Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Sony Corporation

Panasonic Intellectual Property Management Co., Ltd.

Naoki Ejima

Akihisa Kawamura

Sho Murakoshi

Hiroshige Okamoto

Toshiroh Nishio

Hidekazu Suzuki

Tetsuya Hiroe

Tatsuya Adachi

Kazuya Iwata

Masatoshi Shimbo

Yasushi Nakajima

Takafumi Ueno

Kiyotaka Nagai

Masataka Nikaido

Shuhei Sasakura

Masaharu Matsumoto

Kazutaka Abe

Seiji Nakamura

Tsuyoshi Okada

Isao Kato

Kenji Muraki

Kinji Kawamoto

Yoshihisa Inagaki

Akira Sobajima

Keiko Tanaka

Tetsuya c/o Sony Corporation Hiroe

Hiroshige c/o Sony Corporation Okamoto

Sho c/o Sony Corporation Murakoshi

A content transmitting apparatus and the like which execute copy control of content more securely than conventional, and can count copy number correctly according to the situation, even in the case where content transfer is interrupted are provided. The content reproducing apparatus for transmitting content that is digital copyrighted work including a plurality of content blocks includes: the content reproducing unit which reads out content and the like from the DVD; the control unit which repeats, for each of the plurality of content blocks, transmitting in parallel with the content blocks, the copy control information indicating copy permission of the content, the content identification information identifying content, and the content status information indicating status of the content blocks in the overall content; the data building unit; the transmission unit; and the like.

Content transmitting apparatus for transmitting content with copy control information, content identification information and content status information

A repeater is to be provided between a source device and a sink device and be used in a Lip-sync correction system that transmits a video signal and an audio signal from the source device to the sink device through a HDMI (High Definition Multimedia Interface) transmission path and reproduces the video signal and the audio signal in synchronous with them on the sink device. A communication from the source device to the sink device is defined as a downstream communication, and a communication from the sink device to the source device is defined as a upstream communication. The repeater includes a processor that receives the video signal and the audio signal through the upstream communication and the downstream communication and processes the received video signal and the received audio signal. The processor corrects deviation between the video signal and the audio signal.

Repeater being utilized between a source and sink device for Lip-syncing in an HDMI system

Repeater being utilized between a source and sink device for lip-syncing in an HDMI system

A digital broadcast transmitting device is described that includes a packet generation unit configured to generate packetized elementary stream (PES) data by converting an inputted voice signal into an encoded voice signal and generating a voice stream packet including the encoded voice signal; a descriptor updating unit configured to update a component descriptor to include a component type identification (ID) and a change reservation ID, the component type ID indicating an encoding format of the encoded voice signal is MPEG surround format and the change reservation ID indicating a change of a format of the encoded voice signal to the MPEG surround format; a packetizing unit configured to generate section data by packetizing the component descriptor; a multiplexing unit configured to multiplex the PES data and the section data; and a modulation unit configured to modulate and transmit multiplexed data acquired from the multiplexing unit.

Identifying an encoding format of an encoded voice signal

A video signal and an audio signal are transmitted from a source device to a sink device in conformity with respective predetermined interfaces through respective transmission channels. The respective interfaces include bidirectional interface such as an HDMI and an IEEE1394. A controller acquires delay information (TLv) representing the total delay time of the devices connected to the transmission channels conforming to the bidirectional interface and corrects the difference in reproduction time between the video and audio signals by using the acquired delay information (TLv).

Lip-sync correcting device and lip-sync correcting method

A content transmitting apparatus and the like which execute copy control of content more securely than conventional, and can count copy number correctly according to the situation, even in the case where content transfer is interrupted are provided. The content reproducing apparatusfor transmitting content that is digital copyrighted work including a plurality of content blocks comprises: the content reproducing unitwhich reads out content and the like from the DVD; the control unitwhich repeats, for each of the plurality of content blocks, transmitting in parallel with the content blocks, the copy control information indicating copy permission of the content, the content identification information identifying content, and the content status information indicating status of the content blocks in the overall content; the data building unit; the transmission unit; and the like.

