LC7458B-04 View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LC7458B-04

Closed-Caption Decoder IC

SANYO -> Panasonic 

LC7458B-04

Alarm Function

If the caption data on line 21H is the alarm ON code, then ALARM OUT (pin 6) goes high. This condition is maintained

until either an alarm OFF code is received or a decoder reset occurs.

OSD Display Start Positioning Function

After a reset, the levels on DISP ADJ0 to DISP ADJ5 (pins 36 to 38 and 42 to 44) at the next horizontal sync signal HS

rising edge determine the horizontal display start position out of a possible 64 positions.

The display start posision is given by

Start Position=[DISP ADJ5 to 0]×2×TLC

where TLC is the LC oscillator period.

Extended Characters

Of the 64 EIA-608 Optional Extended Characters, the following 16 are supported.

Data channel 1

12 20

12 21

Data channel 2

1A 20

1A 21

Symbol

A´

E´

Description

Capital ‘A’ with acute accent

Capital ‘E’ with acute accent

Also used for :

Portuguese

French, Portuguese

12 22

1A 22

Ó

Capital ‘O’ with acute accent

Portuguese

12 23

12 24

1A 23

1A 24

Ú

Capital ‘U’ with acute accent

Portuguese

U¨

Capital ‘U’ with diaeresis or umlaut French, German, Portuguese

12 25

1A 25

u¨

Small ‘u’ with diaeresis or umlaut

French, German, Portuguese

12 26

1A 26

‘

Opening single quote

12 27

1A 27

¡

Inverted exclamation mark

12 28

1A 28

*

Asterisk

ASCII

12 29

1A 29

'

Plain single quote

12 2A

1A 2A

–

em dash

12 2B

1A 2B

©

Copyright symbol

12 2C

1A 2C

SM

Service mark symbol

12 2D

1A 2D

°

Round bullet

12 2E

1A 2E

“

Opening double quotes

12 2F

1A 2F

”

Closing double quotes

No.4978–9/11

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