Kiran, LiveCycle has been renamed "AEM Forms" so you might try searching for that instead.
AEM Forms is server-based software just as LiveCycle was before it, and it is fully capable of converting numerous document formats to PDF and performing OCR on any images being converted at the same time, leaving you with a searchable PDF file no matter the source.
There's a big page here that will tell you everything you might need to know about PDF Generator and how to use it, including how to switch on the OCR functionality. It's just an option you enable on image conversions, so it's simple enough to use.
As you will see, you can call PDF Generator using a variety of methods, including Java API's, Web Services, Watched Folders, and more. AEM is very flexible in how you might call it, and it can also do much more than convert things to PDF.
I hope this helps.