Back Channel in Interactive Digital Television Systems: Strategies for Prototyping Applications using an Interactive Service Provider - Internet Computing - Interactive and Multimedia Web Applications. - João Benedito dos Santos Junior; João Carlos de Moraes Morselli Junior; Iran Calixto Abrão; Fabiano Costa Teixeira; Gabriel Massote Prado; Paulo Muniz de Ávila; Mateus dos Santos; Rinaldi Fonseca do Nascimento (ICEIS (5), 2009)