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...

Another purpose of modulation is to transmit multiple channels of information through a single communication medium, using frequency-division multiplexing...

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...

more of its properties modified (the called modulation) by an information-bearing signal (called the message signal or modulation signal) for the purpose...

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

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

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

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...

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

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

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...

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...

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...

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...

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

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

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

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...

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

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

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...

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

cartridge during manufacture. Data is encoded on the disk using Modified Frequency Modulation, where a one bit will result in a magnetic flux reversal on...

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

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

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