Kabushiki Kaisha Toshiba

Alpine Electronics, Inc.

Other

Dolby Laboratories Corporation

Kenjiro Endoh

Koichi Hirayama

Masatoshi Nakai

Yuichi Miyano

Hisashi Yamada

Kenji Shimoda

Naoki Endoh

Takehisa Kato

Takehiko Okuyama

Taku Kato

Craig C Todd

Osamu Yasuda

Taku Katoh

A three-dimensional image sensor for detecting the three-dimensional position of an object, a coordinate detection unit for detecting the coordinate position of an objective point on a display screen based on the position of the object in a virtual pointing space, a movement detection unit for detecting the three-dimensional movement of the object in the pointing space, and an operation input contents determination unit for determining an operation based on the three-dimensional movement or the like of the object are provided, so that the inconvenience of moving a pointing device such as a finger to a fixed spatial plane is avoided by setting the pointing space which can be operated by the pointing device as a pyramid shape defined by connecting the display screen and a reference point.

Operation input device and method of operation input

A vehicle detector includes a detecting apparatus and a determining apparatus. If a plurality of detection points detected by the detecting apparatus forms a group of detection points, the determining apparatus sets a determining virtual window encompassing the group of detection points and determines whether the group of detection points is likely to represent the one vehicle based on a state of movement of the group of detection points with respect to the determining virtual window.

Vehicle detector and vehicle detecting method

In an embodiment, a copy-guard system is provided that includes a decoding section for decoding digital data, which is encoded and error-correction-coded, from an information recording medium in which key information encoded for the digital data is recorded, an encoded digital data acquisition section for acquiring digital data encoded by error-correcting the digital data decoded by the decoding section, a detection section for detecting an error position and an error symbol value of the encoded digital data, identification information detection section for detecting an identification information representing whether the information recording medium is original or copied and which is replaced with a part of the digital data encoded and error-correction-coded, based on the error position and the error symbol value detected by the detection section, a determination section for determining whether a copy of the information recording medium is protected, and a copy protection section.

Copy-guard system and information recording medium used in the same system

This invention protects the unauthorized copy of multimedia data, recorded on an information recording medium, by using electronic watermark information and key information. The electronic watermark information embedded in the multimedia data is extracted by an electronic watermark extraction unit on the decryption system side. A disk key is obtained using the electronic watermark information and a part master key. The multimedia data is decrypted using the resultant disk key.

Copy protection apparatus and information recording medium used in this copy protection apparatus

A copy flag detecting circuit in a device detects the copy generation management information. This copy generation management information is inserted in the CIP header of the IEEE 1394 packet for transmission. The copy flag detector of the 1394 interface in the device detects the copy generation management information in the CIP header. According to the detection result, the copy generation managing circuit records new copy generation management information and the recording controlling circuit permits or prohibits recording. Thus, there is no need for a decoding circuit at a receiving device.

Device having a digital interface and a network system using such a device and a copy protection method

A reproduction apparatus is designed to select and decode speech and subtitles (characters) in a given language from a disk on which various types of information are recorded in different languages. This system arrangement makes it possible to standardize the manufacture of disks and reproduction apparatuses world-wide, resulting in a reduction in production cost. In a disk 100, various types of information are recorded in different languages along with video information. A reproduction apparatus selects information in a given language from the reproduced information using a data string processing section 203, a system control section 204, and an operator section 205, and supplies the selected pieces of information to each of a video processing section 206, a subtitle decoder 211, and an audio processing section 213.

Multilingual recording medium and reproduction apparatus

Device having a digital interface and a network system using such a

When an audio stream signal is transmitted, the bit stream information for determining the surround mode and special-use mode, including karaoke use, is sensed from the signal at a mode sensor. After the surround mode has been sensed, the audio data is converted by a decoder into a front left, front center, and front right main audio signals and a back left and back right surround audio signals in the surround mode, which are converted into analog signals and outputted to the corresponding speakers. When the special-use mode has been sensed, by using the central main audio signal of the front left, front center, and front right main audio signals and back left and back right surround audio signals converted at the decoder, a normally used first-type accompanying sound selectively made unused, for example, guide melody, is generated. In addition, by using the back left and back right surround audio signals, a normally unused second-type accompanying sound selectively used, for example, vocals, is generated. The first-and second-type accompanying sounds, together with the front left and front right main audio signals, are reproduced selectively. Consequently, a system that transmits surround sound using a plurality of channels can maintain compatibility with a surround system easily, when the plurality of channels are applied to special use, such as karaoke, not being restricted to surround use.

Audio system which not only enables the application of the surround

A reproduction apparatus is designed to select and decode speech and subtitles (characters) in a given language from a disk on which various types of information are recorded in different languages. This system arrangement makes it possible to standardize the manufacture of disks and reproduction apparatuses world wide, resulting in a reduction in production cost. In a disk 100, various types of information are recorded in different languages along with video information. A reproduction apparatus selects information in a given language from the reproduced information using a data string processing section 203, a system control section 204, and an operator section 205, and supplies the selected pieces of information to each of a video processing section 206, a subtitle decoder 211, and an audio processing section 213.

When an audio stream signal is transmitted, the bit stream information for determining the surround mode and special-use mode, including karaoke use, is sensed from the signal at a mode sensor. After the surround mode has been sensed, the audio data is converted by a decoder into a front left, front center, and front right main audio signals and a back left and back right surround audio signals in the surround mode, which are converted into analog signals and outputted to the corresponding speakers. When the special-use mode has been sensed, by using the central main audio signal of the front left, front center, and front right main audio signals and back left and back right surround audio signals converted at the decoder, a normally used first-type accompanying sound selectively made unused, for example, guide melody, is generated. In addition, by using the back left and back right surround audio signals, a normally unused second-type accompanying sound selectively used, for example, vocals, is generated. The first- and second-type accompanying sounds, together with the front left and front right main audio signals, are reproduced selectively. Consequently, a system that transmits surround sound using a plurality of channels can maintain compatibility with a surround system easily, when the plurality of channels are applied to special use, such as karaoke, not being restricted to surround use.

Growing community of inventors

Tokyo, Japan

Kenjiro Endoh