USOORE37994E

(19) United States (12) Reissued Patent

(10) Patent Number: US RE37,994 E (45) Date of Reissued Patent: Feb. 13, 2003

Fukuda et al.

(54)

METHOD AND AN APPARATUS FOR SYSTEM ENCODING BITSTREAMS FOR SEAMLESS CONNECTION

5,715,356 A 5,745,643 A 6,138,147 A

2/1998 Hirayama et 211. 4/1998 Mishina * 10/2000 Waever et al. ............ .. 709/206

FOREIGN PATENT DOCUMENTS

(75) Inventors: Hideki Fukuda, Nara (JP); Kazuhiro Tsuga, Takarazuka (JP); Takumi Hasebe, YaWata (JP); Yoshihiro Mori,

EP JP JP JP JP

Hirakata (JP); Tomoyuki Okada,

Edinburgh (GB); Kazuyoshi Horiike, Kyoto (JP)

711 083 7-336640 8-138316 8-505024 8-251538

5/1996 12/1995 5/1996 5/1996 9/1996

* cited by examiner

(73) Assignee: Matsushita Electric Industrial Co.,

Ltd., Osaka (JP)

(21) (22)

Primary Examiner—Thai Tran Assistant Examiner—Christopher Onuaku (74) Attorney, Agent, or Firm—Wenderoth, Lind & Ponack,

Appl. No.: 09/925,541

Aug. 10, 2001

Filed:

L.L.P.

(57)

Related US. Patent Documents Reissue of:

(64) Patent No.:

An encoding method for producing speci?c encoded data by

5,937,138

Issued:

Aug. 10, 1999

Appl. No.:

08/722,462

calculating the data occupancy of a decoding buffer memory of a particular siZe that is used When decoding the encoded

data during reproduction, de?ning the allocated code siZe of

Sep. 27, 1996 Foreign Application Priority Data

Filed:

(30)

a particular period based on the calculation result, and

compression coding the signal of a particular period to the allocated code siZe. The data occupancy is calculated on the

Sep. 29, 1995

(JP)

........................................... .. 7-252736

Feb. 28, 1996

(JP)

........................................... .. 8-041582

(51) (52) (58)

ABSTRACT

assumption that virtual encoded data is transferred to the decoding buffer memory following the transfer of the ?rst encoded data to the decoding buffer memory. The data

Int. Cl.7 ......................... .. H04N 5/917; H04N 7/26 US. Cl. ...................... .. 386/112; 386/111; 348/419 Field of Search ............................ .. 386/33, 68, 81,

occupancy When the last data in the ?rst encoded data is decoded is calculated as the ?nal buffer occupancy Be. The

data occupancy When the encoding process producing the

386/109, 111, 112, 348/384, 390, 419, 375/262,

second encoded data is begun is an initial buffer occupancy Bi Where the initial buffer occupancy Bi is less than the ?nal buffer occupancy Be, and thus allocated code siZe is de?ned based on the change in the data occupancy.

265 References Cited

(56)

U.S. PATENT DOCUMENTS

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(DSI__G|) Start PTM of VOBU

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(NSML_AGLl) Destination address of angle cell number 1

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