Thursday, June 03, 2010

Mitsubishi Electric Research Laboratories

MERL is the North American arm of the Corporate R&D of Mitsubishi. MERL conducts application-motivated basic research and advanced development in optimization, control and signal processing.

Mitsubishi Electric Research Laboratories

Mechatronics - Advanced control algorithms, system dynamics, modeling & performance analysis....

Digital Communications - High speed mobile communications, ubiquitous networking, reliable wireless...

Data Analytics - Predictive analytics (statistical machine learning, data analysis); decision analytics...

TR2003-35 Very Low-Cost Sensing and Communication Using Bidirectional LEDs

A novel microprocessor interface circuit is described which can alternately emit and detect light using only an LED, two digital I/O pins and a single current limiting resistor. This technique is first applied to create a smart illumination system that uses a single LED as both light source and sensor.

MERL - TR2003-35 Communication Using Bidirectional LED

Bidirectional communication with LEDs

These test boards use a simple protocol for data transfer which allows two unsynchronized devices to phase-lock to each other and exchange pulse-width- modulated data bidirectionally. A basic explanation of the protocol is that the two devices take turns flashing their LEDs at each other. A short flash indicates a 0 or SPACE state, and a long flash indicates a 1 or MARK state.

Blocks

80C51 Analog Analog-Design Analytical-Instrumentation Android Application-Notes-2 ASIC-Design ASIC-SOC-FPGA Bipolar-Transistors Capacitors Circuit-Archive Circuit-Design Circuit-Design-2 Communications Communications-Chips Component-Testing Computer-IC-Module Computer-Interfacing Control-Systems Design-Service Design-Service-2 Design-Service-3 Digital Discrete-Semiconductors DSP EDA EDA-2 EDA-3 EDA-4 EDA-5 Educational Educational-2 Electrical Electromechanical Embedded Embedded-2 Embedded-Applications Embedded-Systems-Tools Energy-Power Engineering-Services Engineering-Services-2 Engineering-Services-3 ESD-EMI-RFI Firmware Home-Automation Industrial-Automation IoT-WSN-M2M LED-Lighting Magazines Manufacturing-Services Materials-Nanotech Mechanical-3D-CAD Mechatronics Medical-Electronics MEMS Microcontroller Microelectronics Mixed Mixed-Semiconductor Mixed-Signal-Design Opamps Open-Hardware Optoelectronics Organizations-Associations Passive-Components PCB-Layout Photonics-Optics PIC Power-Devices Power-Electronics Power-Electronics-Design Process-Control Process-Control-2 Product-Safety Product-System-Design Projects Quality Reference Research-Institutes RF-Components RF-Design RF-Engineering-Services RF-Microwave RF-Semiconductor RF-Wireless-Networking Robotics Scientific-Software Semiconductors Sensors SMPS-Power-Supply Software-Code Spice-Simulation Standards Standards-2 Tech-Docs Tech-Media Technical-Computing Test-Measurement TM-Applications Training-Consulting Virtual-Instrumentation