Projected capacitive touchscreens
10 September 2003
Electronics Technology
Surveillance
Zytronic is a specialist manufacturer of touchscreens, optical filters to enhance the performance of electronic displays, and transparent composites. The company's Zytouch touchscreen or touch sensor is based on projected capacitive technology that allows the device to sense through a protective screen in front of the display.
The touchscreen comprises a laminated glass sensor, which encompasses the active medium, and a control card which connects to the communications port of the computer. The electronic controls effectively divide the screen into pixel-sized sensing cells, using microfine wires that are not visible on a powered display. These wires are connected to a controller board, and an oscillation frequency is established for each wire. Touching the glass causes a change in the frequency of the wires at that particular point, the position of which is calculated and identified by the controller.
Unlike other capacitive systems where the operator touches the actual conducting surface of the sensing panel, the active component of the Zytouch sensor can be embedded up to 25 mm from the touch surface ensuring long product life and stability.
The driver software allows the touchscreen to interface with the host computer's operating system by emulating the behaviour of a computer 'mouse' and translates taps on the touchscreen surface into mouse clicks.
The Zytouch touchscreen is proven to meet today's demanding requirements for ATMs, web phones, ticket machines, medical displays, industrial displays, pay-at-the-pump gas machines, and interactive kiosk systems. The touchscreen is durable, dependable, and can be hermetically sealed; its construction protects against damage caused by moisture, heat and even vandalism. Power requirements are typically 5 mA at 4 to 10 V, which is provided by an RS232 port, USB or an external source. Temperature range is -40 to +70°C, humidity of 0 to 90% - and unaffected by water droplets. Speed of response is 13 ms through 4 mm thick glass.
The touchscreen can be supplied with the options of anti-glare or anti-reflection coatings, thermal toughening or chemical strengthening and privacy or contrast enhancement filters.
Further reading:
2025 video surveillance market set for improved fortunes
News & Events Surveillance
Novaira Insights has unveiled its latest report, World Market for Video Surveillance Hardware and Software – 2025 Edition, forecasting a healthy growth rate of 8,1% until 2029, excluding China.
Read more...
Next generation of AI-powered video telematics
IoT & Automation Surveillance Transport (Industry)
Webfleet, Bridgestone’s fleet management solution in South Africa, has launched Webfleet Video 2.0, an AI-powered solution designed to enhance fleet safety, security, compliance with local regulations and operational efficiency through real-time video insights.
Read more...
Key design considerations for a control room
Leaderware
Editor's Choice Surveillance Training & Education
If you are designing or upgrading a control room, or even reviewing or auditing an existing control room, there are a number of design factors that one would need to consider.
Read more...
Advanced surveillance storage from ASBIS
Infrastructure Surveillance Products & Solutions
From a video storage solutions perspective, SkyHawk drives, designed for DVRs and NVRs, offer high capacity, optimised firmware, and a reliability workload rating of hundreds of terabytes per year.
Read more...
CCTV control room operator job description
Leaderware
Editor's Choice Surveillance Training & Education
Control room operators are still critical components of security operations and will remain so for the foreseeable future, despite the advances of AI, which serves as a vital enhancement to the human operator.
Read more...
Platform to access data and train AI models
Milestone Systems
AI & Data Analytics Surveillance
Milestone Systems has announced Project Hafnia to build services and democratise AI-model training with high-quality, compliant video data leveraging NVIDIA Cosmos Curator and AI model, fine-tuning microservices.
Read more...
AI means proactive surveillance
DeepAlert Technews Publishing SMART Security Solutions
AI & Data Analytics Surveillance
SMART Security Solutionsasked DeepAlert for some insight into how AI is transforming video surveillance, even to the extent of it being taught to protect the privacy of those in the cameras’ view.
Read more...
Camera Selection Guide 2025
Camera Selection Guide Surveillance
The Camera Selection Guide 2025 includes a range of IP, thermal and speciality cameras aimed at a broad range of surveillance functions.
Read more...
Vumacam highlights concerns with proposed Johannesburg CCTV by-laws
Vumacam
News & Events Surveillance
Vumacam has raised objections to critical provisions of the by-laws governing privately owned CCTV cameras with a view of public spaces in the city, which were promulgated on Friday, 28 February 2025.
Read more...
The need for integrated control room displays
Leaderware
Editor's Choice Surveillance Training & Education
Display walls provide a coordinated perspective that facilitates the ongoing feel for situations, assists in the coordination of resources to deal with the situation, and facilitates follow up by response personnel.
Read more...
printer friendly version