EXHIBIT 3.1 RESTATED CERTIFICATE OF INCORPORATION OF C-CUBE MICROSYSTEMS INC. (Pursuant to Section 245 of General Corporation Law of the State of Delaware) C-Cube Microsystems Inc., a corporation organized and existing under the General Corporation Law of the State of Delaware, which was originally incorporated in Delaware under the name C-Cube Microsystems Delaware Corporation on February 8, 1994, (the "Corporation") certifies as follows: 1. The Corporation's Restated Certificate of Incorporation was duly adopted by the Board of Directors at a regular meeting in accordance with Section 245 of the Corporation Law. 2. The Corporation's Restated Certificate of Incorporation only restates and integrates and does not further amend the provisions of the Corporation's Certificate of Incorporation as theretofore amended or supplemented, and there is no discrepancy between those provisions and the provisions of the Restated Certificate. 3. The Corporation's Certificate of Incorporation is restated to read in full as follows: FIRST: The name of the Corporation is C-Cube Microsystems Inc. SECOND: The address of the registered office of the Corporation in the State of Delaware is Incorporating Services, Ltd., 15 East North Street, in the City of Dover, County of Kent. The name of the registered agent at that address is Incorporating Services, Ltd. THIRD: The purpose of the Corporation is to engage in any lawful act or activity for which a corporation may be organized under the General Corporation Law of Delaware. FOURTH: A. The total number of shares of all classes of stock which the Corporation shall have authority to issue is One Hundred Fifty Five Million (155,000,000), which consists of 150,000,000 shares of Common Stock with par value of $.001 per share and 5,000,000 shares of Preferred Stock with par value of $.001 per share. B. The Preferred shares authorized by this Certificate of Incorporation may be issued from time to time in one or more series. The Board of Directors is authorized to determine, alter or eliminate any or all of the rights, preferences, privileges and restrictions granted to or imposed upon any wholly unissued series of Preferred shares, and to fix, increase or decrease the number of shares comprising any such series and the designation thereof, or any of them, and to provide for the rights and terms of redemption or conversion of the shares of any such series. FIFTH: The following provisions are inserted for the management of the business and the conduct of the affairs of the Corporation, and for further definition, limitation and regulation of the powers of the Corporation and of its directors and stockholders: A. The business and affairs of the Corporation shall be managed by or under the direction of the Board of Directors. In addition to the powers and authority expressly conferred upon them by statute or by this Certificate of Incorporation or the By-Laws of the Corporation, the directors are hereby empowered to exercise all such powers and do all such acts and things as may be exercised or done by the Corporation. B. The directors of the Corporation need not be elected by written ballot unless the By-Laws so provide. C. On and after the closing date of the first sale of the Corporation's Common Stock pursuant to a firmly underwritten registered public offering (the "IPO"), any action required or permitted to be taken by the stockholders of the Corporation must be effected at a duty called annual or special meeting of stockholders of the Corporation and may not be effected by any consent in writing by such stockholders. Prior to such sale, unless otherwise provided by law, any action which may otherwise be taken at any meeting of the stockholders may be taken without a meeting and without prior notice, if a written consent describing such actions is signed by the holders of outstanding shares having not less than the minimum number of votes which would be necessary to authorize or take such action at a meeting at which all shares entitled to vote thereon were present and voted. D. Special meetings of stockholders of the Corporation may be called only (1) by the Board of Directors pursuant to a resolution adopted by a majority of the total number of authorized directors (whether or not there exist any vacancies in previously authorized directorships at the time any such resolution is presented to the Board for adoption) or (2) by the holders of not less than ten percent (10%) of all of the shares entitled to cast votes at the meeting. -2- SIXTH: A. The number of directors shall initially be eight (8) and, thereafter, shall be fixed from time to time exclusively by the Board of Directors pursuant to a resolution adopted by a majority of the total number of authorized directors (whether or not there exist any vacancies in previously authorized directorships at the time any such resolution is presented to the Board for adoption). After the closing of the IPO, the directors shall be divided into three classes, with the term of office of the first class (Class I) to expire at the first annual meeting of the stockholders following the IPO; the term of office of the second class (Class II) to expire at the second annual meeting of stockholders held following the IPO; the term of office of the third class (Class III) to expire at the third annual meeting of stockholders following the IPO; and thereafter for each such term to expire at each third succeeding annual meeting of stockholders after such election. Subject to the rights of the holders of any series of Preferred Stock then outstanding, a vacancy resulting from the removal of a director by the stockholders as provided in Article SIXTH, Section C below may be filled at a special meeting of the stockholders held for that purpose. All