Section 468 of CRPC deals with – Bar to taking cognizance after lapse of the period of limitation
Except as otherwise provided elsewhere in this Code, no Court, shall take cognizance of an offence of the category specified in Sub-Section (2), after the expiry of the period of limitation.
The period of limitation shall be-
1.six months, if the offence is punishable with fine only;
2.one year, if the offence is punishable with imprisonment for a term not exceeding one year;
3.three years, if the offence is punishable with imprisonment for a term exceeding one year but not exceeding three years.
For the purposes of this section, the period of limitation, in relation to offences which may be tried together, shall be determined with reference to the offence which is punishable with the more severe punishment or, as the case may be, the most severe punishment.
Section 469 of CRPC deals with – Commencement of the period of limitation
The period of limitation, in relation to an offence, shall commence,
1. on the date of the offence; or
2. where the commission of the offence was not known to the person aggrieved by the offence or to any police officer, the first day on which such offence comes to the knowledge of such person or to any police officer, whichever is earlier; or
3. where it is not known by whom the offence was committed, the first day on which the identity of the offender is known to the person aggrieved by the offence or to the police officer making investigation into the offence, whichever is earlier.