Pulnix TMC-6700 Series Manual de Instruções descarregar pdf (Página 10)

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Introduction

TMC-6700/1000 Series Progressive Scan CCD Digital Color Camera

The built-in Digital Signal Processor (DSP) is controlled via RS-232C communication for remotely

adjusting color matrix, white balance, gain, edge enhancement, and other functions.

• Progressive Scanning

The TMC-6700/1000 series uses a state-of-the-art progressive scanning interline transfer CCD,

which scans all lines sequentially from top to bottom at one frame rate (15Hz in TMC-1000, 60Hz

in TMC-6700). In comparison, conventional “TV-format” scanning captures every other horizontal

line (ODD and EVEN lines) at a 60Hz rate per field, completing the scanning with two fields (one

frame) at a 30Hz rate. Like a non-interlace computer screen, progressive scanning generates a crisp,

stable image without alternating lines and provides full vertical resolution. The interline transfer

architecture is essential in generating simultaneous shuttering, as compared with full-frame

architecture which requires mechanical shuttering or a strobe light to freeze the object motion.

• Progressive scan output in 24-bit LVDS Channel Link

™

Digital and RGB analog format

(TMC-1000 nd TMC-6700 base models only)

The digital output is 24-bit LVDS Channel Link output. Channel Link is a transmitter/receiver

chipset pair developed by National Semiconductor for high-speed data transmission. Originally

designed for flat-panel display technologies, Channel Link lends itself to digital video transmission

and has been adopted by PULNiX in their latest cameras. Visit PULNiX’s website at

www.pulnix.com for information on Channel Link-compatible frame grabbers.

Channel Link offers two main advantages:

- Smaller cables

A Channel Link transmitter converts 28 bits of data into four LVDS parallel data streams.

A transmit clock is transmitted with the data over a fifth line. So during every clock

cycle, 28 bits of data are transmitted over only 5 LVDS lines.

As an example, for a 24-bit RGB camera, at least 27 pairs of wires (data and timing) are

needed to transfer the data. The required cable, with 54 wires, would be bulky, heavy, and

expensive.

Using Channel Link technology, the same data can be transferred using only 11 conduc-

tors (4 data pairs, one clock pair, and a minimum of 1 ground). This provides an 80%

reduction in cable width, reducing the connector size and cost, as well as requirements

for shielding.

- Higher data rates

A Channel Link transmitter can send data rates up to 2.38GB/sec, (depending on the

transmitter) more than satisfying what is available with today’s camera technology and

offering compatibility with the solutions of the future.

• Camera Link Digital Output

Camera Link is a camera-to-frame grabber interface specification based on an implementation of

Channel Link technology. The Camera Link standard includes data transmission, hardware (cable

connectors), camera control, and asynchronous serial communications, all on a single cable.

• *Built-in YCrCb 4:4:4 and 4:2:2 converter

The TMC-6700/1000 series cameras can output three different digital video outputs: 24-bit RGB,

24-bit 4:4:4 YCrCb, and 16-bit 4:2:2 YCrCb.

• Full-frame electronic shutter, 1/15 sec. to 1/16,000 sec.

The substrate drain-type shutter mechanism provides a clear, crisp image without smearing.

Progressive scanning permits a full frame of image resolution (1008 lines TMC-1000; 484 lines

*. Channel Link is a trademark of National Semiconductor.

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