Apparatus and method for recording an image and computer program for the image recording apparatus

• US 20050078196A1
• Filed: 09/30/2004
• Published: 04/14/2005
• Est. Priority Date: 10/09/2003
• Status: Abandoned Application

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Okamoto, Hiroshi
• Application Number:
  US10/952,938
• Publication Number:
  US 20050078196A1
• Time in Patent Office: Days
• US Class Current: 348/231.600
• CPC Class Codes: H04N 5/772 the recording apparatus and the television camera being placed in the same enclosure
• CPC Class Codes: H04N 5/907 using static stores, e.g. storage tubes or semiconductor memories H04N5/91 takes precedence
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8063 using time division multiplex of the PCM audio and PCM video signals

Abstract

In a mobile communication terminal, a CPU (20) stores audio frame data, image frame data, and management information (MI) in respective storage areas (storage device). The management information (MI) contains information of storage positions or the like of the audio frame data and the image frame data thus stored. Whenever idle capacities of the storage areas become smaller than respective predetermined amounts, the CPU (20) moves apposition of a start frame of the stored image frame data from a current first I frame position up to a second I frame position. Then, the CPU (20) successively stores newly inputted image frame data in the resultant positions before such movement from the oldest position. During the storage, the CPU (20) performs erase and storage of the audio frame data so as for the position of the audio frame data to correspond to the storage position of the image frame data.

Claims

1. An image recording apparatus, comprising:

an image recording control circuit which records image information in a storage device, the image information being continuously inputted in a state of being divided in predetermined division units and represents at least a motion image,

wherein, when recording, said image recording control circuit erases, based on the predetermined division units, oldest image information of the image information recorded in said storage device in the state of being divided in the predetermined division units whenever an amount of image information recorded in said storage device exceeds a predetermined recordable capacity until detecting a recording end instruction, and successively records newly inputted image information in a recording position of the erased image information.

2. The apparatus according to claim 1, wherein the image information divided in the predetermined division units is image frame information based on a predetermined encoding procedure.

3. The apparatus according to claim 2, wherein the image frame information constituting one unit of the predetermined division units contains at least an Intra-coded frame, and

said image recording control circuit erases the image frame information, as an object to be erased, ranging from the frame information of an oldest first I frame to the frame information right before a next second I frame of a plurality of image frame information recorded as the image information divided in the predetermined division units in said storage device.

4. The apparatus according to claim 3, wherein said image recording control circuit changes a recording start position of the plurality of image frame information recorded in said storage device from a recording position of the first I frame to a recording position of the second I frame, and then overwrites the image frame information as the newly inputted image information in the recording position ranging from the recording position of the first I frame to the recording position of the second I frame so as to erase the object to be erased.

5. The apparatus according to claim 1, wherein said image recording control circuit carries out recording of audio information which is continuously inputted in a state of being divided in division units different from the predetermined division units in said storage device synchronously with the recording of the image information, erases the corresponding audio information of the audio information recorded in the state of being divided in the division units synchronously with the erasing of the oldest image information and the recording of the newly inputted image information, and successively record newly inputted audio information in the recording position of the erased audio information.

6. The apparatus according to claim 5, wherein said image recording control circuit multiplexes, in response to detection of the recording end instruction, the image information and the audio information which are recorded in said storage device into one file based on a predetermined data format.

7. The apparatus according to claim 3, wherein said image recording control circuit carries out recording of audio information which is continuously inputted in a state of being divided in division units different from the predetermined division units in said storage device synchronously with the recording of the image information, erases the corresponding audio information of the audio information recorded in the state of being divided in the division units synchronously with the erasing of the oldest image information and the recording of the newly inputted image information, and successively record newly inputted audio information in the recording position of the erased audio information.

8. The apparatus according to claim 4, wherein said image recording control circuit carries out recording of audio information which is continuously inputted in a state of being divided in division units different from the predetermined division units in said storage device synchronously with the recording of the image information, erases the corresponding audio information of the audio information recorded in the state of being divided in the division units synchronously with the erasing of the oldest image information and the recording of the newly inputted image information, and successively record newly inputted audio information in the recording position of the erased audio information.

9. The apparatus according to claim 1, further comprising:

image sensor which senses an image of an outside of the image recording apparatus,

wherein said image recording control circuit generates the image information divided in the predetermined division units based on an image signal representing an image sensed with said image sensor.

10. The apparatus according to claim 1, further comprising means for supplying the image information divided in the predetermined division units in said image recording control circuit.

