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Bangalore, India

Tata Elxsi Limited is a subsidiary of the Tata Group and is headquartered in Bangalore. Tata Elxsi is listed on the Bombay Stock Exchange and the National Stock Exchange of India. It had a talent pool of over 3500 employees and has offices in Dubai, France, Germany, Japan, Malaysia, Singapore, South Africa, UAE, UK, and USA. It caters to various sectors including Automotive, Communications, Consumer products, Defense, Healthcare, Media & Entertainment, Semiconductor and Transportation. Wikipedia.

Khan J.,TATA Elxsi
SAE International Journal of Passenger Cars - Electronic and Electrical Systems | Year: 2015

Security access feature based on seed-key mechanism is widely used in automotive electronics, mainly for flashing ECU software, writing or reading specific parameter values and running diagnostic routines. There exist a number of techniques to decode the algorithm for key generation from a specific seed. Such techniques can put vehicle network at great risks due to an intruder flashing unauthorized version of ECU software, or changing internal parameters of ECU, or changing a VIN number. A lot more similar malicious attacks can be done by getting control over the ECUs. Attackers can exploit this vulnerability to alter the performance from the stock and affect the safety of the passengers. A novel and fool proof algorithm to protect the vehicle and ECU from such malicious attacks is explained in this paper. An advanced encryption technique is developed and tested in ECU to replace the current seed-key mechanisms for ECU security guarantying a secure operation of the vehicle. Algorithm is implemented in the presentation layer of the OSI model which would ensure that the encryption details are not available to users and the ECU can be electronically accessed only by intended individuals. Copyright © 2015 SAE International. Source

Khan J.,TATA Elxsi
2015 International Conference on Industrial Instrumentation and Control, ICIC 2015 | Year: 2015

This paper is proposing a novel approach for lossless compression of both gray scale and color images. This approach is exploiting the fact that neighboring pixel values of most of the real world images do not change drastically. A code book of 256 × 256 known at both the compressing and decompressing stations is used as reference for the proposed lossless compression algorithm where a compression ratio dependent on code book design concepts is realized. This code book design is considered in an innovative way so as to further minimize the compression ratio in multiple iterations. Two types of code book designs are discussed in the paper. Level of compression, compressed image and the code book identification number shall be send to the receiver who decompresses the image based on the level and code books available. This method is highly useful for the exact type of images when the code books are designed specifically for them. Simulation results are explained to show how compression ratio and compression speed are improved in both the present method as compared to conventional methods. © 2015 IEEE. Source

Khan J.,TATA Elxsi
Proceedings - 2015 IEEE International Conference on Computational Intelligence and Communication Technology, CICT 2015 | Year: 2015

This paper is a novel approach to design and launch an interstellar spacecraft and associated intelligent repeater modules for the ultimate purpose of detecting extraterrestrial intelligence and interstellar space study. Conventional interstellar space crafts like Voyager 1 and Voyager 2 have some common demerits known to the scientific community which shall be rectified in the proposed method thereby guaranteeing ideal infinite life time contact of the interstellar spacecraft with the base station. Intelligent repeater modules shall be designed for relaying the radio wave communication between interstellar spacecraft and base station. Intelligent repeater design, repeater deployment techniques, automatic repeater realignment, communication protocols, tracking methods, base station design techniques are reconsidered for a constant and coherent communication link. © 2015 IEEE. Source

Modern day vehicles have about 70 Electronic Control Units that are networked using CAN, LIN, MOST or K-Line protocols. All these protocols suffer from some common disadvantages like limited baud rate, limited bandwidth, limited networking length, complex software algorithms, high power consumption and queuing of messages. Wiring, ECU connectors and harness also become complex and bulky owing to the large number of ECUs. This paper proposes a new In-Vehicle network with a Single ECU for a Network (SEN). Rather than employing nearly 20 ECUs for each vehicle network (Body and Chassis), a single parent ECU shall control all the activities in that network. Wiring complexity shall be reduced by 40 % by reducing in the pin count of ECUs. This can be achieved by using interface modules for communication of ECUs with sensors and actuators. Proposed architecture employs cutting-edge technology which provides data rates that are 1000 times higher that of CAN while still maintaining real-time behavior of the network. Power consumption is drastically reduced due to simple, yet powerful software algorithms of SEN. Combination of several strategies is employed for making SEN a better nominee for future vehicle networks. Copyright © 2014 SAE International. Source

Unified Diagnostic Service and On Board Diagnostics require a client side device with necessary software to implement certain specific algorithms. This paper proposes a highly optimized and generic model based architecture to implement client side algorithms used in Unified Diagnostic Service systems and with On Board Diagnostics which can be reused for any hardware target. The proposed method can implement particular algorithms which include flow control, timing control, database parsing, logging of messages, diagnostic database parsing, security unlock, intuitive HMI layer, DTC display with textual information, frame control, multi network - multi ECU support, software flashing, physical-functional message handling, and interfacing for multiple hardware host devices. Re-usability of this model based product ensures that it can be ported to the diagnostic tool used by a work shop engineer or by a diagnostics validation engineer working at OEM or Tier 1suppliers. This means that this software is hardware independent. Scalability is ensured by designing the model in a modular way, thereby the accommodation of additional logic is made easy. The model also supports automated diagnostics implementation using automation scripts which can change model variable values in real time. The aim of this paper is to propose an efficient software architecture for the client side programming which is memory optimized, reusable and scalable. In this paper reusability refers to the ability of porting the same diagnostic client application software to different hardware targets. Copyright © 2016 SAE International. Source

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