Security system using mobile phone

• US 20040189792A1
• Filed: 03/10/2004
• Published: 09/30/2004
• Est. Priority Date: 03/28/2003
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Young-Ro, Joon, Souk-Joung
• Application Number:
  US10/797,848
• Publication Number:
  US 20040189792A1
• Time in Patent Office: Days
• US Class Current: 348/14.02
• CPC Class Codes: G08B 13/19602 Image analysis to detect motion of the intruder, e.g. by frame subtraction
• CPC Class Codes: G08B 13/19621 Portable camera
• CPC Class Codes: G08B 13/19667 Details realated to data compression, encryption or encoding, e.g. resolution modes for reducing data volume to lower transmission bandwidth or memory requirements
• CPC Class Codes: H04N 2007/145 Handheld terminals
• CPC Class Codes: H04N 21/231 Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/4331 Caching operations, e.g. of an advertisement for later insertion during playback
• CPC Class Codes: H04N 21/44008 involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream arrangements characterised by components specially adapted for monitoring, identification or recognition of video in broadcast systems H04H60/59
• CPC Class Codes: H04N 21/478 Supplemental services, e.g. displaying phone caller identification, shopping application
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006
• CPC Class Codes: H04N 7/147 Communication arrangements, e.g. identifying the communication as a video-communication, intermediate storage of the signals selecting H04Q
• CPC Class Codes: H04N 7/17318 Direct or substantially direct transmission and handling of requests

Abstract

A security system is provided that uses a video processor of a video mobile phone to detect a moving object, and includes a video mobile phone for capturing external images and determining changes from the external images, transmitting alarm signals and compressing to transmit alarm video frames; an alarm generator for receiving alarm control signals from the video mobile phone to alarm; and an alarm video storage device for receiving and storing the alarm video frames transmitted from the video mobile phone.

Claims

1. A security system comprising:

a video mobile phone having a security function for capturing external images, determining changes from previous external images, and transmitting alarm control signals and alarm video frames responsive to the determined changes;

an alarm generator in signal communication with the video mobile phone for receiving the alarm control signals from the video mobile phone and generating an alarm; and

an alarm video storage device in signal communication with the video mobile phone for receiving and storing the alarm video frames transmitted from the video mobile phone.

2. The security system of claim 1, wherein the video mobile phone comprises:

a video input device for capturing and inputting external images into the video mobile phone;

a video processor for comparing video frames inputted from the video input device to generate result values and compressing the alarm video frames according to control signals; and

an alarm controller for generating control signals to control the alarm according to the result values generated by the video processor.

3. The security system of claim 2, wherein the video processor comprises:

a video storage device for storing at least one of captured video frames inputted from the video input device and sampled video frames;

a video comparator for comparing the video frames stored in the video storage device to generate result values; and

a video converter for compressing and transmitting the video frames according to control signals from the alarm generator.

4. The security system of claim 3, wherein the video comparator compares the sum of absolute values of differences between the pixel luminance of a current video frame and the pixel luminance of a stored arbitrary video frame with a threshold value defined by an user, thereby generating result values.

5. The security system of claim 2, wherein the video processor comprises:

a video converter for converting the inputted video to generate alarm video according to control signals from an alarm controller and decoding the converted video frames;

a compressed video generator for generating compressed video with video signals generated during decoding by the video converter; and

a video comparator for comparing the compressed video to generate the result values.

6. The security system of claim 5, wherein the compressed video is produced with a DC coefficient selected from the decoding and a motion vector.

7. The security system of claim 5, wherein the video comparator compares the sum of absolute values of differences between the pixel luminance of a current video frame and the pixel luminance of a stored arbitrary video frame with a threshold value defined by an user, thereby generating result values.

8. A method of securing using a video mobile phone having a securing function, comprising the steps of:

a) setting a security mode and a threshold value with the securing function as a basis for determining whether there is motion relative to the video mobile phone;

b) inputting external images captured with a camera of the video mobile phone into the video mobile phone in the set security mode;

c) processing video frames for at least one of compressing and storing the inputted video frames and comparing the video frames to generate result values;

d) signaling an alarm according to a result of comparing the video frame; and

f) transmitting the alarm video frames inputted to the video mobile phone to a storage device.

9. The method of claim 8, wherein step c) compares the sum of absolute values of differences between the pixel luminance of a current video frame and the pixel luminance of a stored arbitrary video frame with a threshold value defined by a user, thereby generating result values.

10. The method of claim 9, wherein the video frames are originally captured images.

11. The method of claim 9, wherein the video frames are image frames obtained by sampling originally captured images.

12. The method of claim 9, wherein the video frames are image frames compressed from originally captured images.

13. A security system comprising:

a video mobile phone;

an alarm video storage device in signal communication with the video mobile phone; and

an alarm generator in signal communication with the video mobile phone.

14. A security system as defined in claim 13, further comprising a program storage device defining program steps for:

setting a security mode;

receiving video frames responsive to the set security mode;

at least one of comparing and processing the received video frames;

detecting movements responsive to the received video frames;

signaling an alarm responsive to the detected movements; and

storing received video frames relevant to the signaled alarm.

15. A security system as defined in claim 13, the video mobile phone comprising:

a video input device;

a video processor in signal communication with the video input device; and

an alarm controller in signal communication between the video processor and the alarm generator.

16. A security system as defined in claim 15, the video processor comprising:

first and second input terminals;

a video converter in signal communication with the first and second input terminals;

a video storage device in signal communication with at least one of the first and second input terminals; and

a video comparator in signal communication with the video storage device.

17. A security system as defined in claim 16, the video converter comprising:

a variable length decoder;

a motion compensator in signal communication with the variable length decoder;

an inverse quantization unit in signal communication with the variable length decoder;

an inverse discrete cosine transformer in signal communication with the inverse quantization unit; and

a summing unit in signal communication with the inverse discrete cosine transformer and the motion compensator.

18. A security system as defined in claim 15, the video processor comprising:

a video converter;

a compressed video generator in signal communication with the video converter; and

a video comparator in signal communication with the compressed video generator.

19. A security system as defined in claim 18, the video converter comprising:

a variable length decoder;

a motion compensator in signal communication with the variable length decoder;

an inverse quantization unit in signal communication with the variable length decoder;

an inverse discrete cosine transformer in signal communication with the inverse quantization unit; and

a summing unit in signal communication with the inverse discrete cosine transformer and the motion compensator.

20. A security system as defined in claim 19 wherein the compressed video generator is in signal communication with the variable length decoder and the inverse quantization unit.