11. The apparatus according to claim 1, further comprising:

a radio circuit which acquires the image information divided in the predetermined division units from an external apparatus.

12. The apparatus according to claim 1, wherein the image recording apparatus is a mobile communication terminal.

14. The apparatus according to claim 3, further comprising means for supplying the image information divided in the predetermined division units in said image recording control means.

13. An image recording apparatus, comprising:

image recording control means for

(A) recording image information in a storage device, said stage device being continuously inputted in a state of being divided in predetermined division units and which represents at least a motion image,

(B) erasing, based on the predetermined division units, oldest image information of the image information recorded in said storage device in the state of being divided in the predetermined division units whenever an amount of image information recorded in said storage device exceeds a predetermined recordable capacity until detecting a recording end instruction, and

(C) successively recording newly inputted image information in a recording position of the erased image information.

15. An image recording method, comprising:

continuously inputting image information, which represents at least a motion image, in a state of being divided in predetermined division units; and

recording the image information in a storage device such that erasing, based on the predetermined division units, oldest image information of the image information recorded in said storage device in the state of being divided in the predetermined division units whenever an amount of image information recorded in said storage device exceeds a predetermined recordable capacity until detecting a recording end instruction, and successively recording newly inputted image information in a recording position of the erased image information.

16. The method according to claim 15, wherein the image information divided in the predetermined division units is image frame information based on a predetermined encoding procedure.

17. The method according to claim 16, wherein the image frame information constituting one unit of the predetermined division units contains at least an Intra-coded frame, and said recording includes erasing the image frame information, as an object to be erased, ranging from the frame information of an oldest first I frame to the frame information right before a next second I frame of a plurality of image frame information recorded as the image information divided in the predetermined division units in said storage device.

18. The method according to claim 17, wherein said recording further includes:

changing a recording start position of the plurality of image frame information recorded in said storage device from a recording position of the first I frame to a recording position of the second I frame, and

overwriting the image frame information as the newly inputted image information in the recording position ranging from the recording position of the first I frame to the recording position of the second I frame so as to erase the object to be erased.

19. The method according to claim 15, wherein:

said inputting includes continuously inputting recording of audio information in a state of being divided in division units different from the predetermined division units in addition to the image information, and

said recording includes;

recording the audio information in said storage device synchronously with the recording of the image information, and

erasing the corresponding audio information of the audio information recorded in the state of being divided in the division units synchronously with the erase of the oldest image information and the recording of the newly inputted image information, and

successively recording newly inputted audio information in the recording position of the erased audio information.

20. The method according to claim 19, wherein said recording further includes multiplexing, in response to detection of the recording end instruction, the image information and the audio information which are recorded in said storage device into one file based on a predetermined data format.

21. The method according to claim 17, wherein:

said inputting includes continuously inputting recording of audio information in a state of being divided in division units different from the predetermined division units in addition to the image information, and

said recording includes;

recording the audio information in said storage device synchronously with the recording of the image information, and

erasing the corresponding audio information of the audio information recorded in the state of being divided in the division units synchronously with the erase of the oldest image information and the recording of the newly inputted image information, and

successively recording newly inputted audio information in the recording position of the erased audio information.

22. The method according to claim 18, wherein said recording further includes multiplexing, in response to detection of the recording end instruction, the image information and the audio information which are recorded in said storage device into one file based on a predetermined data format.

23. A computer program for controlling an operation of an image recording apparatus, which causes a computer to implement an image recording control function of recording image information which is continuously inputted in a state of being divided in predetermined division units and which represents at least a motion image in a storage device, characterized in that:

erasing, based on the predetermined division units, an oldest image information of the image information recorded in said storage device in the state of being divided in the predetermined division units whenever an amount of image information recorded in said storage device exceeds a predetermined recordable capacity until detecting a recording end instruction; and

successively recording newly inputted image information in a recording position of the erased image information.

24. The computer program according to claim 23, wherein said image recording control function includes:

carrying out recording of audio information which is continuously inputted in a state of being divided in division units different from the predetermined division units in said storage device synchronously with the recording of the image information,

erasing the corresponding audio information of the audio information recorded in the state of being divided in the division units synchronously with the erase of oldest image information and the recording of the newly inputted image information, and

successively recording newly inputted audio information in the recording position of the erased audio information.

25. The computer program according to claim 24, wherein said image recording control function further includes multiplexing, in response to detection of the recording end instruction, the image information and the audio information which are recorded in said storage device into one file based on a predetermined data format.