Yes, I found that it is nec, and tried to take code from here:

http://www.picbasic.co.uk/forum/showthread.php?t=15368

and modified it to my needs:

Code:
Include "modedefs.bas"  ' Include serial modes
'DEFINES FOR LCD PORTS
DEFINE LCD_DREG PORTB
DEFINE LCD_DBIT 4
DEFINE LCD_RSREG PORTB
DEFINE LCD_RSBIT 0
DEFINE LCD_EREG PORTB
DEFINE LCD_EBIT 1
DEFINE LCD_BITS 4 
DEFINE LCD_LINES 2
DEFINE LCD_COMMANDUS 1500
DEFINE LCD_DATAUS 44 

define osc 4

ADCON1=%00000110 'CONFIGURE PORT A AS DIGITAL
'TRISA=1 'CONFIGURE PORT A AS INPUT
low TRISB
LOW TRISC
LOW TRISA


Leader VAR WORD     ' will be up to 900 for a 9mS leader pulse
BtnVal VAR BYTE[32] ' holds 32 pulse results
DByte1 VAR BYTE     ' address byte
DByte2 VAR BYTE     ' inverse of address byte
DByte3 VAR BYTE     ' command byte
DByte4 VAR BYTE     ' inverse of command byte
X      VAR BYTE     ' loop count

LCDOUT $FE, 1,  "test " 
 
Main: 
  PULSIN PORTC.4,0,Leader  ' leader pulse is ~9mS low-going
  IF Leader < 850 THEN Main
 
  FOR X = 0 TO 31          ' grab 32 incoming pulses
      PULSIN PORTC.4,1,BtnVal(X) ' now measuring high-going pulse widths
  NEXT X
 
  ' now we'll decode 4 bytes from 32 pulses
  FOR X = 0 TO 7               ' sort 1st 8 pulses
      IF BtnVal[X] > 150 THEN  ' > 150 x 10uS = > 1.5mS pulse period
         DByte1.0[X]=1
      ELSE
         DByte1.0[X]=0
      ENDIF
  NEXT X
 
  FOR X = 8 TO 15              ' sort 2nd 8 pulses, etc....
      IF BtnVal[X] > 150 THEN
         DByte2.0[X-8]=1
      ELSE
         DByte2.0[X-8]=0
      ENDIF
  NEXT X
 
  FOR X = 16 TO 23
      IF BtnVal[X] > 150 THEN
         DByte3.0[X-16]=1
      ELSE
         DByte3.0[X-16]=0
      ENDIF
  NEXT X
 
  FOR X = 24 TO 31
      IF BtnVal[X] > 150 THEN
         DByte4.0[X-24]=1
      ELSE
         DByte4.0[X-24]=0
      ENDIF
  NEXT X
 
LCDOUT $FE, 1, #dbyte1, " ", #dbyte2, "    "  
LCDOUT $FE, $C0,#dbyte3, " ", #dbyte4, "    "  
 
  PAUSE 1000
  GOTO Main
The problem is, it still does not works. It displays "0" when I press a key on remote. Sometimes, it will display something, like 4 or 170, but it never matches the key pressed and never repeats.