A federal court has upheld regulations that require cable TV companies to make channels they own available to satellite TV providers and other rivals on equal terms.

Friday's ruling by the U.S. Court of Appeals for the District of Columbia leaves in place the Federal Communications Commission "program access" rules. The ruling marks a setback for Cablevision Systems Corp. and Comcast Corp., the cable companies that had challenged the rules in court.

Comcast has nonetheless pledged to extend those rules to the local NBC and Telemundo stations it would control as part of its proposed combination with NBC Universal. Comcast is seeking FCC and Justice Department approval to buy a 51 percent stake in NBC Universal from General Electric Co.