Philips SAA4990H-V0, SAA4990H-V1, SAA4990H-V2 Datasheet

DATA SH EET

Preliminary specification
File under Integrated Circuits, IC02

1996 Oct 25

INTEGRATED CIRCUITS

SAA4990H

Progressive scan-Zoom and Noise
reduction IC (PROZONIC)

1996 Oct 25 2

Philips Semiconductors Preliminary specification

Progressive scan-Zoom and Noise
reduction IC (PROZONIC)

SAA4990H

FEATURES

• Progressive scan conversion
(262.5 to 525 or 312.5 to 625 lines/field)

• Field rate up-conversion (50 to 100 Hz or 60 to 120 Hz)

• Line flicker reduction

• Noise and cross-colour reduction

• Variable vertical sample rate conversion

• Movie phase detection

• Synchronous No parity Eight bit Reception and

Transmission (SNERT) interface.

GENERAL DESCRIPTION

The Progressive scan-Zoom and Noise reduction IC,
abbreviated as PROZONIC, is designed for applications
together with:

SAA4951WP Economy Controller (ECO3)
SAA4952H (memory controller)
SAA7158WP Back END IC (BENDIC)
SAA4995WP PANorama IC (PANIC)
SAA4970T ECOnomical video processing Back END IC

(ECOBENDIC)
TMS4C2970/71 (serial field memories)
TDA8755/8753A (A/D converter 4 : 1 : 1 format)
83C652/54 type of microcontroller.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL PARAMETER MIN. MAX. UNIT

V

DDD

digital supply voltage 4.5 5.5 V

T

amb

operating ambient temperature 0 70 °C

TYPE

NUMBER

PACKAGE

NAME DESCRIPTION VERSION

SAA4990H QFP80 plastic quad flat package; 80 leads (lead length 1.95 mm); body 14 × 20 × 2.8 mm SOT318-2

1996 Oct 25 3

Philips Semiconductors Preliminary specification

Progressive scan-Zoom and Noise

reduction IC (PROZONIC)

SAA4990H

BLOCK DIAGRAM

d

book, full pagewidth

MGE024

REFORMATTER

REFORMATTER

FORMATTER

CONTROL BLOCK

SNCL, SNDA,

SNRST

CK RE, WEVD, HD

FORMATTER

NOISE

REDUCTION

NOISE

REDUCTION

LINE

MEMORY 1

LINE

MEMORY 2

MIXER

LINE

MEMORY 3

MIXER

LINE

MEMORY 1

LINE

MEMORY 2

MEDIAN

FILTER

LINE

MEMORY 3

MIXER

MOVIE

PHASE

DETECTOR

MICROPROCESSOR

INTERFACE

(SNERT)

UV1

UV2

Y1
Y2

4

4

3

RE1
RE2
WE2

12

YUV

D

12

12

12

YUV

A

YUV

B

YUV

C

8

84

8

8

3 2 2

SAA4990H

Fig.1 Block diagram.

1996 Oct 25 4

Philips Semiconductors Preliminary specification

Progressive scan-Zoom and Noise
reduction IC (PROZONIC)

SAA4990H

PINNING

SYMBOL PIN TYPE DESCRIPTION

TEST1/AP 1 input action pin for testing, to be connected to V

SS

TEST2/SP 2 input shift pin for testing, to be connected to V

SS

RE1 3 output read enable to FM1
V

SS1

4 ground ground 1

V

DD1

5 supply supply voltage 1

YUV

C7

6 output Y bit 7 to FM2

YUV

C6

7 output Y bit 6 to FM2

YUV

C5

8 output Y bit 5 to FM2

YUV

C4

9 output Y bit 4 to FM2

YUV

C3

10 output Y bit 3 to FM2

V

SS2

11 ground ground 2

V

DD2

12 supply supply voltage 2

YUV

C2

13 output Y bit 2 to FM2

YUV

C1

14 output Y bit 1 to FM2

YUV

C0

15 output Y bit 0 to FM2

YUV

C11

16 output UV bit 3 to FM2

YUV

C10

17 output UV bit 2 to FM2

YUV

C9

18 output UV bit 1 to FM2

YUV

C8

19 output UV bit 0 to FM2
CK 20 input master clock, nominal 27 or 32 MHz
V

SS3

21 ground ground 3
V

DD3

22 supply supply voltage 3
WE2 23 output write enable to FM2
RE2 24 output read enable to FM2
YUV

