LC822973 Просмотр технического описания (PDF) - SANYO -> Panasonic

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Компоненты Описание

производитель

LC822973

TV Image Viewer LSI

SANYO -> Panasonic 

General Operation

LC822973

[Operation 1.]

The rotation processing is performed at the time of SDRAM writing. As a result, a vertically long image of small size

such as QQVGA, QVGA, etc. is rotated 90 degrees and it is possible to display on TV (VGA size image).

CPU I/F

QQVGA-QVGA

SDRAM

NTSC

encoder

VGA

[Operation 2.]

The enlargement processing can be realized by filter processing that utilized line memory for reading data from

SDRAM. The small size image such as QQVGA and QVGA can be displayed on TV screen fully (VGA size). An

enlargement ratio can be set optionally (2×(n+1)/256, n: 128 to 255). If the displayed image after enlargement is smaller

than VGA size, other than target image can be set to background level (brightness/color setup possible).

This operation can be combined with the above rotation function.

QQVGA-QVGA

CPU I/F

SDRAM

Enlarge-

ment

circuit

NTSC

encoder

VGA

[Operation 3.]

The enlargement processing can be bypassed if writing image size from CPU fits VGA image size exactly. Degradation

of broad area level due to filter processing can be prevented.

VGA

CPU I/F

SDRAM

NTSC

encoder

VGA

[Moving image processing]

This LSI is the system that supports moving image that made writing from CPU and competitive operation of TV

display (real-time reading from SDRAM) possible by using high-speed clock operation.

The moving image performance (supportable frame rate) improves by raising SDRAM clock frequency through PLL

setup. However, the current consumption increases significantly.

No.A2131-9/27

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