Electronics Technology


Cellphone has built-in projector

5 October 2005 Electronics Technology

Engineers at Siemens Communications have developed a laboratory model of a cellphone with an integrated projector. They demonstrated the device at CeBIT 2005 in Hanover. The unit's keypad or display can be projected onto a surface using the phone's swivel handle, where the projector unit with a powerful laser diode is mounted. Depending on how the swivel handle is turned, the image can be projected onto the housing, a flat surface or a wall, so the system can be used for presentations to small groups.

The device works in conjunction with an electronic pen that can be used to write on the virtual keypad and also serves as a Bluetooth headset with a built-in microphone and speaker. The researchers used a mix of ultrasound and infrared to register the pen's movements. The pen point continuously sends infrared flashes to a sensor in the phone's housing, forming the basis for the starting point of subsequent measurements. The point also emits ultrasound signals that are registered at two spots in the housing. Special software then determines the pen's exact position based on the time difference between the two signals.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Stable perovskite LEDs one step closer
25 March 2020 , Electronics Technology
Researchers at Sweden’s Linköping University, working with colleagues in Great Britain, China and the Czech Republic, have developed a perovskite light-emitting diode (LED) with both high efficiency and ...

Read more...
Infineon works with Qualcomm for 3D authentication
25 March 2020 , Electronics Technology
Infineon Technologies has collaborated with Qualcomm Technologies to develop a reference design for 3D authentication based on the Qualcomm Snapdragon 865 mobile platform. Infineon is thus extending its ...

Read more...
Online training: Battery Safety and Protection Overview
23 October 2019 , Electronics Technology, Multimedia, Videos
So many of the portable devices, electronic equipment, and tools we use every day are powered with lithium-ion battery systems. But one challenge for engineers who design these lithium-ion-powered products ...

Read more...
Using Wi-Fi to detect dangerous concealed objects
15 August 2018 , Electronics Technology
American university researchers have come up with a way of using Wi-Fi signals to detect weapons, bombs and explosive chemicals concealed in bags, backpacks or other luggage. The collaborative, peer-reviewed ...

Read more...
Wits researchers make carbon nanotube discovery
13 June 2018 , Editor's Choice, Electronics Technology
Researchers at the University of the Witwatersrand (Wits) have found ways to control the spin transport in networks of the smallest electrical conductor known to man.

Read more...
Evolution of home technology from connected to proactive
16 May 2018, Molex-Connector & Interconnect Div. , Electronics Technology
The idea of ‘home’ has evolved greatly over the millennia. Over the last decades, technology has transformed homes into hubs of functionality – centres of entertainment, environmental management, work, ...

Read more...
Products of the Year 2017
15 November 2017 , Electronics Technology
Tiny Bluetooth low energy module    Xilinx all programmable RFSoCs    PSoC 6 microcontrollers for IoT    PolarFire FPGAs from Microsemi    LTE Cat M1/NB1 multi mode module    Low-profile 2,4 GHz antenna    Multi-pixel ...

Read more...
Wits researchers demonstrate quantum teleportation of light
15 November 2017 , News, Electronics Technology
Quantum communication over long distances is seen as the future of information security and has been demonstrated in free space and fibre with two-dimensional states, recently over distances exceeding ...

Read more...
Tiny Bluetooth low energy module
15 November 2017, NuVision Electronics , Electronics Technology
Silicon Labs introduced what was the industry’s smallest Bluetooth low energy system-in-package (SiP) module with a built-in chip antenna. Available in a tiny 6,5 x 6,5 mm package, the BGM12x Blue Gecko ...

Read more...
Xilinx all programmable RFSoCs
15 November 2017, Avnet South Africa , Electronics Technology
Xilinx announced delivery of its Zynq UltraScale+ RFSoC family, an architecture integrating the RF signal chain into a system-on-chip (SoC) for 5G wireless, cable Remote-PHY and radar. Based on 16 nm ...

Read more...