Abstract: A roadside device transmits, to a server, detection information indicating a detection result from a roadside sensor. In a case that a vehicle moving on a road toward the roadside device reaches a notification start point and that the vehicle is in a first geographic range, the server transmits the detection information received from the roadside device to the vehicle via the communication network. In a case that the vehicle moves from the first geographic range to a second geographic range located closer to the roadside device than the first geographic range, the roadside device transmits the detection information to the vehicle by the wireless communication.

Abstract: A roadside device transmits, to a server, detection information indicating a detection result from a roadside sensor. In a case that a vehicle moving on a road toward the roadside device reaches a notification start point and that the vehicle is in a first geographic range, the server transmits the detection information received from the roadside device to the vehicle via the communication network. In a case that the vehicle moves from the first geographic range to a second geographic range located closer to the roadside device than the first geographic range, the roadside device transmits the detection information to the vehicle by the wireless communication.

Abstract: A base station used in a traffic communication system includes a communicator configured to receive, via wireless communication, information transmitted from a vehicle traveling on a road, and a controller configured to identify, based on the information received by the communicator, a traveling behavior including a travel route of the vehicle on the road. The controller is configured to execute first processing for performing statistical learning or machine learning on a plurality of the traveling behaviors respectively identified for a plurality of the vehicles traveling on the road, and second processing for determining, based on a result of the first processing, whether a traffic obstacle is present on the road and a position of the traffic obstacle on the road.

Abstract: A roadside unit 40 that controls a traffic safety apparatus provided at a railroad crossing 150 at which a general road 120 on which a vehicle 20 travels and a railroad track 110 on which a railroad vehicle 10 given priority over the vehicle 20 travels intersect receives a first message from the railroad vehicle 10. The first message includes an information element indicating a railroad vehicle as a type of a transmission source vehicle, and an information element indicating at least one of a position of the railroad vehicle 10 or speed of the railroad vehicle 10. In the roadside unit 40, a communicator transmits a second message to the vehicle 20. The second message includes an information element related to waiting time for passing of the railroad vehicle 10 through the railroad crossing 150.

Abstract: A deviation amount of a pictographic character portion of “G” is calculated based on a description of a file, and left eye-use display data (ABCDEF GIJK) and right eye-use display data (ABCDEG HIJKL) in a portion (b) in FIG. 3 are generated. A starting location of a description of “ABCDEFGHIJKL” is specified by an X coordinate and a Y coordinate described in the file. In addition, a process of alternately writing pixel data constituting the left eye-use display data (ABCDEF GIJK) and pixel data constituting the right eye-use display data (ABCDEG HIJKL) from a pixel data storing location of a VRAM corresponding to the coordinates (that is, one right eye-use pixel and one left eye-use pixel are alternately written one after another in a horizontal direction as a display image) is carried out.

Abstract: A controller (101) designates the method of integrating viewpoint images. An image integrator (102) creates an integrated image by placing individual viewpoint images in appropriate positions. A 3D image control information creator (103) creates 3D image control information by formatting the placement mode of individual viewpoint images and various 3-dimensional image characteristics. An encoder (104) encodes integrated image data. A multiplexer (105) multiplexes the coded data and the 3D image control information and outputs them. A filename deciding unit (106) decides the name of a file when multiplexed data is recorded as a file. A storage directory deciding unit (107) decides the directory in which a file to be recorded is stored. A file creator (108) records a file with the decided filename under the decided storage directory. Thus, the distinction between 3-dimensional display image data and 2-dimensional image data can be clarified.

Abstract: A memory card (110) includes a memory (1415) to store encrypted content data, a license hold unit (1440) to store at least a portion of license information distributed by a distribution system, a plurality of authentication data hold units (1400.1, 1400.2), each storing a plurality of authentication data that are authenticated respectively by a plurality of public authentication keys KPma, KPmb common to the distribution system, and a switch (SW2) to selectively provide the data from the plurality of authentication data hold units outside of said recording apparatus according to a request external to the memory card (110).

Abstract: A memory card (110) conducts an authentication process with a server based on data stored in an authentication data hold unit (1400). The memory card (110) extracts a first session key (Ks1) from a server by a decryption process and a transaction ID from the data applied on a data bus (BS3). The memory card (110) generates a second session key (Ks2) through a session key generation unit (1418), and transmits to the server, as the keys to encrypt content data in receiving decryption of content data, the second session key (Ks2) and a key (KPm(1)) unique to the memory card (110) in an encrypted state with the first session key (Ks1). The transaction ID and the second session key (Ks2) stored in the log memory (1460) are used in the redistribution process.

Abstract: [problem] New functions including fade-in and fade-out are provided in view of particularity of three-dimensional image display. [means to solve the problem] During a fade-out process, a left-eye image (L image) is moved in a left direction while it is gradually reduced in size, and a right-eye image (R image) is moved in a right direction while it is gradually reduced in size. Thus, parallax between the L image and the R image is gradually increased. When the image is viewed through a 3D filter, it appears as if a subject to be displayed on a still image were gradually drawn in a depth direction. Furthermore, this effect can be magnified when the sizes of the L image and the R image are gradually reduced.

