Mobile communication system, mobile communication terminal and program thereof for displaying video at desired positions

• US 7,405,752 B2
• Filed: 04/14/2004
• Issued: 07/29/2008
• Est. Priority Date: 04/14/2003
• Status: Expired due to Fees

• Current Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Original Assignee: NTT Docomo Incorporated (Nippon Telegraph and Telephone Corporation)
• Inventors: Anzawa, Kazuya, Kondo, Daisuke
• Primary Examiner(s): Harper; Vincent P.
• Assistant Examiner(s): LAM, DUNG LE
• Application Number:
  US10/824,858
• Publication Number:
  US 20040257440A1
• Time in Patent Office: 1,567 Days
• Field of Search: 382/100, 382/233, 382/284, 382/176, 707/3, 707/104.1, 713/176, 375/240.1, 375/240.25, 348/94, 348/180, 348/207.9, 348/143, 348/169, 455/566, 455/456.1, 455/457, 455/456.6
• US Class Current: 348/222.1
• CPC Class Codes: G01C 21/3647 Guidance involving output of stored or live camera images or video streams

Abstract

In a mobile communication terminal 10, a position information assigning section 24 associates images acquired by the photographing section 20 with position information concerning the positions at which these images are acquired. A video generating section 30 generates, by using the images, a video including frames associated with the position information. A video searching section 70 specifies the frame of the video associated with position information, which is close to the position information acquired by a position detecting section 22. A playback section 72 displays the specified frame.

Claims

1. A mobile communication terminal comprising:

position information acquiring means for acquiring position information;

photographing means for acquiring images of field;

position information assigning means for associating each of the images, which are acquired by the photographing means in a predetermined time interval, with the position information which is acquired by the position information acquiring means and specifies the position at which the image is acquired;

video generating means for generating a video including frames each associated with the position information concerning the acquired position, based on a plurality of images which are photographed by the photographing means and include the images each associated with the position information by the position information assigning means;

storage means for storing the video generated by the video generating means and items of the position information which are associated with the frames included in the video;

transmitting means for transmitting the video and the items of position information associated with the frames included in the video, which are stored in the storage means; and

frame rate adjusting means for adjusting the frame rate of the video, based on a plurality of images acquired by the photographing means including the images each associated with the position information by the position information assigning means, the frame rate adjusting means dividing the plurality of images into a plurality of groups including a predetermined number of images based on the order in which the images are acquired, determining, for each of the groups, direction information indicating the direction of a travel locus based on the position information associated with the predetermined number of images in the corresponding group, setting, for each of the groups, a frame rate for the video based on the predetermined number of images in the corresponding group to a first frame rate when a direction change amount based on the direction information determined for the corresponding group and the direction information determined for at least one of the previous group and the next group is larger than a predetermined amount and settings the frame rate to a second frame rate lower than the first frame rate when the direction change amount is equal to or smaller than the predetermined amount,

wherein the video generating means generates the video using the plurality of images, according to the frame rate determined for each of the plurality of groups.

2. A mobile communication terminal comprising:

position information acquiring means for acquiring position information;

photographing means for acquiring images of field;

position information assigning means for associating each of the images, which are acquired by the photographing means in a predetermined time interval, with the position information which is acquired by the position information acquiring means and specifies the position at which the image is acquired;

video generating means for generating a video including frames each associated with the position information concerning the acquired position, based on a plurality of images which are photographed by the photographing means and include the images each associated with the position information by the position information by the position information assigning means;

storage means for storing the video generated by the video generating means and items of the position information which are associated with the frames included in the video;

searching means for specifying, among the items of position information stored in the storage means, the position information corresponding to the position information acquired by the position information acquiring means to specify the frame of the video associated with the specified position information;

playback means for displaying the frame of the video specified by the searching means; and

frame rate adjusting means for adjusting the frame rate of the video, based on a plurality of images acquired by the photographing means including the images each associated with the position information by the position information assigning means, the frame rate adjusting means dividing the plurality of images into a plurality of groups including a predetermined number of images based on the order in which the images are acquired, determining, for each of the groups, direction information indicating the direction of a travel locus based on the position information associated with the predetermined number of images in the corresponding group, setting, for each of the groups, a frame rate for the video based on the predetermined number of images in the corresponding group to a first frame rate when a direction change amount based on the direction information determined for the corresponding group and the direction information determined for at least one of the previous group and the next group is larger than a predetermined amount and settings the frame rate to a second frame rate lower than the first frame rate when the direction change amount is equal to or smaller than the predetermined amount,

wherein the video generating means generates the video using the plurality of images, according to the frame rate determined for each of the plurality of groups.

3. A video generating system comprising:

position information acquisition device for acquiring position information;

image acquiring device for acquiring images;

position information associating component for associating the acquired images with the acquired position information in order to specify the position at which the image is acquired;

video generator for generating a video, the video generator at least partly using information from the position information associating component in order to generate the video;

memory for storing the video generated by the video generator; and

a position analyzer that analyzes the acquired images and the acquired position information in order to generate at least one aspect of the video,

wherein the video generator uses the at least one aspect of the video in order to generate the video,

wherein the position analyzer comprises a frame rate analyzer,

wherein the at least one aspect comprises the frame rate of the video,

wherein the frame rate analyzer determines a direction of the acquired images; and

wherein the frame rate analyzer uses the direction of the acquired image in order to determine the frame rate of the video.