B8

25 input UV bit 0 from FM2
YUV

B9

26 input UV bit 1 from FM2
YUV

B10

27 input UV bit 2 from FM2
YUV

B11

28 input UV bit 3 from FM2
YUV

B0

29 input Y bit 0 from FM2
YUV

B1

30 input Y bit 1 from FM2
YUV

B2

31 input Y bit 2 from FM2
YUV

B3

32 input Y bit 3 from FM2
V

DD4

33 supply supply voltage 4
V

SS4

34 ground ground 4
YUV

B4

35 input Y bit 4 from FM2
YUV

B5

36 input Y bit 5 from FM2
YUV

B6

37 input Y bit 6 from FM2
YUV

B7

38 input Y bit 7 from FM2
RE 39 input master read enable
VD 40 input field frequent reset, vertical display

1996 Oct 25 5

Philips Semiconductors Preliminary specification

Progressive scan-Zoom and Noise
reduction IC (PROZONIC)

SAA4990H

HD 41 input horizontal reference signal
YUV

D8

42 output UV bit 0
YUV

D9

43 output UV bit 1
YUV

D10

44 output UV bit 2
V

DD5

45 supply supply voltage 5
V

SS5

46 ground ground 5
YUV

D11

47 output UV bit 3
YUV

D0

48 output Y bit 0
YUV

D1

49 output Y bit 1
YUV

D2

50 output Y bit 2
V

DD6

51 supply supply voltage 6
V

SS6

52 ground ground 6
YUV

D3

53 output Y bit 3
YUV

D4

54 output Y bit 4
YUV

D5

55 output Y bit 5
YUV

D6

56 output Y bit 6
YUV

D7

57 output Y bit 7
V

DD7

58 supply supply voltage 7
V

SS7

59 ground ground 7
SNRST 60 input field frequent reset from microcontroller; reset for SNERT interface
SNDA 61 I/O data for SNERT interface
SNCL 62 input clock for SNERT interface
AUX 63 output spare output from line-sequencer
H

O

64 output output hold to e.g. LC display
n.c. 65 − not connected
n.c. 66 − not connected
YUV

A7

67 input Y bit 7 from FM1
YUV

A6

68 input Y bit 6 from FM1
YUV

A5

69 input Y bit 5 from FM1
YUV

A4

70 input Y bit 4 from FM1
YUV

A3

71 input Y bit 3 from FM1
YUV

A2

72 input Y bit 2 from FM1
V

SS8

73 ground ground 8
V

DD8

74 supply supply voltage 8
YUV

A1

75 input Y bit 1 from FM1
YUV

A0

76 input Y bit 0 from FM1
YUV

A11

77 input UV bit 3 from FM1
YUV

A10

78 input UV bit 2 from FM1
YUV

A9

79 input UV bit 1 from FM1
YUV

A8

80 input UV bit 0 from FM1

SYMBOL PIN TYPE DESCRIPTION

1996 Oct 25 6

Philips Semiconductors Preliminary specification

Progressive scan-Zoom and Noise
reduction IC (PROZONIC)

SAA4990H

Fig.2 Pin configuration.

handbook, full pagewidth

SAA4990H

MGE023

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20

60
59
58
57
56

64
63
62
61

55
54
53
52
51
50
49
48
47
46
45
44
43
42
41

21
22
23
24

TEST1/AP
TEST2/SP

RE1

V

SS1

V

DD1

YUV

C7

YUV

C6

YUV

C5

YUV

C4

YUV

C3

V

SS2

V

DD2

YUV

C2

YUV

C1

YUV

C0

YUV

C11

YUV

C10

YUV

C9

YUV

C8

V

SS3

V

DD3

CK

WE2

RE2

YUVB8YUV

B9

YUV

B10

YUV

B11

YUVB0YUVB1YUVB2YUV

B3

V

DD4

V

SS4

YUVB4YUVB5YUVB6YUV

B7

RE

VD

YUVA8YUVA9YUV

A10

YUV

A11

YUVA0YUVA1V

DD8VSS8

YUVA2YUVA3YUVA4YUVA5YUVA6YUVA7n.c.

n.c.

H

O

AUX
SNCL
SNDA
SNRST
V

SS7

V

DD7

YUV

D7

YUV

D6

YUV

D5

YUV

D4

YUV

D3

V

SS6

V

DD6

YUV

D2

YUV

D1

YUV

D0

YUV

D11

V

SS5

V

DD5

YUV

D10

YUV

D9

YUV

D8

HD

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

1996 Oct 25 7

Philips Semiconductors Preliminary specification

Progressive scan-Zoom and Noise
reduction IC (PROZONIC)

SAA4990H

FUNCTIONAL DESCRIPTION
Field rate up-conversion with line flicker reduction

The line flicker reduction in conjunction with field rate
up-conversion is performed by generating a 50 Hz
interlace on the 100 Hz field rate display. Median filtering
supplies the data for the interlaced output fields.

