KR940009976A - Cross Interleave Method and Circuit - Google Patents

Abstract

The cross-interleave method and circuit are designed to compensate for the difference between the memory capacity and the input / output data rate used by generating an address based on the output data, and to reduce the capacity of the memory that is substantially used for each channel.

To this end, for each channel, based on the output data output from the encoding system, the output data according to the cross-interleave rule and the Q encoding address delayed by a predetermined delay amount between the generation of the P encoding address and the Q encoding address are generated. The address of the input data by a predetermined amount of delay and mixing between the Q encoding address and the input data according to the cross-interleave rule at the address ?? It is a process to obtain. In addition, the sync counter for counting the sync signal output from the controller, the counter counter for counting the symbolic luck signal, cleared by the DATATIME signal from the controller, and encoding for the cross interleave. At least one memory for storing data and input and output data separately and simultaneously generating an address corresponding to a signal output from a symbol counter, and a corresponding one of addresses generated in the memory by a selection control signal output from the controller Selecting means for selecting and outputting only the address of the data, adding the data output from the selecting means and the signal output from the sink counter, reconfiguring with an adder for outputting the address for the cross-interleave into memory, and outputting the output signal of the encoding system. group As to comprises a process to variably set a memory area allocated to each channel by a difference between the set value to be encoded for each channel by the delay amount, and set the value of the cross-interleaving rule.

Description

Cross Interleave Method and Circuit

Since this is an open matter, no full text was included.

9 is the contents of the frame table and offset table of FIG. 2 according to the present invention.

10 is another embodiment of a cross-interleave circuit according to the present invention.

FIG. 11 shows the contents of Romans 1 to 4 according to FIG. 10.

Claims (4)

A cross-interleave method of an encoding system for a compact disc, comprising: a controller for generating a control signal required for a cross-interleave; and a cross-interleaver for generating a frame and an offset address according to a control signal output from the controller. P encoding address generation process for generating P encoding address delayed by a predetermined amount of delay between the output data and P encoding address generation according to the cross-interleave rule for each channel on the basis of the output data to be output, and P encoding address generation process Q encoding address generation process for generating a Q encoding address delayed by a predetermined amount of delay between the P encoding address and the Q encoding address generation according to the cross-interleave rule, and occurs in the Q encoding address generation process. Input data address generation process for generating an address of the input data whose address is delayed by two with respect to the frame of the output signal by a predetermined amount of delay and mixing between the Q encoding address and the input data according to the cross-interleaving rule in the address. Cross-interleave method characterized in that it comprises a. A cross of a compact disc encoding system having a controller for generating a control signal, a cross interleave portion for generating an address for a cross interleave, and a first memory for reading data by an address signal output from the cross interleave portion. In the interleaving arrangement, the cross interleave unit may include a sink counter for counting sync signals output from the controller, a symbol counter for counting symbol clock signals cleared by a data time signal output from the controller, and a cross counter. At least one second memory for storing encoding data for interleaving and input and output data separately and simultaneously generating an address corresponding to a signal output from the symbol counter, based on a selection control signal output from the controller Selection means for selecting and outputting only the address of the corresponding data among the addresses generated in the second memory, and adding the data output from the selection means and the signal output from the sink counter to add the address for the cross-interleave to the first address. And an adder for outputting to a memory. A cross-interleave method of an encoding system of a compact disc, comprising: an encoding value setting process for setting an encoding value corresponding to a data section of each channel by a delay amount according to a cross-interleave rule based on an output signal of the encoding system; And a memory area setting step of variably setting a memory area allocated to each channel by a difference between encoding values of data sections set in the encoding value setting step. 4. The cross-interleaving method of claim 3, wherein the memory area set in the memory area setting process is formed to have a difference according to the number of buffers allocated to the channel by a loss interleaving rule. ※ Note: The disclosure is based on the initial application.