Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Canon Kabushiki Kaisha

Panasonic Intellectual Property Management Co., Ltd.

Eiji Ueda

Futoshi Nakabe

Toshio Inaji

Shinji Kawano

Motoji Ohmori

Takashi Inoue

Yasumori Hino

Makoto Gotou

Seiji Sakashita

Masahiro Kawasaki

Hidenori Tatsumi

Hiromi Kawamura

Shizuka Sakamoto

Yuka Matsushita

Toshitaka Hanaura

Katsuya Watanabe

Osamu Koyama

Masahiro Birukawa

Susumu Kobayashi

Takashi Kishimoto

Koichiro Nishikawa

Yuuichi Kuze

Noriko Sugimoto

Shin-ichi Yamada

Kenzo Ishibashi

Akira Yoshikawa

Keisuke Matsuo

Kiyokazu Hashimoto

Eiichi Igami

Akihiko Nakamura

Hiroshige Ishibashi

Tadakatsu Masaki

Masanori Nakanishi

Kenichi Ueda

Hideki Ohyama

Tetsuji Sumita

Takeshi Ohmura

Takeo Oosaki

A disc recorder and player apparatus includes a plurality of recorder and player subsystems, a disc motor, and a controller. Each of the recorder and player subsystems includes a pickup and a traverse motor. When one of the recorder and player subsystems writes or reads data on or from a first track on the disc recording medium, the controller prohibits the other of the recorder and player subsystems from writing and reading data on and from a second track on the disc recording medium as well as moving the pickup to the second track, the second track being at a position different from a position of the first track, and the second track being to be accessed at a rotational speed different from a rotational speed for the first track.

Disc recorder and player apparatus including multiple recorder and player subsystems

An optical disc apparatus includes: a defect detecting sectionfor detecting, based on a light detection signal and with respect to a preset detection reference level, a fingerprint or a bubble on the discas a defect to output a defect detection signal; and a waveform shaping sectionto output a hold signal that holds, in response to the defect detection signal, a signal from a tracking control sectionat a level just before the defect has occurred. The apparatus is initially operated not to hold the signal from the tracking control sectioneven if there is a defect. But once a tracking failure has occurred during a read operation, settings are changed to hold the signal from the tracking control sectionagainst the defect while the read operation is retried.

Optical disc device

A wireless communications terminal prevents radio interferences caused by other wireless communications concurrent with a contactless communication. A wireless communications terminal receives, in a contactless communication, a command from a reader/writer via a second wireless communications section, and analyzes the received command. The wireless communications terminal controls a wireless communications control section to deactivate or temporarily deactivate the function of a first wireless communications section depending on the analysis of the command. After the function of the first wireless communications section is deactivated or temporarily deactivated, the wireless communications terminal accesses a memory area of an IC card microcomputer system as specified by the command to perform a contactless communication.

Wireless communications terminal, communications protocol switching method, communications protocol switching program, and integrated circuit of wireless communications terminal

The present invention aims at providing a contactless card that enables a reader/writer to identify which card such reader/writer is communicating with in a set of card identification processes and that improves the possibility of protecting the cardholder's privacy. Contactless card () includes: power detection unit (); random number ID generation unit () that determines an identifier that identifies card (), every time power detection unit () detects that electric power has been supplied; ID storage unit () that holds the determined identifier; sending/receiving circuit () that receives a command requesting that the identifier that identifies card () should be sent to reader/writer (), and sending/receiving circuit () sends, to reader/writer (), the determined identifier in the case where the received command is a first-received command, and the held identifier in the case where the received command is a second- or later-received command.

Contactless card

A semiconductor memory card includes a direction obtainment unit which obtains a first access direction type in which the semiconductor memory card accesses the reader/writer; a condition management unit which previously hold and manages an access condition including two or more of second access direction types; a condition judgment unit which compares two or more of the first access direction types and two or more of the second access direction types, and judges whether or not they match each other; and an execution unit which executes a predetermined application program when it is judged that the first and second access direction types match each other.

Semiconductor memory card

Via a mobile communication network, a transmission apparatus receives position information representing a current position of a reception apparatus. Based on the received position information, the transmission apparatus generates notice data indicating that it is necessary to correct preprogrammed program information identifying a program which has been preprogrammed for viewing or preprogrammed for recording and being generated at the reception apparatus, and transmits the generated notice data to the reception apparatus. Accordingly, a transmission apparatus is provided which generates information that allows preprogramming of a broadcast program for viewing or recording to be properly performed at the reception apparatus side, or which generates a correct broadcast program table, and transmits the generated information or program table to the reception apparatus.

Transmission apparatus and reception apparatus

A mail gateway generates an identifier for each attached file included in the e-mail addressed to a user and held in a mail server, and notifies a mail terminal belonging to the user of a list of generated IDs. When the user selects attached files that the user wants to attach to the e-mail from the list of IDs that is notified from the mail gateway, the mail gateway constructs e-mail including the selected attached files and the mail server transmits the constructed e-mail to addresses of the receivers of the e-mail.

