Encoded data recording apparatus and mobile terminal

• US 20030007556A1
• Filed: 01/31/2002
• Published: 01/09/2003
• Est. Priority Date: 03/06/2000
• Status: Active Grant

• Current Assignee: Fujitsu Mobile Communications Limited (Fujitsu Limited)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Arai, Yasunori, Sato, Yuichiro, Ogasawara, Hiroshi, Ito, Koichi, Kataoka, Yoshihiro, Yamaguchi, Kentoku, Oura, Seiji, Yamagishi, Osamu
• Granted Patent: US 7,376,330 B2
• Time in Patent Office: Days
• US Class Current: 375/240.01
• CPC Class Codes: H04N 19/40 using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
• CPC Class Codes: H04N 19/503 involving temporal prediction adaptive coding with adaptive selection between spatial and temporal predictive coding H04N19/107; adaptive coding with adaptive selection among a plurality of temporal predictive coding modes H04N19/109
• CPC Class Codes: H04N 19/61 in combination with predictive coding
• 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 21/4334 Recording operations recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 21/4402 involving reformatting operations of video signals for household redistribution, storage or real-time display details of conversion of video standards at pixel level H04N7/01; video transcoding H04N19/40; adapting incoming signals to the display format of the display terminal G09G5/005; media handling at the source in data packet switching networks H04L65/764
• CPC Class Codes: H04N 21/6131 involving transmission via a mobile phone network wireless downlink channel access H04W74/006

Abstract

In a mobile terminal provided with an encoded data recording function, there is assumed a condition in which a picture frame transmitted from the terminal of a communication partner is reproduced by means of decoding processing and is displayed on a LCD (34) during wireless TV phone communication. In this condition, when a user carries out a picture recording start operation, display picture data reproduced by means of decoding processing in the multimedia processing section (24) to be displayed on the LCD (34) are recorded in a main recording section (26).

Claims

1. An encoded data recording apparatus for recording encoded data composed of first data generated based on original data having correlations on the time axis in an initial frame timing thereof and of a plurality of second data generated respectively in a plurality of frame timings subsequent to said initial frame timing, said first data having an independent meaning alone and said plurality of second data containing mainly a difference between the original data of a current frame and the original data of the preceding frame respectively, said apparatus comprising:

encoded data input means for inputting said encoded data;

data reproduction processing means for reproducing said original data based on the first data and the second data of the encoded data inputted by means of this data input means;

recording period specifying means for specifying the recording period of said encoded data; and

recording control means for recording the original data reproduced by said data reproduction processing means in the recording period concerned in a recording medium when the recording period is specified by said recording period specifying means in period inputting said encoded data.

2. The encoded data recording apparatus according to claim 1, wherein said recording control means records the original data reproduced by said data reproduction processing means in a recording medium in the first frame timing of said recording period and records the second data inputted by said encoded data input means in said recording medium in the frame timings subsequent to said first frame timing.

3. The encoded data recording apparatus according to claim 1, wherein said recording control means comprises:

re-encoding means for re-encoding the original data reproduced by said data reproduction processing means in said recording period into first data and a plurality of second data; and

means for recording the first data and the plurality of second data obtained by said re-encoding means in said recording medium.

4. The encoded data recording apparatus according to claim 1, wherein said recording control means comprises:

recorded data holding means for holding the original data reproduced by said data reproduction processing means in said recording period temporarily till the input period of said encoded data comes to an end; and

means for re-encoding the original data held temporarily in said recorded data holding means into first data and a plurality of second data and recording them in said recording medium after the input period of said encoded data has come to an end.

5. A mobile terminal for receiving over radio channels and recording encoded data composed of first data generated based on the original data having correlations on the time axis in the initial frame timing thereof and of a plurality of second data generated respectively in a plurality of frame timings subsequent to said initial frame timing, said first data having an independent meaning alone and said plurality of second data containing mainly a difference between the original data of a current frame and the original data of the preceding frame respectively, said mobile terminal comprising:

radio receiving means for receiving encoded data transmitted over said radio channels;

data reproduction processing means for reproducing said original data based on the first data and the second data of the encoded data received by said radio receiving means;

recording period specifying means for specifying the recording period of said encoded data; and

recording control means for recording the original data reproduced by said data reproduction processing means in the recording period concerned in a recording medium when the recording period is specified by said recording period specifying means in receiving said encoded data.

6. The mobile terminal according to claim 5, wherein said recording control means records the original data reproduced by said data reproduction processing means in a recording medium in the first frame timing of said recording period and records the second data of the encoded data received by said radio receiving means in said recording medium in the frame timings subsequent to said first frame timing.

7. The mobile terminal according to claim 5, wherein said recording control means comprises:

re-encoding means for re-encoding the original data reproduced by said data reproduction processing means in said recording period into first data and a plurality of second data; and

means for recording the first data and the plurality of second data obtained by said re-encoding means in said recording medium.

8. The mobile terminal according to claim 7, wherein, when transmission encoding means for encoding the original data to be transmitted into first data and a plurality of second data and transmitting them wirelessly is provided,

said transmission encoding means functions also as said re-encoding means.

9. The mobile terminal according to claim 5, wherein said recording control means comprises:

recorded data holding means for holding the original data reproduced by said data reproduction processing means in said recording period temporarily till the receiving period of said encoded data comes to an end;

re-encoding means for re-encoding the original data held temporarily in said recorded data holding means into first data and a plurality of second data after the receiving period of said encoded data has come to an end; and

means for recording the first data and the plurality of second data obtained by said re-encoding means in said recording medium.

10. The mobile terminal according to claim 9, wherein, when a transmission encoding means for encoding the original data to be transmitted into first data and a plurality of second data and transmitting them wirelessly is provided,

said transmission encoding means functions also as said re-encoding means.

11. The mobile terminal according to claim 5, wherein said data reproduction processing means reproduces original data according to a data decoding scheme specified in MPEG-4 (Moving Picture Experts Group-4).