Could you point a way to make a Codeigniter view have a very long timeout?

Hi Experts

Could you point a way to make a Codeigniter view have a very long timeout?

This view maintains a dashboard open in a TV during a long time. This dashboard presents information from time to time by using code like:

 $.getJSON("survey_dashboard/get_totais", function (data) {
	$.each(data, function (g, grupo) {
		if (grupo.GRUPO == 'TOTAL') {
			total = grupo;
		} else if (grupo.GRUPO == 'ATIVO') {
			ativo = grupo;
		} else if (grupo.GRUPO == 'RECEPTIVO') {
			receptivo = grupo;
		} else if (grupo.GRUPO == 'VIVO') {
			vivo = grupo;
		}
	});

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Where

survey_dashboard/get_totais

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is a Controller function  that calls a SP

...
  public function get_totais() {

        $data = array();
        $data = $this->survey_model->new_get(array('query' => "CALL proc_pesquisa_totais()"));
        die(json_encode($data));
    }

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Because an user first need to login the system to charge the dashboard-  this start countnig time,  after the timeout is reached the dashboard closes.

Does CI has a way to extend this time?

Thanks in advance