Amitabh Bachchan at 68

The celebrations for his birthday began almost a month in advance with his big win at the National Awards. But Amitabh Bachchan would like to spend his 68th birthday today (October 11) quietly in his den even as he mulls new moves like copyrighting his voice.

"I am going to be at home… I'll be spending it with family," Amitabh, who has done close to 200 films and won four National Awards, said.

The star's son Abhishek and daughter-in-law Aishwarya are in South Korea but will be back in time for his birthday.

Responding to rumours that he would host a special party on his birthday, Big B said: "That whole news about some kind of celebration is wrongly reported."

The fourth season of the quiz show 'Kaun Banega Crorepati' will be going on air on Sony TV coinciding with his birthday.

Buzz was that the channel has arranged for a birthday bash for him at the JW Marriott hotel in Mumbai.

"I am not sure what the channel wants me to do. They want me to cut a cake or something like that because they just want to be a part of my birthday so that's fine. I may go out and cut a cake or something like that.

"But generally I remain at home, I meet the family, be with them and yes if there are people who want to come and see me, then I go out and meet them," the star revealed.

Asked how different life would be at 68, he said: "Well, every year is different. What one can one say - I'll be completing 68 and stepping into 69. It's been 41 years in the industry. It's a long time."

That's enough material for an autobiography and his regular blog updates prove he is a prolific writer but Amitabh says he won't ever pen a memoir.

"No, No, No. I am incapable of writing a biography. Blogging is something I do casually and now I do Twitter and the voice blog but in any case I don't think there is anything worthwhile in my life to be written about.

"I'd rather live with my father's (legendary poet Harivansh Rai Bachchan) biography which I think is really one of the best that I've seen. I'd rather live with that than write my own," he replied.

And he also plans to copyright his famous voice. "Voice mimics used to use voices and commercialise it. I think there are laws within the country perhaps inspired by some laws in the West where copyrighting and getting your attributes registered (is in practice) so that they cannot misuse it. I am in the process of doing that," he said.