A system and method to provide content and call attributes for a destination phone number using a click-to-dial connection includes accepting a query, retrieving links to a document, and searching through cached data using the query to identify relevant or destination number information. This apparatus comprises a clock signal generator unit, a modulated light projector unit, a light receiver unit, and a demodulator unit, and obtains a range image presenting signal levels changing according to the distances to the objects including the target object by irradiating light onto the objects and receiving reflected light. Therefore, it is possible to reduce current consumption in a read operation of a page mode.