Abstract: A CD video-song accompaniment apparatus reproduces information from a compact disc and contains a CD reproducing portion, a CD-OK reproducing portion, and audio selector, and a main controller. The CD reproducing portion reads audio data from the compact disc and generates an audio signal if the compact disc is a first type of compact disc. On the other hand, the CD reproducing portion reads digital data from the compact disc if the compact disc is a second type of compact disc. The CD-OK reproducing portion inputs the digital data, which contains background image data and music information data, generates a first background image and a second background image based on the background image data, and generates a CD-OK audio signal based on the music information data. The audio selector inputs the audio signal generated by the CD reproducing portion and the CD-OK audio signal generated by the CD-OK reproducing portion and selectively outputs either the audio signal or the CD-OK audio signal.

Abstract: A data transmission device for converting parallel data into serial data and setting the transmission rate the converted data according to an arbitrary value of time data. The data transmission device includes a first input latch for latching N-bit parallel time data in response to a first input enable signal, and a transmission clock generator for generating a transmission clock signal by counting a system clock signal according to the latched N-bit parallel time data. It also includes a second input latch for latching N-bit parallel transmission data in response to a second input enable signal, and an output selection signal generator for counting the transmission clock signal in response to the second input enable signal and generating the counted value as an output selection signal. Further, the device includes a serial-to-parallel converter for converting the latched N-bit parallel transmission data signal into an (N+2)-bit serial data output signal in response to the output selection signal.

Abstract: A reproducing method of a reserved program and a compact disc player employing the method is provided. The method of reproducing a reserved program includes the steps of reading table of contents (TOC) information stored on a disc loaded in the compact disc player, storing the read TOC in a TOC memory, reading a reserved program recorded on the disc and storing the read program in a program buffer memory. Further, the method includes the steps of reproducing and outputting the program stored in the program buffer memory and simultaneously moving a pickup device to the starting location of the next reserved program according to the TOC information stored in the TOC memory. Furthermore, the method includes the steps of reading a reserved program from the location of the pickup device to store the read-out program in the program buffer memory after reproduction of the reserved program stored in the program buffer memory ends.

Abstract: An external sync image superimposing apparatus synchronizing an analog video signal with digital image data is provided by an apparatus which includes a sync separator for separating an external composite sync signal from an external composite image signal, a clock signal generator for synchronizing the frequency of the clock signal with an external sync signal according to a phase difference between the horizontal sync signal of the separated external composite sync signal and the internal horizontal sync signal and generating the adjusted clock signal, a sync signal generator receiving the adjusted clock signal for generating an internal composite sync signal and a reproduction address signal, a video memory for reading stored digital video information according to the reproduction address signal and a superimposing circuit for converting the digital video information from the video memory into an RGB signal, encoding the internal composite sync signal and the RGB signal as a color television signal, and su

Abstract: A CD player for reproducing signals stored on CD-OK and video compact disks (VCD) includes a first controller for controlling CD-OK reproduction; a second controller for outputting audio and video data for CD-OK reproduction and a control signal for VCD reproduction; a decoder for restoring compressed video and audio data; a first storage for storing control data for processing CD-OK signals during CD-OK reproduction and for storing control data for processing VCD during VCD reproduction; a second storage for storing data for a still screen and superposed data of the CD-OK disk during CD-OK reproduction and for storing video and audio data during VCD reproduction; a first digital-to-analog converter for converting the CD-OK video data output from the second controller into an analog image signal; a second digital-to-analog converter for converting image data output from the decoder into an analog image signal; a first switch for selecting one of the image signals output from one of the digital-to-analog conve

Abstract: A superimposing circuit includes an N-bit transmission gate for transmitting N-bit RGB data in a pixel unit in response to a blanking signal; a signal synthesizer for generating R, G and B signals, by separating each component of R, G and B from the N-1 least significant bits of the N-bit RGB data output from the transmission gate; an RGB matrix for receiving the R, G and B signals and generating a luminance signal, first and second color difference signals; a luminance signal amplifier for amplifying the luminance signal; a pair of modulators for modulating the first and second color difference signals, respectively; a first mixer for synthesizing the modulated color difference signal and generating a carrier color signal; a second mixer for synthesizing the carrier color signal, the amplified luminance signal and a complex synchronizing signal and generating a complex image signal; an attenuator for attenuating an external image signal; an image signal selector for selectively outputting the attenuated exte

Abstract: A disk recording medium includes a lead-in area, a program area and a lead-out area. The program area includes: a first track on which a plurality of data signals each of which has a different index from the others is loaded; a second track on which a plurality of programs is loaded, whereby the plurality of programs consists of the sequential combination of the indices of at least one data signal among the plurality of data signals and each program has a different index from the others; a third track on which a data index table comprising the indices of the respective data signals and initial address information is loaded; and a fourth track on which a program index table comprising the indices of the respective programs and initial address information is loaded.

Abstract: A disk recording medium includes a lead-in area, a program area and a lead-out area. More specifically, the program area includes a first track on which a plurality of data signals, each of which has a different index from all of the others, is loaded, a second track on which a plurality of programs are loaded, a third track on which a data index table including the indices of the respective data signals and initial address information are loaded, and a fourth track on which a program index table including the indices of the respective programs and initial address information are loaded. The lead-in area is loaded with a table of contents consisting of the initial address information and a plurality of pointers, each of which is different from all of the others each of which designates the respective tracks of the program area and the initial position of the lead-out area.