Portable terminal system and operation method thereof
AssigneeCanon Kabushiki Kaisha
InventorsTakeshi Yamazaki, Tomochika Murakami
Life of this patent
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Abstract
A portable terminal wirelessly transmits a taken still image to a predetermined base station. An image processor receives the still image and extracts a digital watermark from the image. Further, the image processor transmits additional information according to the digital watermark to the portable terminal. Accordingly, various services using a digital watermark technique can be provided by using a portable terminal which can process a high-definition image to which a digital watermark can be embedded.
Claims32
A portable terminal system comprising:
- a portable terminal provided with a camera inside or outside thereof, the camera being able to take a still image;
- and
- an image processor performing wireless communication with the portable terminal through a predetermined base station,
- wherein the portable terminal comprises:
- holding means for holding the still image taken by using the camera;
- and
- wireless communication means for wirelessly transmitting the still image held by the holding means to the predetermined base station, and wherein
- the image processor comprises:
- receiving means for receiving the still image through the predetermined base station;
- extracting means for extracting a digital watermark embedded in the still image received by the receiving means, the digital watermark being visually imperceptible;
- and
- returning means for returning additional information according to the digital watermark extracted by the extracting means to the predetermined base station,
- wherein the portable terminal receives the additional information through the predetermined base station by using the wireless communication means so as to hold the additional information in the holding means.
An operation method of a portable terminal system comprising a portable terminal provided with a camera inside or outside thereof, the camera being able to take a still image;
- and an image processor performing wireless communication with the portable terminal through a predetermined base station, the method comprising the steps of:
- in the portable terminal;
- holding a still image taken by the camera;
- and
- transmitting the still image to the predetermined base station, and
- in the image processor;
- receiving the still image through the predetermined base station;
- extracting a digital watermark embedded in the received still image, the digital watermark being visually imperceptible;
- and
- returning additional information according to the extracted digital watermark to the predetermined base station,
- wherein the portable terminal receives the additional information through the predetermined base station wirelessly so as to hold the additional information.
A program for allowing a portable terminal or an image processor to perform a method comprising the steps of:
- in the portable terminal;
- holding a still image taken by the camera;
- and
- transmitting the still image to the predetermined base station, and
- in the image processor;
- receiving the still image through the predetermined base station;
- extracting a digital watermark embedded in the received still image, the digital watermark being visually imperceptible;
- and
- returning additional information according to the extracted digital watermark to the predetermined base station,
- wherein the portable terminal receives the additional information through the predetermined base station wirelessly so as to hold the additional information.
A storage medium for storing a program for allowing a portable terminal or an image processor to perform a method comprising the steps of:
- in the portable terminal;
- holding a still image taken by the camera;
- and
- transmitting the still image to the predetermined base station, and
- in the image processor;
- receiving the still image through the predetermined base station;
- extracting a digital watermark embedded in the received still image, the digital watermark being visually imperceptible;
- and
- returning additional information according to the extracted digital watermark to the predetermined base station,
- wherein the portable terminal receives the additional information through the predetermined base station wirelessly so as to hold the additional information.
Dependencies are inferred from the claim text.