Masayuki Kozuka

6336028, Jan 1, 2002

Aug 28, 2000

09/649029

Ryuichi Okamoto - Studio City CA
Hideki Matsushima - Studio City CA
Masayuki Kozuka - Arcadia CA

Matsushita Electric Industrial Co., Ltd. - Osaka

G09B 504

434319, 434118, 434365, 84462, 369 4712

An object of the present invention is to provide a system in which it is possible to pre-warn the consumer who is trying to purchase contents that cannot be written on the PD that the contents cannot be written on the PD. Based on the PD writability information, the PD writability detector determines whether the contents distributed by the distribution system notified by the distribution system detector can be written on the PD. If it is determined that the contents cannot be written, the PD writability detector requests the controller to warn the consumer.

6529506, Mar 4, 2003

Oct 8, 1999

09/414726

Masaya Yamamoto - Katano, JP
Tomoyuki Nonomura - Osaka, JP
Masataka Minami - Burbank CA
Masayuki Kozuka - Arcadia CA

Matsushita Electric Industrial Co., Ltd. - Osaka

H04L 1228

370389, 370469, 382100, 713176, 725 87, 725 98

A data processing apparatus is provided with a data obtaining unit which receives a network signal sn on a network N and obtains distributed audio data Dau in which copyright information or the like is embedded, and a control unit which obtains information indicating a watermarking method which has been used when embedding the copyright information or the like in the audio data. The embedded information is extracted by an appropriate watermarking method according to the obtained information indicating the used watermarking method. The extracted information is again embedded in the distributed audio data Dau by using a predetermined watermarking method, and thus obtained audio data is recorded on a recording medium. Therefore, regardless of the watermarking method used for embedding the copyright information or the like in the distributed audio data Dau, the distributed audio data Dau can be appropriately reproduced by reproduction apparatuses as domestic electrical equipment, according to the embedded information.

6574419, Jun 3, 2003

Mar 10, 2000

09/525336

Tomoyuki Nonomura - Osaka, JP
Masaya Yamamoto - Osaka, JP
Yoshihiro Mori - Osaka, JP
Yasushi Uesaka - Hyogo, JP
Masayuki Kozuka - Arcadia CA

Matsushita Electric Industrial Co., Ltd. - Kadoma

H04N 591

386 95, 386126, 386 96

An optical disk includes an audio data storage area for storing audio data; a still picture data storage area for storing a plurality of pieces of still picture data; and a management area for storing reproduction control information for controlling reproduction of the audio data and the plurality of pieces of still picture data. The reproduction control information has flag information representing specified still picture data among the plurality of pieces of still picture data.

6581160, Jun 17, 2003

Oct 20, 2000

09/692800

Shunji Harada - Osaka-fu, JP
Makoto Tatebayashi - Takarazuka, JP
Masayuki Kozuka - Arcadia CA
Teruto Hirota - Moriguchi, JP
Toru Kamibayashi - Chigasaki, JP
Masafumi Tamura - Chofu, JP

Matsushita Electric Industrial Co., Ltd. - Osaka

H04L 900

713169, 713158

A storage medium (PM) includes a controller and two types of storage regions, the concealed region and the open region. The open region includes an open RW storing a digital content, an open ROM-W region storing, as revocation information, identification information of an electronic appliance that is prohibited from accessing the digital content, and an open ROM region storing, as master revocation information, identification information of an electronic appliance that is prohibited from updating the revocation information. When the storage medium is loaded into an electronic appliance that has identification information which is registered in the open ROM region , the controller prohibits the electronic appliance from updating the revocation information.

6606707, Aug 12, 2003

Apr 24, 2000

09/557872

Teruto Hirota - Moriguchi, JP
Makoto Tatebayashi - Takarazuka, JP
Taihei Yugawa - Nara, JP
Masataka Minami - Burbank CA
Masayuki Kozuka - Arcadia CA

Matsushita Electric Industrial Co., Ltd. - Osaka-fu

H04L 900

713172, 713192, 713193

A semiconductor memory card comprising a control IC , a flash memory , and a ROM. The ROM holds information such as a medium ID unique to the semiconductor memory card. The flash memory includes an authentication memory and a non-authentication memory. The authentication memory can be accessed only by external devices which have been affirmatively authenticated. The non-authentication memory can be accessed by external devices whether the external devices have been affirmatively authenticated or not. The control IC includes control units and , an authentication unit and the like. The control units and control accesses to the authentication memory and the non-authentication memory , respectively. The authentication unit executes a mutual authentication with an external device.

6615192, Sep 2, 2003

Mar 10, 2000

09/523657

Kenji Tagawa - Katano, JP
Mitsuhiro Inoue - Studio City CA
Shunji Harada - Osaka, JP
Masayuki Kozuka - Arcadia CA
Shoichi Aoyama - Hirakata, JP
Yukako Ohtani - Moriguchi, JP
Noboru Hirata - Katano, JP

Matsushita Electric Industrial Co., Ltd. - Osaka

G06F 1760

705 57, 705 1, 705 50, 705 51

A content copying system is formed from a host computer and connected disc drive, a removable recording medium being loaded into the latter. When the removable recording medium loaded into the disc drive is DVD-Audio, the disc drive reads a title, recorded on the recording medium and outputs it to the host computer, where it is-stored in a hard disk. When the removable recording medium loaded into the disc drive is DVD-RAM, the disc drive has the host computer read the title recorded in the hard disk, and records this title onto the DVD-RAM. The disc drive does not increment the number of copies made for a title when it is read from DVD-Audio and recorded in the hard disk in the host computer, but only when it is read from the hard disk and recorded onto DVD-RAM.

6636773, Oct 21, 2003

May 26, 2000

09/580818

Kenji Tagawa - Katano, JP
Hideki Matsushima - Studio City CA
Teruto Hirota - Moriguchi, JP
Tomokazu Ishikawa - Toyonaka, JP
Shinji Inoue - Neyagawa, JP
Masayuki Kozuka - Arcadia CA

Matsushita Electric Industrial Co., Ltd. - Osaka-fu

G06F 1700

700 94, 364 3004, 711112

A semiconductor memory card for storing audio information with corresponding text information and type information, the type information indicating a type of the text information. The type is classified into at least (a), (b), and (c) in which the text information respectively includes a 1-byte character code sequence, a 2-byte character code sequence, and a 1-byte character code sequence and a 2-byte character code sequence.

6647496, Nov 11, 2003

May 26, 2000

09/580581

Kenji Tagawa - Katano, JP
Hideki Matsushima - Studio City CA
Teruto Hirota - Moriguchi, JP
Tomokazu Ishikawa - Toyonaka, JP
Shinji Inoue - Neyagawa, JP
Masayuki Kozuka - Arcadia CA

Matsushita Electrical Industrial Co., Ltd. - Osaka-fu

H04L 900

713193, 713167, 713200, 713201

A plurality of audio object (AOB) files and a plurality of picture object (POB) files are stored. Default Playlist Information and sets of Playlist Information each show an order in which AOBs stored in the plurality of AOB files are to be reproduced. The DPLGI includes DPLI_POB_SRPs that specify at least one POB to be displayed during the playback period of AOBs indicated by the playback order given in the Default Playlist Information. The TKGI includes TKI_POB_SRPs that specify at least one POB to be displayed only during the playback period of a particular AOB out of the AOBs indicated by the playback order given in the Default Playlist Information.