Multimedia device, multiple image sensors having different types and method for controlling the same

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 second image sensor to acquire a second image;
• a processor to detect a person in the first image and to extract a feature of the person from the second image, wherein the processor determines coordinate information of the person in the first image and extracts the feature of the person in the second image based on the coordinate information, wherein the first and second image sensors have overlapping fields of view, the coordinate information provides an indication of a distance to the person, and the processor compares the extracted feature to reference information and recognizes the person based on the comparison, and wherein the processor includes a decision module to determine whether a single user has been identified or a plurality of users have been identified;
• a memory to store a preference channel per user, wherein the memory includes:
• a first generator for generating a favorite list per user, which stores a broadcast program of a channel viewed twice or more by the single user at a specific time on a specific day, and
• a second generator for generating a family favorite list that stores a broadcast program of a channel viewed twice or more by the plurality of users at a specific time on a specific day;
• a display module for displaying a guide message indicating the corresponding preference channel;
• and
• a controller for performing a control operation for switching to the corresponding preference channel when a signal selecting the corresponding preference channel is applied.

A method for managing information in a display device, comprising:

• acquiring an image;
• detecting a person in the image;
• determining coordinate information of the person in the image;
• extracting a feature of the person from the image based on the coordinate information;
• comparing the extracted feature to reference information;
• recognizing the person based on the comparison,
• determining whether a single user or a plurality of users have been identified;
• extracting information on a preference channel corresponding to a plurality of users by accessing a memory that stores a family favorite list when a plurality of users have been identified, wherein the family favorite list includes info nation regarding a broadcast program of a channel viewed twice or more by the plurality of users at a specific time on a specific day;
• and
• performing a control operation for switching to the preference channel based on the extracted information.