1. You'll have to take apart your dvd player to even know if it uses a regular ide or sata connection.
2. Even if your dvd player uses a regular ide or sata connector you'd need to buy an ide-to-usb or sata-to-usb peripheral.
3. If your dvd player uses some other proprietary connector, then you have just either revoked your warranty, or broke your dvd player. This would render your effort pretty useless.
Save yourself the headache and tinkering and buy an external optical drive.