In phase modulation, the instantaneous...

low frequency radio waves, wavelength is on the scale of kilometers and building such a large antenna is not practical. Another purpose of modulation is...

information through a process called modulation. One or more of the wave's properties, such as amplitude or frequency, are modified by an information bearing signal...

Manchester Mark and space MLT-3 encoding Modified AMI codes: B8ZS, B6ZS, B3ZS, HDB3 Modified frequency modulation, Miller encoding and delay encoding Non-return-to-zero...

Pulse-width modulation (PWM), also known as pulse-duration modulation (PDM) or pulse-length modulation (PLM), is any method of representing a signal as...

Encoding schemes used included Frequency Modulation (FM), Modified Frequency Modulation (MFM) and RLL encoding at frequencies for example ranging from 0.156 MHz...

In electronics, ring modulation is a signal processing function, an implementation of frequency mixing, in which two signals are combined to yield an output...

interchange on 90 mm (3,5 in) flexible disk cartridges using modified frequency modulation recording at 15 916 ftprad, on 80 tracks on each side) is a...

They were typically implemented on a separate controller card. Modified frequency modulation (MFM) controllers were the most common type in small computers...

modulation is a class of signal modulation that is used in telecommunication transmission systems using carrier waves. The class comprises frequency modulation...

earliest and simplest variants were given specific names, such as modified frequency modulation (MFM), and the name "RLL" is commonly used only for the more...

Delta modulation (DM, ΔM, or Δ-modulation) is an analog-to-digital and digital-to-analog signal conversion technique used for transmission of voice information...

quality compared to the previous frequency-division multiplexing schemes. In 1973, adaptive differential pulse-code modulation (ADPCM) was developed, by P...

audio (44,100 Hz sampling rate and 16-bit resolution) using modified frequency modulation encoding. In September 1978, Sony demonstrated an optical digital...

FM broadcasting is a method of radio broadcasting that uses frequency modulation (FM) of the radio broadcast carrier wave. Invented in 1933 by American...

number of mechanisms exist for obtaining an optical frequency comb, including periodic modulation (in amplitude and/or phase) of a continuous-wave laser...

through long distances. In general, video modulation means that a higher frequency carrier wave is modified according to the original video signal. In...

Sound, a UK radio station MFM Radio, a French radio station Modified frequency modulation, a data encoding method used on floppy disks and older hard...

Coded Recording (GCR - Apple, Commodore), Frequency Modulation (FM - Atari), or Modified Frequency Modulation (MFM - Amiga, Atari, IBM PC). Software piracy...

fundamental frequency. Interference happens when two networks try to operate in the same band, or when their bands overlap. The two modulation methods used...

is the modulation depth and f m {\displaystyle f_{m}} is the frequency of the modulating signal, then for amplitude modulation the two modulation phasors...

MF—Medium Frequency MFA—Multi-factor authentication MFC—Microsoft Foundation Classes MFD—Multi-function device MFM—Modified Frequency Modulation MFP—Multi-function...

(PDH) signals Eight-to-fourteen modulation (EFM) 4B5B 8b/10b encoding 64b/66b encoding HDLC Modified frequency modulation (MFM) Anisochronous Morse code...

Multidimensional modulation (MD modulation) is modifying or multiplying an MD signal (typically sinusoidal and referred to as the carrier signal) with...

interchange on 130 mm (5.25 in) flexible disk cartridges using modified frequency modulation recording at 7 958 ftprad, 3,8 tpmm (96 tpi), on both sides...

and a different, incompatible recording format called MFM (Modified Frequency Modulation). GCR and MFM drives (and their formatted disks) were incompatible...

vary the RMS voltage while maintaining a constant frequency with a technique called pulse-width modulation (PWM). The generated gate pulses are given to each...

for interaction. The primary modes for vocal communications are frequency modulation (FM) and single sideband (SSB). FM is recognized for its superior...