D

EFINITIONS

Framel: l is the number of an input/output frame
temporarily combinating an A and B field.

: x is the field raster where A means an odd field and

B means an even field.
Frame

l, k

: l is the number of an output frame temporarily
combinating an origin/interpolated A and B field;
k indicates the origin input field with
k = 1: odd input field and raster A
k = 2: even input field and raster B within framel.

: n, m = lines of field

n, m

are interpolated by

2 lines of field

n

and 1 line of fieldm using the median filter
(see Fig.3); x is the field raster where A means an odd field
and B means an even field.

Field

n

x

Field

n, m

x

Fig.3 Generation of (median filter).field

n, m

B

handbook, halfpage

MGE026

t

y

frame

l, k = 1

field

A

n

field

B

m

frame

l, k = 2

field

B

n,m

field

A

m,n

Fig.4 Scan rate up-conversion.

handbook, full pagewidth

MGE027

input
1fH, 1f

v

output
2fH, 2f

v

frame

1, 1

frame

1, 2

frame

2, 1

field

A

4, 3

field

B

3, 4

field

A

3

field

A

3

field

B

2

field

B

2

field

A

2, 1

field

B

1, 2

field

A

1

field

A

1

field

B

4

field

B

4

frame

2, 2

frame

1

median

median

frame

2

median

median

1996 Oct 25 8

Philips Semiconductors Preliminary specification

Progressive scan-Zoom and Noise
reduction IC (PROZONIC)

SAA4990H

Progressive scan

Progressive scan conversion produces a double number
of lines per field on the output. The field frequency is not
changed, while the line frequency is doubled.

Processing for progressive scan is different for two
successive output fields, e.g. the first output field has a
median operation on the odd lines, while the second has
the median operation on the even lines.

NON-INTERLACE MODE
With non-interlaced progressive scan output, line flicker is

removed because interlace is removed.

I

NTERLACE MODE

With interlaced progressive scan the output line structure
and line flicker is less visible (projection TV).

P

ROGRESSIVE SCAN CONVERSION

Fig.5 Progressive scan conversion.

handbook, full pagewidth

MGE028

output
1fH, 1f

v

output
2fH, 1f

v

frame

1, 1

frame

1, 2

frame

2, 1

frame

2, 2

frame

1, 1

frame

1, 2

frame

2, 1

frame

2, 2

frame

1

median

a. Non-interlaced output; (625/50/1:1) or (525/60/1:1):

b. Interlaced output; (1250/50/2:1) or (1050/60/2:1):

median

frame

2

frame

1

frame

2

median

median

field

A

1

field

A

3

field

A

5

field

B

2

field

B

4

field

B

4

field

B

3, 4

field

A

3

field

A

2,3

field

B

2

field

B

1, 2

field

A

1

field

A

1,1

field

A

2,1

field

B

1,2

field

B

2,2

field

A

4,5

1996 Oct 25 9

Philips Semiconductors Preliminary specification

Progressive scan-Zoom and Noise
reduction IC (PROZONIC)

SAA4990H

Noise and cross-colour reduction

The noise reduction is field recursive with an average ratio
between fresh and over previous fields averaged
luminance and chrominance.

Two operating modes can be used in principal: the fixed
and the adaptive mode (see Table 6).

In the fixed mode, the averaging produces a constant
linear combination of the inputs. Except for k = 1, the fixed
mode should not be used for normal operation, because of
its smearing effects.

In the adaptive mode, the averaging ratio switches softly
on the basis of absolute differences in luminance among
the inputs. When the absolute difference is low, only a
small part of the fresh data will be added. When the
difference is high, much of the fresh data will be taken.
This occurs in either the situation of movement or where a
significant vertical contrast is seen.

To latter remark, note that recursion is done over a field,
and the pixel positions one field apart always have a
vertical offset of one frame line. So averaging is not only
done in the dimension of time but also in the vertical
direction. Therefore averaging vertically on e.g. a vertical
black to white edge would provide a grey result if this was
not adapted for.

The averaging in chrominance is slaved to the luminance
averaging. This implies that differences in the
chrominance are not taken into account for the k-factor
setting.

The noise reduction scheme effectively decreases both
noise and cross-colour patterns.

The cross-colour pattern does not produce an increase of
the measured luminance difference, therefore this pattern
will be averaged over many fields.

Fig.6 Noise reduction scheme.

(1) Y

out=YA

×k+YB×(1 − k).
(2) see Table 9.
(3) see Fig.11.

handbook, full pagewidth

MGE029

FIELD

MEMORY

TF2TF1

FILTER LIMITER FILTER MULTIPLIER

(2)

k-CURVE

(3)

Y

out

(1)

Y

A

Y

B

k