KR930014320A - N-speed player for optical disc player - Google Patents

Abstract

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Description

N-speed player for optical disc player

As this is a public information case, the full text was not included.

1 is a flowchart of a control operation of a conventional N-speed play.

2 is an overall configuration diagram of an optical disc player of the present invention.

3 is a configuration diagram of an NX play device according to FIG.

4 is a timing diagram of an NX play device.

FIG. 5 is a configuration diagram of a track jump controller during 2N track jumping in FIG.

6 is a configuration diagram of a timing controller during 2N track jump.

7 is a timing diagram of each part according to FIG. 5;

8 is a timing diagram of each part according to FIG. 6;

FIG. 9 is a configuration diagram of a track jump controller during N track jump in FIG.

10 is a tracking error waveform diagram during N track jump according to FIG.

* Explanation of symbols for main parts of the drawings

1: micom 2: micom interface

3: N-speed play device 4: Analog (A) / Digital (B)

5: timing diagram control part 6: de-latch

7: track jump control unit 8: multiplexer

9: n-1 Bit Count 10: Demultiplexer

11: toggle flip-flop 12,22,26: AND gate

13,25: n-bit comparator 14: flip-flop

15: flip-flop 16: 1 clock generator

17,18: Oagate 19,21,24: RS flip flop

27: delay counter

Claims (4)

Cell (SEL) clock, load (LD), and enable signals are output in accordance with the N-speed play command (S-CMD) signal, the stop command (S-STOP) signal of the microcomputer interface, and the vertical sync (VSYNC) signal from the outside. The timing controller 5 for controlling the timing, the delatch 6 for latching the play data P-DATA to the N-speed play command data S-CMD, and the load from the timing controller 5 (LD). Digital tracking error (DTE) from which the latch (LDATA) is converted from the latch data (LDATA) to the tracking error (TEI) by the A / D conversion, and the tracking zero cross (T2C) from the outside. And a track jump controller 7 for jumping a 2N track by receiving a track pulse width (TPW) value for jumping a track, and a pulse width modulation (PWM) signal of the track jump controller 7 (S-PWM). ) Is inputted to the input terminal (A) from the outside by receiving a pulse-pulse width modulation (TE-PWM) signal to the other input terminal (B) N-play speed of the optical disk player apparatus by multiplexing under the control of the timing control unit (5), characterized in that the, including the multiplexer 8 for driving the tracking aektyu air emitter. 2. The track jump control unit (7) according to claim 1, wherein the track jump control unit (7) receives the latch data (LDATA) of the latch (6) and counts the signal according to the load (LD) and enable (EN) signals of the timing control unit (5). The demultiplexer 10 which receives the 1-bit counter 9 and the load LD signal of the timing controller 5 and determines the positive and the reverse code by using the most significant bit MSP of the latch data LDATA as the code bit. And a flip-flop that adds and outputs the most significant bit MSB to the tracking pulse width TPW input from the outside according to the output of the demultiplexer 10 and the carry output of the n-1 bit counter 9. (11), the n-bit comparator 13 for comparing the digital tracking error DTE and the tracking zero cross TZC which is a reference value, the output EQ of the comparator 13 and the enable of the timing controller 5 Optical device characterized in that the 2N track can be jumped by configuring the 2N end gate 12 that combines the (EN) output. N-play speed of the player unit. The timing controller 5 loads the microcomputer interface 2 in synchronization with the main clock MCLD to which the microcomputer interface 2 receives the N-speed play command (S-CMD) output as the data (D) input terminal. A deflip-flop 14 for outputting the (LD) signal, a flip-flop 15 which receives the carry output RCO of the track jump control unit 7 and divides it into two, and two of the flip-flop 15 The clock command (S-STOP) is reset to the set (S) terminal of the one-clock generator (16) which generates one clock by receiving the divided output, and the output (S-CMD) of the microcomputer interface (2). The first RS flip-flop 21 input to the R) terminal to control the VSYNC signal, and the AND gate 22 for and combining the outputs of the VZYNC signal and the first RS flip-flop 2. The output of the oragate 17 for ringing the output and the load signal of the flip-flop 14 is input to the set (S) terminal, and the output of the one-clock generator 1 and the microcomputer interface. The output of the ringing gate 18 for ringing the stop command (S-STOP) signal (2) is inputted to the reset (R) terminal to output an enable (EN) signal, and the noar gate 20 And a second RS flip-flop (19) for outputting a cell (SEL) signal through the N-fold player of the optical disc player. The track jump control unit 7 receives the latch data LDATA of the de-latch 6 and counts and carries the signal according to the load LD and enable signals of the timing control unit 5. An n-bit counter 23 for outputting the signal RCO, a delay counter 27 for counting and outputting a carry signal RCO after a predetermined time delay according to the main clock MCLK, and the timing controller 5 RS flip-flop 24 that receives the load (LD) signal from the reset (R) terminal and outputs a synchronized signal, and n bits for comparing digital tracking error (DTE) and tracking zero cross (TZC), which is a reference value. The comparator 25 and the output EQ of the n-bit comparator 25, the enable EN output of the timing control unit, and the output Q of the RS flip-flop 24 are combined in an n-bit counter ( 23. An optical disk drive comprising: an end gate 22 output to an enable terminal of < RTI ID = 0.0 > 23 < / RTI > Following N-play speed of the device. ※ Note: This is to be disclosed by the original application.