UPD64083 NEC, UPD64083 Datasheet

UPD64083

Manufacturer Part Number

UPD64083

Description

3 Dimensional Y/C Separation IC with On-Chip Memory

Manufacturer

NEC

Datasheet

1.UPD64083.pdf (3 pages)

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The µPD64083 is a single-chip NTSC 3-D

Y/C separation IC that achieves superior

TV picture quality by incorporating the

conventionally external 4 Mb frame

memory on the chip.

Introduction

PDP panel televisions has brought significant

increases in demand for larger screens with

higher resolution, and a higher screen quality to

match. A better picture quality than that provided

by the conventional terrestrial TV broadcasts

(NTSC signals) both in Japan and in North

America is being especially looked for due to

the arrival of high-picture-quality digital media,

such as the increasingly popular DVD video and

Japan’s BS Digital satellite TV service, which

started last year. Not limited to television,

demands for high-quality terrestrial NTSC

signals are also being felt in related fields, such

as high-picture-quality digital image recording

devices (DVD recorders, hard disk recorders)

and PCs that include TV functions.

NTSC signals is a high-precision Y/C separation

function. Most televisions employ two-

dimensional Y/C separation performed using

inter-line processing, but this kind of separation

invariably results in “cross color” (color noise

such as fine diagonal lines occurring in the

pattern) and “hanging dots” (network noise that

occurs on the edge of the color).

been developing and commercializing a range

of motion-adaptive 3-D Y/C separation ICs that

can be used to minimize cross color and hanging

dot noise.

Development Background

4:3 TVs in the Japanese television market

incorporate a 3-D Y/C separation function, as

do most 30-inch or over and 50-inch class

projection TVs in the North American market.

Realizing that 3-D Y/C separation ICs are the

key device in these large-size televisions, NEC

The recent advent of flat-screen, LCD, and

The key to improving the picture quality of

In order to solve these problems, NEC has

Almost all wide TVs and most 29-inch or over

NEW PRODUCTS 2

THREE-DIMENSIONAL Y/C SEPARATION IC WITH ON-CHIP MEMORY

µPD64083

has focussed considerable development

resources in this area and has gained a reputation

from both television makers and end users for

providing products that are superior in terms of

functionality, performance and price: an effort

that has been rewarded with the achievement of

a 70% or more share in this market.

tended to be complex and expensive, due in part

to the necessity of providing memory to save

picture data on a frame-by-frame basis.

Moreover, the EDO DRAM that was

conventionally attached externally for this

purpose was a major source of noise, which then

had to be countered by even more complex board

design, resulting in even higher cost.

developed the µPD64083, a new single-chip 3-

D Y/C separation IC that realizes high-precision

separation by incorporating on the chip the 4 Mb

memory that was conventionally attached

externally (Photo 1). With this new IC, users

can now create a high-picture-quality, noise-free

3-D Y/C separation system with little effort.

C separation ICs is shown in Figure 1.

Product Outline

required for Y/C separation of terrestrial

broadcasts (NTSC signals) for high-picture-

quality TV, including a 2-channel 10-bit A/D

Photo 1 NEC's 3-D Y/C Separation LSI with On-Chip Memory "µPD64083"

However, 3-D Y/C separation systems have

Against this background, NEC has now

The development roadmap of NEC’s 3-D Y/

This IC integrates on one chip all the functions

*Digital Consumer Group, Sales Engineering Division (Published January 2002)

converter, clock generator, 2-channel 10-bit D/

A converter, I

3-D Y/C separation, motion detection,

nonstandard detection, and frame recursive noise

reduction.

µPD64083.

(S pin input) can be input as the input signal. If

the former is input, the 3-D Y/C separation

function can be used, and if the latter, the noise

reduction function can be used. Furthermore,

for a composite or luminance signal, not only is

the 10-bit A/D converter used, but the signals

are also processed internally in 10 bits, giving

this IC the industry’s highest grayscale

reproduction performance as a consumer TV

signal processor. The incorporation of a number

of additional functions, including vertical border

correction, horizontal peaking, coring, ID-1

signal detection, and noise detection, also makes

this IC unrivaled in terms of versatility.

Features

1. Single-chip system

were made up of a number of different chips

(memory, etc.), the µPD64083 integrates all

these functions on a single chip. Now, all that

needs to be provided externally are several

discrete circuits such as a picture I/O circuit, 20

MHz

Figure 2 shows a block diagram of the

Either a composite signal or separate signals

Whereas previous 3-D Y/C separation systems

crystal

C bus register, motion-adaptive

for

Ikuo Hirama*

clock

generation,

Related parts for UPD64083

UPD64083 Summary of contents

Page 1

... TVs in the North American market. Realizing that 3-D Y/C separation ICs are the key device in these large-size televisions, NEC Photo 1 NEC's 3-D Y/C Separation LSI with On-Chip Memory "µPD64083" has focussed considerable development resources in this area and has gained a reputation from both television makers and end users for ...

Page 2

... Y-ADC µPD64088 Clock generator 2M FIFO 1M FIFO 1996 1997 1998 ˜ Fig. 1 Development Roadmap of NEC's 3-D Y/C Separation ICs 10-bit digital comp. input 10-bit Y/C separator & Clamp Y-ADC Y-noise reducer 10-bit C-Delay & Bias C-ADC C-noise reducer Ext. ...

Page 3

... In fact these signals are starting to perform a new role as the front-end block of digital video signals. NEC therefore plans to continue developing a range of analog video signal processor ICs based on its advanced 3-D Y/C separation technology to meet the varied needs of the AV equipment market ...

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