System for transmission/reception of e-mail with attached files

A contactless integrated circuit (IC) card () is comprised of the following: a first antenna coil () and a second antenna coil () for generating an electromotive force by receiving electromagnetic waves from a reader/writer; a first electromotive force measuring unit () and a second electromotive force measuring unit () for respectively measuring the electromotive force generated by each of the antenna coils; an electromotive force comparing unit () for comparing the characteristics of the electromotive forces which are respectively generated by the respective antenna coils and then measured; and an application selecting/executing unit () for selecting one application from a program storing unit () based on the comparison made by the electromotive force comparing unit () and executing the selected application.

Contactless IC card

A data distribution system is provided which generates outputs attribute data about multimedia data in advance and broadcasts the output attribute data together with the multimedia data so that the receiving terminal can grasp the outlines of the entire multimedia data and improve the visibility. A data broadcasting device () generates output attribute data about multimedia data in a data analyzing portion (). The output attribute data exists alone or is embedded in the multimedia data. The multimedia data and the output attribute data are encoded in a protocol encoder () and broadcast from a transmitter (). A receiving terminal device () receives the broadcast data in a tuner () and obtains the multimedia data and output attribute data in a tuner (). When a data display portion () displays the obtained multimedia data, the output attribute data is referred to and information related to the multimedia data is displayed together with the multimedia data. A data analyzing portion () analyzes the multimedia data and extracts the output attribute data embedded therein.

Broadcast data receiving device and method for receiving a plurality of multimedia data

The present invention provides a deficiency detecting apparatus that can accurately detect dusts and deficiencies on an optical disk even when an emitting power of a laser light source changes. The deficiency detecting apparatus is provided with a deficiency detecting section for detecting deficiencies or the like on an optical disk by reflected light, and a power adjusting section for adjusting an emitting power of a laser light source to be an optimum value. The deficiency detecting section can accurately detect the deficiencies on the optical disk even when the laser power changes by comparing a threshold value, which is determined in accordance with the adjustment result of the power adjusting section, with a value in accordance with the reflected light.

Deficiency detecting apparatus for optical disk

A recording medium is provided which is protected against unauthorized use and has heightened security. The recording medium stores storage authentication information that authenticates a user, and has an area that corresponds to the storage authentication information. The recording medium further includes a tamper-resistant authentication unit that judges whether or not received authentication information that authenticates a user matches the storage authentication information. The authentication unit is prevented from being decoded or tampered by third parties. In addition, it is possible to restrict access to the area according to the content of authentication.

System for preventing unauthorized use of recording media

A tracking control apparatus for stable tracking lead-in of an optical disc which has wobble grooves as tracks, including: a signal detection unit that detects tracking error and wobble signals from an optical spot; a speed detection unit that calculates a relative moving speed between the optical spot and the tracks; a polarity judgment unit that judges that the optical spot is on a land if a wobble signal amplitude value is equal to or lower than a predetermined value in the vicinity of a zero-cross point; a moving direction judgment unit that, when the relative moving speed is within a predetermined range and the optical spot is on a land, judges a moving direction of the optical spot from a rise/decay direction of the tracking error signal; and a control unit that performs a tracking lead-in by reducing the moving speed, based on the moving speed and moving direction.

Optical disc tracking control device, tracking control method, and tracking control program

The object of the present invention is to provide a semiconductor memory which executes executing multiple application programs and duplicating important data from one application program into another application program in security. An IC card () is one example of the semiconductor memory of the present invention, and executes executing multiple application programs. The IC card () includes: a memory area () for storing data relating to a library APL (); a memory area () for storing data relating to a public pool APL (); a security level setting unit () which identifies respective security levels of the library APL () and the public pool APL () for the data relating to these application programs, based on a criterion for identifying the security level of an application program for the data relating to it; and a data operation unit () which duplicates data A stored in the memory area () and stores the duplicated data A into the memory area (), without taking the data A outside of the IC card (), in the case where the relationship between the two security levels identified by the security level setting unit () meets a predetermined condition.

Semiconductor memory

A portable terminal allows the user to flexibly and readily change an overlay output distribution for reproduced data in accordance with the user's taste and can automatically control the overlay output distribution in accordance with a surrounding environment. A setting means sets output parameters which are parameters related to reproduced data output for each reproduced data. A data output control means processes each of the reproduced data based on the output parameters set by the setting means and outputs the processed output data.

Portable terminal, overlay output method, and program therefor

The present invention provides an optical recording medium capable of detecting groove start signals and groove end signals with an inexpensive detection circuit and allowing quick, stable clock detection and tracking pull-in, which optical recording medium is constructed in such a way that the depth Dof the grooves satisfies D/(&#x3bb;/N)&#x3c;0.16, where &#x3bb; is a wavelength of a light beam and N is an index of refraction of a substrate, and that the distance Lbetween the groove edge and the pit closest thereto satisfies L&#x3e;1.2 FWHM, where FWHM is a full width at half maximum of the light beam in the track direction.

Growing community of inventors

Hiroshima, Japan

Eiji Ueda