Mostly none:
The Panasonic TH-42PWD5UY replaced the TH-42PWD4UY. The following are the model differences, apart from the differences the TH-42PWD5UY is exactly the same as the TH-42PWD4UY model.
MODEL DIFFERENCES:
TH-42PWD4UY (4) vs. TH-42PWD5UY (5)
The (5) replaces the (4) in September 2002 as the new model. There are very few differences to note as follows: For review purposes everything is still accurate. The differences are minor and apply to a commercial display setting application.
1. Picture quality:
a) Real Gamma Correction Circuitry - improved gradation in low light area (1024 gradation / 2048 wiht DVI)
b) NEW asymmetircal cel structure / NEW front glass filter / NEW phosphers - There is no objective parameters to show the improvemnt, but these improved the level of color reporduction.
2. Features:
a) Automatic contrast tracking system - enables automatic contrast adjustment according to the room lighting conditions
b) Remote ID - enables individual remote control when multiple plasmas are installed side by side
c) New optional terminal board - RGB active through board (some other expansion board may be introduced later)
That's it. Same pixel resolution. Same converter/scalar. Same contrast ratio. Basically, the same unit at a lower price. The TH-42PWD5UY sports the highest brightness level and contrast ratio of 3000:1 available in a plasma display.
The TH-42PWD5UY incorporates advanced digital processing technology including a newly developed Real Black Drive System, Adaptive Brightness Intensifier, False-Edge Predictor circuit, and UXGA/HDTV compatibility.
It features an industry-leading contrast ratio and peak panel brightness of 650 cd/m2 to produce realistic images in vibrant, natural colors with a wide 16:9 aspect ratio, 160-degree viewing angle. The TH-42PWD5UY features an ultra-thin yet ultra-sturdy 3.5" deep body. It weighs only 65 lbs and offers a thinner surround area, effectively increasing the overall screen area.
Responding to plasma display needs in the computer monitoring arena, the TH-42PWD5UY offers expanded computer signal compatibility to display VGA, SVGA, XGA, SXGA, and UXGA resolutions and an expanded range of horizontal and vertical scanning rates (fH: 15:6 - 110 kHz; fV: 48-120 Hz). This wider range allows the TH-42PWD5UYto display dynamic, updateable dynamic signage applications when driven from a computer.
Equipped with component video (YPbPr) inputs, it enables viewing of DTV broadcasts in either scaled 1080i, or 480i. In addition, a 3-Dimensional Progressive Scan function elegantly converts interlace signals (1080i and 480i) into progressive signals for optimal viewing. 720p and 480p progressive signals remain in their native scan format and are also fed via the component video inputs.
A 'Real Black Drive System' dramatically lowers black levels, resulting in an extraordinary 3000:1 contrast ratio, four times higher than prior Panasonic plasmas. The 16:9 unit produces virtually distortion-free images with up to 16.77 million colors and produces 1,024 shades of gray - twice that of previous models - for cleaner details, especially in low-light images.
The unique 'Advanced Plasma Adaptive Brightness Intensifier' (AI) increases the discharge cycle for dark scenes , in turn doubling brightness precision over prior models. The result is a smoother blend of graduating brightness levels, both in luminance and chrominance.
The TH-42PWD5UY features an unprecedented brightness specification of 650 cd/m2 - a 70% increase in peak brightness compared with non-AI equipped plasma sets. Additionally, its unique 'Asymmetrical Cell Structure' panel serves to achieve both high brightness and high color temperature, resulting in a significantly improved light-emitting balance of the three primary colors (red, green, blue).
To reduce noise in fast-moving images, the display features a more precise False-Edge Predictor circuit. Essentially this is an adaptive motion sensing circuit that senses movement and applies a specific filter that removes noise from picture elements while maintaining resolution. Consuming only 280 Watts of power, it offers the lowest power consumption of any available 42" plasma. This means less heat and no fans.
For system installation and display, a range of optional accessories are available and include detachable speakers; wall-hanging and ceiling-hanging brackets; and fixed floor, mobile floor and pedestal stands.
The TH-42PWD5UY accepts most international video signals, including NTSC, PAL, SECAM and PAL-60. The on-screen menu offers a selection of seven languages with an improved menu structure. Composite and component video inputs appear on BNC connections while PC inputs on a standard 15-pin connector. An S-video input is available on a standard 4-pin din connector.
DISPLAY
Screen Size 42" (106 cm) diagonal
Screen Aspect 16:9 Wide
Number of Pixels 408,960 (852 x 480) pixels
Pixel Pitch 1.08 mm
Displayable Colors 16.77 million colors
Contrast 3000:1
Brightness (panel) 650 cd/m2
Color System PAL/SECAM/NTSC/PAL 60 Hz
Audio Output 16 Watts (8 Watts x 2)
On-Screen Display US English/UK English/Japanese/Spanish/French/
German/ Italian
Screen Coating AR (Anti-Reflection) Coating
TERMINALS
Video Composite Input BNC coaxial x 1, 1 Vp-p/75 ohms (RCA adapter supplied)
S-Video Input 4-pin S terminal x 1, Y: 1 Vp-p/75 ohms, C: 0.286 Vp-p/75 ohms
Audio Input (for Video) RCA phono type connectors (L,R) (1 set)
RGB Input (PC) D-sub 15-pin x 1 (VGA display & SVGA, XGA, SXGA, UXGA compressed display)
fH: 15.6 - 110 kHz; fV: 48- 120 Hz
Audio Input (for PC) M3 stereo plug
Component/R,G,B Input BNC coaxial x 5
, HD, VD Video: 0.7 Vp-p/75 ohms
Sync: TTL level/0.3 Vp-p (75 ohms)
H, V Separate Sync/Composite Sync
fH: 15.6 - 110 kHz; fV : 48- 120 Hz
Y: 1 Vp-p/75 ohms
PbPr : 0.7 Vp-p/75 ohms
fH: 15.75/31.5/33.7/45 kHz
Input RCA phono type connectors (L,R) (1 set)
Serial (RS232C) Mini D-Sub 9-pin
Tuner In D-Sub 26-pin
GENERAL
Power Supply 120 VAC, 50/60 Hz
Maximum Current 3.0 A
Power Consumption 280 Watts
Dimensions (W x H x D) 40.2" x 24" x 3.5" (1020 x 610 x 89 mm)
Weight 65 lbs. (29.5 kg)
Operating Temperature 34°F - 104°F (0°C - 40°C)
Operating Humidity 20% - 80%
EMI Regulations FCC Part 15 Class A Digital Equipment
Safety Regulations UL6500/C-UL (CAN/CSA-E65-94)
Carrying Handles Detachable (Supplied)