Embedded Software Engineer

12/2015 – 4/2016

This project involved developing cloud DVR system that executed on IP Set Top Box. Client wants to add one more service known as DVR to the end user existing IP STB. This solution includes user interaction, so that user can select programs from EPG to be recorded in his account. Once user’s content recorded
Over the cloud, then user can view those contents by using set top box device, on laptop or PC by using web browser or mobile devices.
My responsibilities: - Design and development of complete record pipeline which includes below modules.
1) Record session manager
2) Transport stream chunker
3) Storage purge manager
4) Upload session manager.
Record session manager is responsible for creating record sessions and taking input feed from socket and provides this data to transport stream chunker module. TS chunker is responsible to break these continuous AV data stream to various chunks on flash storage memory and upload session manager is responsible to upload these chunks to cloud simultaneously.
Once chunks has been uploaded to cloud, in parallel Storage purge manager is responsible to purge these chunks from the storage. So that adequate memory always be available for new contents.

Embedded Linux, Embedded Systems, C++

1/2015 – 12/2015

The project is to design and developed IP Set top Box.
On boot IP STB connects with backend and display the live channels on the Tv Screen.
Responsible for Design and development of Transport Stream parsing that communicates with video module and display data to HDMI interface.
Design and developed Play and pause TV.
Develop network PVR.
Tag favourites programs.

Embedded Linux, Embedded Systems

12/2011 – 12/2014

Bluetooth Low energy Protocol Stack
Skills Embedded C programming, Bluetooth classic and low energy , PTS dongle.
This project involved developed of Bluetooth protocol stack and automation test framework, it majorly includes.
Design and development of Bluetooth Low energy protocol stack.
Design and devloped Bluetooth classic profiles.
Developed SDP, SPP, BIP profiles.
Design and Development of GAP Profile.
Design and Development of Various GATT services and profiles that communicates with L2CAP, HCI and BT radio and sends the information to other Bluetooth device.
Design and developed automation test framework that useful for automated testing of gatt profiles and services with SIG based PTS dongle.
Developed below GATT services and developed their corresponding profiles also.
• Alert Notification Service
• Battery Service
• Body Composition Service
• Blood Pressure Service
• Continuous Glucose Monitoring Service
• Cycling Power Service
• Cycling Speed and cadence service
• Current Time Service
• Glucose Service
• Heart Rate Service
• Health Thermometer Service
• Immediate Alert Service.
• Link Loss Service
• Location and Navigation Service
• Next DST Change Service
• Object Transfer Service
• Phone Alert Status Service
• Running Speed and Cadence service
• Reference Time Update Service
• Scan Parameter Service
• Tx Power Service
• Weight Scale Service

Embedded Linux, Embedded Systems

12/2009 – 1/2012

Se top Box,
Development of IPTV Middleware using Linux and QT Framework

Embedded Linux, Qt (Software)

8/2006 – 12/2009

SET TOP BOX
Design and developed Cable and IP Set top Box embedded software.
Developed all software stack start from bootrloader, Firmware, device driver, Middleware layer.
Developed for Embedded Linux and Embedded Windows CE OS.

Development of device driver (video and image) for STB based on CX2427 chipset.
Display (Graphics) Device Driver development on Windows CE 6.0 for Set Top Box.
Good exposure and worked with various protocol like MPEG2 TS, RTP, RTCP, UDP, TCP, HLS.
Good knowledge of Multimedia Standards (MPEG/DVB) and STB/DTV domain.
Good knowledge of various IPTV Features like VOD, PVR, Pause and Live TV, Trick Modes, Catch up TV, Reminder etc.
Good exposure to open source tool like FFmpeg and worked with various IPC mechanism in user space as well as in kernel space.

Embedded Linux, Embedded Systems, RTP (Real-Time Transport Protocol)