As shown in FIG., a data receiver receives video data and audio data together with a frequency division parameter N that depends on the pixel clock of the video data and the sampling frequency of the audio data, and a count value CTS that is obtained by counting the period of the audio clock that has been subjected to frequency division by the frequency division parameter N, with the pixel clock, which are transmitted from a data transmitter, and subjects the pixel clock to frequency division by the count value CTS, phase-control the divided clock (s) in accordance with a phase comparison clock (s) that is obtained by dividing an audio clock (s) oscillated from a VCO () by the frequency division parameter N, thereby generating an audio clock (s). Accordingly, the data transmitter and the data receiver can satisfactorily implement multiplexing of audio data and video data, and transmission of the multiplexed data using an existing DVI cable, with a simple structure.

Data transmitter and data receiver

A recording/reproduction device that prevents content and related content from being reproduced simultaneously. The recording/reproducing device () includes a recording area (), a communication processing unit () outputting the related content having details identical to details of the content recorded onto the recording area () into an external recording medium (), and an encoding/decoding processing unit () obtaining unique information of the external recording medium (). The encoding/decoding processing unit () changes a state of content recorded in the recording area () into an irreproducible state unless the unique information of the content is used, when the related content is outputted to the external recording medium (), and then reproduces the content recorded in the recording area () using the unique information, when the encoding/decoding processing unit () obtains the unique information.

Recording/reproduction device

Method for transmitting content with copy control information, content identification information and content status information

A wireless device, which employs the method and function of removing the coupling and correlation of antennas, picks up the noise components released from inside the device together with the current induced to a second antenna. The wireless device then controls the amplitude and phase of the pickup signal so as to optimize the reception quality signal for received signal, and additively combines it with the signal received from the first antenna. The coupled component, which is induced from the first antenna to the second antenna, is cancelled together with the noise component, thus mainly cancelling the largest cause of desensitization. This results in the maximization of the receiving sensitivity.

Method for removing the coupling and correlation of antennas, and wireless device having the function of removing the coupling and correlation of antennas

Data transmission device and data reception device

Digital audio data which have a predetermined packet structure are divided into units including a predetermined number of bits; each unit of the divided digital audio data is converted into specific data to be encoded; the encoded data are arranged in blanking intervals of video data; the digital audio data are transmitted as well as the video data using a transmission line for the video data, and the video data and the audio data may be simultaneously and favorably transmitted, adopting an existing video-data transmission format such as the DVI standard.

Transmission method, transmission system, sending device and reception device

A sub-scrambling/descrambling method and device enhances the degree of scrambling of linear PCM data. Data is delimited at predetermined times, and the minimum value of a run is found and used as annex information. The run part is replaced with an arbitrary irreversible random data string, which is processed by a main scrambling device to generate transmission data. After main descrambling of the transmission data, a descrambling device takes out the annex Information and replaces the random data string with a predetermined '0' or '1' run according to the annex information. Thus, the degree of scrambling of linear PCM data is enhanced as much or more than compressed video data.

Sub-scrambling/descrambling method and sub-scrambling/descrambling device

An electronic apparatus reads a digital data stream including a video signal and/or an audio signal outputted from an external apparatus according to a transmission clock different from a clock for the data stream, and outputs the video signal and/or audio signal without causing any discontinuity. The electronic apparatus includes a sample rate converter that rate-converts a predetermined volume of the audio signal in synchronization with a constant sampling clock, and changes a number of samples to be outputted, based on a data volume of an audio signal outputted by the electronic apparatus and a data volume of an audio signal transmitted from the external apparatus or transmittable from the external apparatus to the electronic apparatus.

Electronic apparatus and control method thereof using sample rate converter

This invention provides a data transmission method and a data receiving method which enable audio data to be multiplexed into video data and be transmitted using a DVI standard cable or the like satisfactorily with a simple configuration. From a data transmitting end, a superimposed video/audio data signal in which audio data are superimposed over a video blanking interval of video data in superimposition timing that is generated using a video blank sync signal and a pixel clock, are transmitted to a data receiving end through the DVI cable, together with the video blank sync signal and the pixel clock. On the data receiving end, a timing signal for extracting the audio data from the superimposed video/audio data signal is generated using the transmitted video blank sync signal and pixel clock, and the superimposed video/audio data signal is separated into video data and audio data using the generated timing signal, as well as the digital audio data are converted into an analog audio signal using an audio clock that is generated by dividing the frequency of the pixel clock.

Growing community of inventors

Osaka, Japan

Naoki Ejima