directors shall hold office until the expiration of the term for which elected, and until their respective successors are elected, except in the case of the death, resignation, or removal of any director. B. Subject to the rights of the holders of any series of Preferred Stock then outstanding, newly created directorships resulting from any increase in the authorized number of directors or any vacancies in the Board of Directors resulting from death, resignation or other cause (other than removal from office by a vote of the stockholders) may be filled only by a majority vote of the directors then in office, though less than a quorum, and directors so chosen shall hold office for a term expiring at the next annual meeting of stockholders at which the term of office of the class to which they have been elected expires, and until their respective successors are elected, except in the case of the death, resignation, or removal of any director. No decrease in the number of directors constituting the Board of Directors shall shorten the term of any incumbent director. C. Subject to the rights of the holders of any series of Preferred Stock then outstanding, any directors, or the entire Board of Directors, may be removed from office at any time, with or without cause, but only by the affirmative vote of the holders of at least a majority of the voting power of all of the then outstanding shares of capital stock of the Corporation entitled to vote generally in the election of directors, voting together as a single class. Vacancies in the Board of Directors resulting from such removal may be filled by a majority of the directors then in office, though less than a quorum, or by the stockholders as provided in Article SIXTH, Section A above. Directors so chosen shall -3- hold office for a term expiring at the next annual meeting of stockholders at which the term of office of the class to which they have been elected expires, and until their respective successors are elected, except in the case of the death, resignation, or removal of any director. SEVENTH: The Board of Directors is expressly empowered to adopt, amend or repeal By-Laws of the Corporation. Any adoption, amendment or repeal of By-Laws of the Corporation by the Board of Directors shall require the approval of a majority of the total number of authorized directors (whether or not there exist any vacancies in previously authorized directorships at the time any resolution providing for adoption, amendment or repeal is presented to the Board). The stockholders shall also have power to adopt, amend or repeal the By-Laws of the Corporation. Any adoption, amendment or repeal of By-Laws of the Corporation by the stockholders shall require, in addition to any vote of the holders of any class or series of stock of the Corporation required by law or by this Certificate of Incorporation, the affirmative vote of the holders of at least sixty-six and two- thirds percent (66-2/3%) of the voting power of all of the then outstanding shares of the capital stock of the Corporation entitled to vote generally in the election of directors, voting together as a single class. EIGHTH: A director of the Corporation shall not be personally liable to the Corporation or its stockholders for monetary damages for breach of fiduciary duty as a director, except for liability (i) for any breach of the director's duty of loyalty to the Corporation or its stockholders, (ii) for acts or omissions not in good faith or which involved intentional misconduct or a knowing violation of law, (iii) under Section 174 of the Delaware General Corporation Law, or (iv) for any transaction from which the director derived an improper personal benefit. If the Delaware General Corporation Law is hereafter amended to authorize the further elimination or limitation of the liability of a director, then the liability of a director of the Corporation shall be eliminated or limited to the fullest extent permitted by the Delaware General Corporation Law, as so amended. Any repeal or modification of the foregoing provisions of this Article EIGHTH by the stockholders of the Corporation shall not adversely affect any right or protection of a director of the Corporation existing at the time of such repeal or modification. NINTH: The Corporation reserves the right to amend or repeal any provision contained in this Certificate of Incorporation in the manner prescribed by the laws of the State of Delaware and all rights conferred upon stockholders are granted subject to this reservation; PROVIDED, HOWEVER, that, notwithstanding any other provision of this Certificate of Incorporation or any provision of law which -4- might otherwise permit a lesser vote or no vote, but in addition to any vote of the holders of any class or series of the stock of this Corporation required by law or by this Certificate of Incorporation, the affirmative vote of the holders of at least 66-2/3% of the voting power of all of the then outstanding shares of the capital stock of the Corporation entitled to vote generally in the election of directors, voting together as a single class, shall be required to amend or repeal this Article NINTH, Article FIFTH, Article SIXTH, Article SEVENTH or Article EIGHTH. TENTH: The name and mailing address of the incorporator is: Andrea Charvet Gray Cary Ware & Freidenrich 400 Hamilton Avenue Palo Alto, California 94301 IN WITNESS WHEREOF, the Corporation has caused this Restated Certificate to be signed and attested by its duly authorized officers on this 18th day of April, 1996. C-CUBE MICROSYSTEMS INC. By: /s/ ALEXANDRE A. BALKANSKI -------------------------------------- Alexandre A. Balkanski, President ATTEST: /s/ JAMES G. BURKE - ---------------------------------- James G. Burke, Secretary -5-