Abstract: Received electronic mail includes a text code and a pictographic character code, for example. A non-stereoscopic process is performed on an image of characters by the text code, and a stereoscopic process is performed on an image of a pictographic character by the pictographic character code. The stereoscopic process allows a viewer to observe a pictographic character representing a car LP shifted to left (shown with a dotted line) through the parallax barrier only with the right eye R, and to observe the pictographic character representing a car RP shifted to right (shown with a dotted line) through the parallax barrier only with the left eye L. Accordingly, the viewer perceives (stereoscopically views) the pictographic character representing a car at a position as if to be protruding from a display surface.

Abstract: A controller (101) designates the method of integrating viewpoint images. An image integrator (102) creates an integrated image by placing individual viewpoint images in appropriate positions. A 3D image control information creator (103) creates 3D image control information by formatting the placement mode of individual viewpoint images and various 3-dimensional image characteristics. An encoder (104) encodes integrated image data. A multiplexer (105) multiplexes the coded data and the 3D image control information and outputs them. A filename deciding unit (106) decides the name of a file when multiplexed data is recorded as a file. A storage directory deciding unit (107) decides the directory in which a file to be recorded is stored. A file creator (108) records a file with the decided filename under the decided storage directory. Thus, the distinction between 3-dimensional display image data and 2-dimensional image data can be clarified.

Abstract: A license server (10) includes a CRL database (306) holding a revocation list recording therein classes predetermined corresponding respectively to a memory device, such as a memory card, and a content reproduction circuit, such as a cellular phone, that are subjected to revocation of distributing, reproducing and transferring content data. A distribution control unit (315) suspends an operation distributing content data if the distribution is addressed to a class listed on the revocation list. The revocation list is also held in the memory card and distribution control unit (315) in distributing content also transmits information for updating the revocation list in the memory card.

Abstract: A deviation amount of a pictographic character portion of “G” is calculated based on a description of a file, and left eye-use display data (ABCDEF GIJK) and right eye-use display data (ABCDEG HIJKL) in a portion (b) in FIG. 3 are generated. A starting location of a description of “ABCDEFGHIJKL” is specified by an X coordinate and a Y coordinate described in the file. In addition, a process of alternately writing pixel data constituting the left eye-use display data (ABCDEF GIJK) and pixel data constituting the right eye-use display data (ABCDEG HIJKL) from a pixel data storing location of a VRAM corresponding to the coordinates (that is, one right eye-use pixel and one left eye-use pixel are alternately written one after another in a horizontal direction as a display image) is carried out.

Abstract: In a cellular phone, a controller stores content data received from a distribution server into a memory. When the content data is to be transmitted to a memory card, a random number key generator generates a license key, and an encryption processing unit encrypts the content data using the license key. The controller transmits encrypted content data to a memory card via a memory card interface. Then, the controller deletes the content data stored in the memory. As a result, distribution of content data that must be deleted when transferring to another apparatus can be facilitated while protecting the copyright.

Abstract: A contents utilization device according to the present invention determines whether or not digital contents are utilized, and restores license data to a state before update thereof if it is determined the digital contents are not utilized. Specifically, the license data includes usage rules for the digital contents and the like and is updated according to output of the digital contents.

Abstract: To provide a license data providing device having a function for restoring license data in writing of the license data from the license providing device to a storage device and so forth, even in a case that the license data has been lost during transmission due to an undesired situation such as failure of the power supply or the like, or a case that the receiver has failed in processing for the transmitted license data, thereby protecting the right of the user for reproduction of contents.

Abstract: A controller of a reproduction terminal determines whether a block read from a memory card is an encrypted block or a non-encrypted block, and then applies the read block to a content decrypting circuit. The controller stops supplying the block to the content decrypting circuit when a predetermined number of non-encrypted blocks are continuously read from the memory card. Consequently, reproduction of the encrypted content data can be stopped if the encrypted content data includes a continuous non-encrypted portion in which the number of non-encrypted blocks is equal to or larger than a predetermined non-zero number.

Abstract: A cellular phone (100) stores encrypted content data and encrypted license key distributed thereto in a memory card (110). The cellular phone (100) and the memory card (110) collectively perform a part of mutual authentication processing upon power-on. The encrypted license key (Kc) read from the memory card (110) is decrypted by a first decryption processing portion (1510) with a session key (Ks4), and is further decrypted by a second decryption processing portion (1514) with a system symmetric key (Kcom) for extraction. A third encryption processing portion (1516) decrypts the encrypted content data read from memory card (110) with the license key (Kc) to reproduce content data (Data).

Abstract: A memory card (110) includes a memory (1415) to store encrypted content data, a license hold unit (1440) to store at least a portion of license information distributed by a distribution system, a plurality of authentication data hold units (1400.1, 1400.2), each storing a plurality of authentication data that are authenticated respectively by a plurality of public authentication keys KPma, KPmb common to the distribution system, and a switch (SW2) to selectively provide the data from the plurality of authentication data hold units outside of said recording apparatus according to a request external to the memory card (110).

Abstract: In a cellular phone, a controller stores content data and additional information obtained from a distribution server into a memory. When the content data is to be transmitted to a memory card, a random number key generation unit generates a license key. An encryption processing unit encrypts the content data using the license key. The controller transmits the encrypted content data to the memory card via a memory card interface. Then, the controller deletes only the content data stored in the memory. As a result, distribution of content data that must be deleted when the obtained content data is to be transmitted to another apparatus can be facilitated while protecting copyright thereof.