A multimedia device that uses a plurality of heterogeneous image sensors, the multimedia device comprising: a first image sensor to acquire a first image; a processor (720; 820) to: - detect multiple persons in the first image; - determine coordinate information of the multiple persons in the first image, the coordinate information providing an indication of a distance between the first image sensor and the multiple persons; a memory (640; 1213) for storing a preference channel per each of the multiple persons; a display module (1219; 1220) for displaying a guide message indicating a common preference channel list of the multiple persons; and a controller (630; 1218) for performing a control operation for, upon applying of a signal selecting a specific preference channel among the common preference channel list, switching to the selected specific preference channel, characterized in that, if the distance between the first image sensor and the multiple persons is less than a first reference value, or if a recognition rate on the face of the multiple persons that is acquired by the first image sensor is more than a second reference value, the controller detects and recognizes the face of the multiple persons by the first image sensor only; if the distance between the first image sensor and the multiple persons exceeds the first reference value, or if the recognition rate on the face of the multiple persons that is acquired by the first image sensor is less than the second reference value:. the controller detects and recognizes the face of the multiple persons by both the first image sensor and a second image sensor, the second image sensor being configured to acquire a second image, the first and second image sensors having overlapping fields of view, and. the processor is configured to: - extract a feature of the multiple persons from the second image based on the coordinate information; - compare the extracted feature to reference information; - recognize the multiple persons based on the comparison. a first image sensor to acquire a first image; a processor (720; 820) to: - detect multiple persons in the first image; - determine coordinate information of the multiple persons in the first image, the coordinate information providing an indication of a distance between the first image sensor and the multiple persons; - detect multiple persons in the first image; - determine coordinate information of the multiple persons in the first image, the coordinate information providing an indication of a distance between the first image sensor and the multiple persons; a memory (640; 1213) for storing a preference channel per each of the multiple persons; a display module (1219; 1220) for displaying a guide message indicating a common preference channel list of the multiple persons; and a controller (630; 1218) for performing a control operation for, upon applying of a signal selecting a specific preference channel among the common preference channel list, switching to the selected specific preference channel, if the distance between the first image sensor and the multiple persons is less than a first reference value, or if a recognition rate on the face of the multiple persons that is acquired by the first image sensor is more than a second reference value, the controller detects and recognizes the face of the multiple persons by the first image sensor only; if the distance between the first image sensor and the multiple persons exceeds the first reference value, or if the recognition rate on the face of the multiple persons that is acquired by the first image sensor is less than the second reference value:. the controller detects and recognizes the face of the multiple persons by both the first image sensor and a second image sensor, the second image sensor being configured to acquire a second image, the first and second image sensors having overlapping fields of view, and. the processor is configured to: - extract a feature of the multiple persons from the second image based on the coordinate information; - compare the extracted feature to reference information; - recognize the multiple persons based on the comparison.. the controller detects and recognizes the face of the multiple persons by both the first image sensor and a second image sensor, the second image sensor being configured to acquire a second image, the first and second image sensors having overlapping fields of view, and. the processor is configured to: - extract a feature of the multiple persons from the second image based on the coordinate information; - compare the extracted feature to reference information; - recognize the multiple persons based on the comparison. - extract a feature of the multiple persons from the second image based on the coordinate information; - compare the extracted feature to reference information; - recognize the multiple persons based on the comparison.