Manuals / AOC / Car Audio and Video / Car Video System

AOC P/N : 41A50-144 Sync. Signal Support, Display Mode Support, Input Timing Measurement

Models: P/N : 41A50-144

1 82
Download 82 pages 57.45 Kb
Page 52
Image 52

2.3.2 Sync. Signal Support

The gmZAN1 chip supports digital separate sync (Hsync/Vsync), digital composite sync, and analog composite sync (also known as sync-on-green). All sync types are supported without external sync separation / extraction circuits.

Digital Composite Sync

The types of digital composite sync inputs supported are:

zOR/AND type: No Csync pulses toggling during the vertical sync period

zXOR type: Csync polarity changes during the vertical sync period

The gmZan1 provides enough sync status information for the firmware to detect the digital composite sync type.

Sync-On-Green (Analog Composite Sync)

The voltage level of the sync tip during the vertical sync period can be either –0.3V or 0V

2.3.3 Display Mode Support

A mode calculation utility (MODECALC.EXE) provided by Genesis Microchip may be run before compilation of the firmware to determine which input modes can be supported. Refer to firmware documents for more details.

2.4 Input Timing Measurement

As described in section 2.2.2 above, input data is sent from the analog-to-digital converter to the source timing generator (STG) block. The STG block defines a capture window (Figure5).

The input timing measurement block consists of the source timing measurement (STM) block and interrupt request (IRQ) controller. Input timing parameters are measured by the STM block and stored in registers. Some input conditions will generate an IRQ to an external micro-controller. The IRQ generating conditions are programmable.

2.4.1 Source Timing Measurement

When it receives the active CRT signal (R,G,B and Sync signals) the Source Timing Measurement unit begins measuring the horizontal and vertical timing of the incoming signal using the sync signals and TCLKi as a reference. Horizontal measurement occurs by measuring a minimum and a maximum value for each parameter to account for TCLKi sampling granularity. The measured value is updated every line. Vertical parameters are measured in terms of horizontal lines. The trailing edge of the Hsync input is used to check the polarity of the Vsync input.

The table below lists all the parameters that may be read in the source timing measurement (STM) registers of the gmZAN1.

Table 11. Input Timing Parameters Measured by the STM Block

Parameter

Unit

Updated at:

HSYNC Missing

N/A

Every 4096 TCLKs and every 80ms (2-bits)

VSYNC Missing

N/A

Every 80ms

HSYNC/VSYNC Timing Change

N/A

When the horizontal period delta or the vertical

 

 

period delta to the previous line / frame exceeds the

 

 

threshold value (programmable).

HSYNC Polarity

Positive/Negative

After register read

VSYNC Polarity

Positive/Negative

Every frame

Horizontal Period Min/Max

TCLKs and SCLKs

After register read

HSYNC High Period Min/Max

TCLKs

After register read

Vertical Period

Lines

Every frame

VSYNC High Period

Lines

Every frame

Horizontal Display Start

SCLKs

Every frame

Horizontal Display End

SCLKs

Every frame

Vertical Display Start

Lines

Every frame

Vertical Display End

Lines

Every frame

Interlaced Input Detect

N/A

Every frame

CRC Data/Line Data

N/A

Every frame

CSYNC Detect

N/A

Every 80ms

51

Page 51 Page 53
Page 52
Image 52
AOC P/N : 41A50-144 Sync. Signal Support, Display Mode Support, Input Timing Measurement, Source Timing Measurement
Page 51 Page 53

P/N : 41A50-144 specifications

The AOC P/N: 41A50-144 is a versatile and high-performing monitor that caters to both professional and casual users. With its sleek design and array of features, this model embodies the epitome of modern display technology.

One of the standout characteristics of the AOC 41A50-144 is its impressive display resolution. Equipped with a 1920 x 1080 pixels Full HD panel, it delivers sharp, vibrant images and ensures that text and graphics appear crisp and clear. The monitor boasts a wide viewing angle that allows for consistent color reproduction, making it perfect for collaborative workspaces or multi-screen setups.

In terms of refresh rates, the AOC 41A50-144 supports a 144Hz refresh rate, catering exceptionally well to gamers and media consumers who seek responsive performance. This high refresh rate reduces motion blur, providing a smoother experience during fast-paced gaming sessions or action-packed videos. Coupled with a 1ms response time, this monitor minimizes ghosting and lag, delivering a seamless visual experience.

The monitor utilizes advanced technologies to enhance the viewing experience further. One notable feature is AMD FreeSync support, which synchronizes the monitor's refresh rate with the GPU's frame rate, effectively eliminating screen tearing and stuttering during gameplay. This leads to a more immersive experience and ultimately gives gamers a competitive edge.

Another critical aspect of the AOC 41A50-144 is its connectivity options. It comes with multiple ports including HDMI, DisplayPort, and VGA, making it compatible with a wide range of devices. This versatility ensures that users can easily connect their computers, gaming consoles, or multimedia players without any hassle.

The AOC 41A50-144 also places importance on user comfort. It incorporates features like flicker-free technology and a low blue light mode to reduce eye strain during extended use. This focus on ergonomics allows for a more enjoyable viewing experience, regardless of the tasks at hand.

Overall, the AOC P/N: 41A50-144 combines high-performance, advanced technologies, and user-centered design. Whether for gaming, professional tasks, or entertainment purposes, this monitor stands out as a reliable and efficient solution that meets the demands of various users. Its features and specifications make it a compelling choice for anyone looking to enhance their display setup.