Sharp JC-K99 - Key Input

Remote control
circult
Switch ON
Ptn15 of [C4 Y
ENS oS Say ee
When Pressing
When Pressing
When Presstneé
! When Presstng
Putse-generating
1.
SV
H
circuit - 7
4]
ADProx.
8msec
wide’
OV ---
Figure 15—2
APProx. 8msec
Pini5 SWIN
of
Ics
Pini OPST
of
Ics
6.12msec
H1
OREN
pcrs<Ge
sass
as
6.
2msec
OF ex ee
1
QPENietus
oase2.
8
Deore!
|
&.
2msec
H2
‘
=
OV Site es ayes Se a !
| !
OPEN
-----------b--4.--
L--46.
2msec
H3
;
ae
pa
ee
t 1 i
OPEN
-----------
pon
de--
L
|
H4 : '
OV -----------b--4--- r
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Figure 15—4
ote
Remote contro!
voltaée-divider
VvCC=1. 5V
unit
MECHANISM
CONTROL
MICRO-
COMPUTER
Open
drain
outPut
X-BASS
FF/REW
STOP Hl
PLAY areal ber er era voltage
generating circuit
Figure 15—1
600msec isec
t
a ae
1 REY INGOT KEY INPUT
t__(FF MODE) |! ENABLEO
Figure 15—5 FF (=>)
WITHIN
600msec isec
hag tg
AF Sabrey | KEY ENPUT
CREW MODE) ; ENABLED
ee |
THE
KEY
IS
PRESSED
TWICE
WITHIN
600msec.
Figure
15-6
REW
(CD)