Driving the Digital Lifestyle
PM-1075
Precision Digital Modulator
Imaging
Software
Processors
Quatro SOCs
Solutions
Zoran Corporation
1390 Kifer Road
Sunnyvale, CA 94086-5305
www.zoran.com
Product Brief
The PM-1075 Precision Digital Modulator provides state-of-the-art laser modulation for high-quality, high-speed color and
monochrome laser printer systems, multifunction peripherals (MFPs) and digital copiers.
Benefits
Key Features
• Precision modulator for laser printers/copiers and MFPs
• 10-bit pulse width precision; 1024 linearized width choices
• True 7-bit pulse position precision; up to 128 position choices
• Automatic start-of-scan-line synchronization to within 1/256th
of a pixel
• Adjustable, precision video pulse placement for superior edge
photo reproduction and enhancement
• Internal look-up tables (LUT) compensate for operating
characteristics of the printer device
• Proprietary pulse position and pulse width modulation technology
• Internal beam–detect synchronization eliminates line-to-line jitter
• All-digital design–no alignment or calibration required
• Margin control
• Supports five data modes
• Seamless pixel joining–zero dead space
• Supports any engine resolution
• No modulator calibration required–inherently linear, all-digital
design
• 8-bit parallel or 2-wire serial CPU Interface
• Supports a "No CPU" mode
• 1x Clock = Data Clock = Video Rate
• Maximum video rate: 75 MHz
Description
PM-1075 Sets a New Standard
Beam Detect (BD) Synchronization
The PM-1075 is unique in two ways: 1) it modulates both pulse width
and pulse position, and 2) it can operate with or without a CPU
enabling easy integration into an analog modulator replacement
environment or be fully utilized with its expanded feature set.
Proprietary core technologies in sub-pixel modulation give virtually
unlimited flexibility in the driving of laser beams to achieve the
highest quality color and monochrome text, line-art and photographic
images. The sub-pixel modulator precisely controls laser beam size
and position, enabling very high resolutions. The high speed and low
cost of the PM-1075 make it ideal for use across product lines, with
no compromise in performance.
Start-of-scan (Line Sync) is automatically synchronized to the print
engine beam detect signal (BD). The modulator uses BD to phase
adjust the video cell boundaries to the start of each line within
1/256th of a video clock period, eliminating line-to-line jitter.
Data Modes and Look-up Tables
The PM-1075 supports up to 12 input bits to describe the pulse width
and position within each clock period. Multiple data format options
and 2 internal look-up tables (LUT) provide exceptional user
flexibility. In the default mode, the LUTs are bypassed, with inputs
defined as 10 bits of width information and 2 bits selecting the
position (left, center, right, or reversed center). In this mode no CPU
is required to operate the chip.
Precision Video Pulse Placement
The PM-1075 Precision Digital Modulator allows designers to adjust
the pulse width, position and polarity in each pixel cell of the image,
enabling superior edge and photo reproduction and enhancement.
The PM-1075 controls video pulse width from 0-100% of a pixel clock
period with 10-bit precision. In a high-precision mode, 1024 pulse
widths can be obtained when the calibration look-up table (LUT) is
bypassed. The precision modulator can position a pulse with 7-bit
precision within a pixel period. In addition the polarity of any pulse
can be inverted.
The PM-1075 supports multiple data mode configurations (see chart
on back page). In these modes, input data is translated through the
PM-1075's internal LUTs, which translate incoming data to width and
position values that optimize video output to the specific engine/toner
system and/or user-desired operating characteristics. The Pulse
Width LUT has 256 10-bit values translating up to 8 bits of pulse
width into 10 bits. The Pulse Position LUT has 256 8-bit values which
describe the pulse position (7 bits) and polarity (1 bit) based on up to
8 position inputs. Naturally, the PM-1075 will support fewer bits in
any mode (i.e. 6/2-bit data in the 8/4-bit mode). The LUTs allow the
maximum resolution of the modulator to be used with minimal data
based on the system requirements.
01/06-MMCP
Imaging-PM-1075-PB-1.2
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