Abstract: A method of recording/reproducing data on a storage medium. The method includes decoding a radio frequency (RF) signal read from the storage medium into corresponding binary data; storing the binary data in an external memory connected with a host interface through which a host inputs an instruction to read data from the storage medium; and storing data read from the external memory in an internal memory and performing ECC error correction on the data, wherein the internal memory is directly connected to an ECC unit that performs ECC error correction and has a data storage capacity of one ECC block.

Abstract: A method of and apparatus to data encode and decode for improving the reliability of data that is compatible with a conventional error correction code (ECC) block format, a storage medium, a system to drive the storage medium, and a method of generating an extra parity ECC block, the data encoding method including generating N number of ECC blocks with respect to user data and generating at least one extra parity ECC block for the generated N number of ECC blocks.

Abstract: An apparatus and a method of detecting a sync signal, the apparatus including a sync determiner selecting an output sync pattern from a candidate sync signal generated by pattern matching in lock and/or unlock modes and selecting one of candidate sync patterns of the candidate sync signal having a cycle synchronizing with a sync cycle as an output sync pattern to generate an output sync signal; and a mode determiner determining a mode based on the candidate sync signal, a mode conversion threshold value, and a selection number of times the candidate sync pattern is selected as the output sync pattern.

Abstract: A method of recording/reproducing data on a storage medium. The method includes decoding a radio frequency (RF) signal read from the storage medium into corresponding binary data; storing the binary data in an external memory connected with a host interface through which a host inputs an instruction to read data from the storage medium; and storing data read from the external memory in an internal memory and performing ECC error correction on the data, wherein the internal memory is directly connected to an ECC unit that performs ECC error correction and has a data storage capacity of one ECC block.

Abstract: An error flag generation apparatus and method for error correction, wherein the apparatus includes: a frame-sync error memory which stores frame-sync error information for each data block; a BIS (Burst Indicator Subcode) error flag memory which stores a BIS error flag for each data block; and an error flag generator, which generates an error flag indicating error existence/absence for ECC (Error-Correction Coding) data with reference to the frame-sync error information stored in the frame-sync error memory and the BIS error flag stored in the BIS error flag memory. Therefore, the error flag generation apparatus and method for error correction can be easily implemented with improved error-correction performance and be advantageous in cost.

Abstract: An optical disc reproducing device (hereinafter referred to as a CD player) that reproduces a CD (Compact Disc) audio signal, and more particularly, an apparatus is provided, which is designed to accurately control the speed of a spindle motor by reflecting the gap between two points in a buffer where data is recorded and the recorded data is read respectively. The spindle motor speed control apparatus of the CD player which reproduces an audio signal using data reproduced by the disc and buffered on the buffer includes an EFM demodulator, a frequency error measurement unit, a buffer, a lead/lag detector and a motor control signal generator. The apparatus can dynamically control the speed at which data stored on the disc is read more easily and reliably by controlling the spindle motor speed.

Abstract: A video record/playback apparatus for reproducing a video recording medium containing a videogram performs a playback operation of the video recording medium, based on comparison of a program rating corresponding to the videogram and a user rating code determined by a user. In this video record/playback apparatus, a key input unit is used for inputting at least one user rating code and a program rating code corresponding to the videogram. A recording/reproduction unit records the input program rating code on the video recording medium and reproduces the video recording medium. A rating code insertion/separation unit inserts the program rating code into the videogram to be recorded on the video recording medium and separates the program rating code from the video signal supplied from the recording/reproduction unit. A storage unit stores the input at least one user rating code.

Abstract: A closed-caption broadcasting and receiving method and apparatus. According to the closed-caption broadcasting method and apparatus, character information and control information are inputted, and a control code of 2 words and a character code of 2 words including a syllable character completion type code are produced. The control code is obtained by combining the control information with a mode control bit and a parity bit, and the character code is obtained by combining the character information with a mode control bit and a parity bit. A digital-modulated caption signal is produced by inputting the control code and the character code, and is coded on a scanning line which does not affect a television video signal to be transmitted.

Abstract: A soft scrolling method and apparatus of closed-caption words whereby caption information which is encoded in a horizontal line of each field of a television broadcasting signal which does not affect the broadcasting signal is displayed on a display screen of a receiver, as being scrolled line by line by selection of a viewer. According to the method, whether or not the present mode is a soft scroll mode is discriminated, and if so, character data is read out from a display memory, in which decoded caption information is stored, for a line or several lines at predetermined intervals into which a one-row scrolling time is equally divided. The readout character data is converted into a video signal to be displayed on the display screen.

Abstract: A closed-caption broadcasting and displaying method and apparatus. According to the closed-caption broadcasting method and apparatus, a caption signal including character information and control information is encoded in a scanning line of each field of a television broadcasting signal to be transmitted, which does not affect the television broadcasting signal. Control information on the writing direction and display position among the control information is repeatedly transmitted at predetermined intervals.

Abstract: A method of detecting a phase associated with a sinusoidal signal over a period associated with the sinusoidal signal, the method comprising the steps of: sampling the sinusoidal signal at a prescribed sampling frequency every period thereby generating a plurality of sampling values; converting the plurality of sampling values to a plurality of digital values; respectively evaluating said plurality of digital values within a first period and a latter period associated with the period of the sinusoidal signal, the evaluation of each period generating respective resulting digital values; and determining the phase associated with the sinusoidal signal according to the resulting digital values of the first period and the latter period.

Abstract: A video signal processor for compensating for skew and eliminating noise operable during a high speed search mode of operation includes a synchronizing signal generator receiving a clock and generating a pseudo horizontal sync signal, a controller, initialized in a first logic state of a horizontal synchronizing signal, for counting the period of a second logic state in the horizontal synchronizing signal with reference to the clock for generating a compensated composite synchronizing signal when a counted value exceeds a predetermined value and for generating a compensation control signal having a duration of one horizontal period, line memories and field memories for storing and delaying input video data in terms of line and field units, respectively, for output, a video data compensator for supplying the output of the line memories to the field memories in a first operating mode and feeding back the output of the line memories in a second operating mode responsive to the compensation control signal, and a

Abstract: A signal processing device and method which performs stable video signal reproduction in a slow mode function of a video tape recorder by digitally storing only those slow mode images which are stable.