Title:
METHOD AND DEVICE FOR VARIABLE LENGTH ENCODING USING REDUCED NUMBER OF MEMORIES
Document Type and Number:
Japanese Patent JP2988825
Kind Code:
B2
Abstract:
PURPOSE: To optimize a memory space for storing a look-up table(LUT) in the case of encoding a digital signal into variable length by storing a variable length code LUT having the length of 18 bits in a 16-bit ROM.
CONSTITUTION: A variable length encoder 100 has a microprocessor 20 and a 16-bit ROM 30, receives a video signal as its input from a video signal processor 10 and outputs quantized data to the microprocessor 20. The microprocessor 20 reads the quantized data as a signal source code and suitably transforms them for accessing variable length code table data stored in the 16-bit ROM 30. In order to determine the length of variable length codes read out of the variable length code table, the variable length code is processed and the processed variable length code is sent out to a transmission channel.
Inventors:
KIN KOSHIN
Application Number:
JP7228094A
Publication Date:
December 13, 1999
Filing Date:
April 11, 1994
Export Citation:
Assignee:
DAIU DENSHI KK
International Classes:
H03M7/42; H03M7/40; (IPC1-7): H03M7/42
Domestic Patent References:
| JP5665569A | ||||
| JP60162382A | ||||
| JP61295765A | ||||
| JP61123280A | ||||
| JP6482782A | ||||
| JP4177916A |
Attorney, Agent or Firm:
Hidekazu Miyoshi (1 outside)