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...

Modulation is defined as the process by which some characteristics like amplitude, frequency, and phase of a carrier signal are varied in accordance with...

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...

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...

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

sinusoidal) that is modulated (modified) with an information-bearing signal (called the message signal or modulation signal) for the purpose of conveying...

Angle modulation is a class of carrier modulation that is used in telecommunications transmission systems. The class comprises frequency modulation (FM)...

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

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

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...

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

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...

MFC—Microsoft Foundation Classes MFT—Master File Table MFM—Modified Frequency Modulation MF—Medium Frequency MGCP—Media Gateway Control Protocol MHz—Megahertz...

Differential Manchester encoding (DM) is a line code in digital frequency modulation in which data and clock signals are combined to form a single two-level...

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

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...

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

Hierarchy signals Eight-to-Fourteen Modulation 4B5B 8b/10b encoding 64b/66b encoding HDLC Modified Frequency Modulation Anisochronous Morse code Asynchronous...

with an improved line code, such as modified frequency modulation (MFM), modified modified frequency modulation (M²FM), FM/MFM or group coded recording...

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

The modified Allan variance (MVAR), also known as mod σy2(τ), is a variable bandwidth modified variant of Allan variance, a measurement of frequency stability...

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...

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

Incremental frequency keying, also known as IFK or IFK+, is a modified type of MFSK modulation where the data to be transmitted is represented by the difference...

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

AM radio's audiences declined greatly due to competition from FM (frequency modulation) radio, Digital Audio Broadcasting (DAB), satellite radio, HD (digital)...

rate. The command data rate is 423.75 kbit/s encoded using modified frequency modulation (MFM). Tags reply to the interrogator by inductive coupling...

made possible as the SuperDrive now utilitized the same MFM (Modified Frequency Modulation) encoding scheme used by the IBM PC, yet still retained backward...