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1001results about How to "Inhibit output" patented technology

Device and method for generating encrypted data, for decrypting encrypted data and for generating re-signed data

InactiveUS20050135613A1High data rate compressionAudio/video qualitySecret communicationProgram/content distribution protectionEncryptionCopying
Devices and methods for generating encrypted data, for playing encrypted data and for re-signing originally signed encrypted data are based on the encrypted data, apart from the encrypted media information, to include the information required for decrypting the data and additionally a signature of who has generated the encrypted data. Thus the origin of the encrypted data can be traced back. In particular, passing on the encrypted data to a limited extent by the producer of the *encrypted data, for example to friends or acquaintances, is allowed, while only a mass reproduction of the encrypted data is considered as pirate copying. The pirate copier can, however, be found out with the help of the signature, wherein the signature is optionally protected by an embedded watermark signature. Because this is a concept wherein, when being used legally, only encrypted data occur, the unauthorized removal of the encryption is a statutory offence. The inventive concept makes possible finding the offender and at the same time considers ownerships of the operators with regard to a limited passing-on of media information, and thus has the potential of being accepted on the market.
Owner:FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV

Audio-video data synchronization method, video output device, audio output device, and audio-video output system

To provide an audio-video data synchronization method whereby an increase in the amount of control message transmission can be suppressed and the video output can be prevented from being interrupted. The audio-video data synchronization method includes: obtaining, by the audio output device, a first latency that is a period of time taken for the video output device to output the video, by receiving the display identification data that includes information indicating the first latency from the video output device when the indication of the connection validity status information changes from Invalid to Valid; adjusting, by the audio output device, timing of outputting the audio according to the first latency; obtaining, by the video output device, a second latency which is a period of time taken to output the video in the outputting; notifying the audio output device of the second latency by sending a control message from the video output device when the connection validity status information indicates Valid, the control message including information that indicates the second latency obtained in the obtaining of a second latency; and adjusting, by the audio output device, timing of outputting the audio according to the second latency.
Owner:PANASONIC CORP

Constant-temperature gas heater control method and constant-temperature gas heater

The invention provides a constant-temperature gas heater control method and a constant-temperature gas heater. The constant-temperature gas heater comprises a main control panel, a heat exchanger, a combuster, a water inlet pipe and a water outlet pipe, and further comprises a bypass pipe. The bypass pipe is connected with the water inlet pipe and the water outlet pipe, and is provided with a bypass water server. An outlet of the heat exchanger is provided with a first temperature sensor. An outlet of the water outlet pipe is provided with a second temperature sensor. The first temperature sensor, the second temperature sensor and the bypass water server are respectively in electric connection with the main control panel. The bypass pipe is arranged between the water inlet pipe and the water outlet pipe, the bypass pipe is provided with the bypass water server, and the main control panel controls the bypass water server to operate to adjust water flow of the bypass pipe according to temperature information collected by the first temperature sensor and the second temperature sensor, so the water outflowing temperature of the water outlet pipe is constant, the situation that hot water at exceedingly high temperature is output is avoided, the water outflowing temperature of the constant-temperature gas heater is constant, and comfort and safety of the constant-temperature gas heater are improved.
Owner:HAIER GRP CORP +2
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