Sony Corporation

Ryuichiro Hisamatsu

Takamichi Mitsuhashi

Katsutoshi Sakao

Tadashi Saito

Yasuhisa Nakajima

Hiroshige Okamoto

A data transmission device transmits a data broadcast using a narrow unused broadcasting band in a digital broadcast, and to record the data broadcast, which has been received, on a receiving side so that the receiving side can play back the data broadcast after a data stream is totally recorded. The transmission device generates a first data stream, which is recorded on a recording medium on a receiving side, and a second data stream including audio and video data, which is transmitted as a broadcasting program. The transmission device multiplexes the first and the second data streams and then transmits the multiplexed data stream. The transmission of the multiplexed data stream is controlled so that a transmission rate for the multiplexed data stream does not exceed the maximum transmission rate, and so that a transmission rate for the first data stream becomes lower than that for the second data stream. A receiving device records the first data stream on the recording medium, and permits the first data stream to be played back for use after the transmission completes.

Recording device, playback device, recording method and playback method

Data transmission device, data receiving device, data transmitting method, data receiving method, recording device, playback device, recording method, and playback method

A business management method, a business management apparatus and a data broadcast delivery method are disclosed which allows contents to be broadcast over an unused bandwidth in satellite broadcasting so that the contents are stored and later reproduced as needed for quick access to a desired destination recorded in the contents. A data broadcast is assigned to an unused broadcast bandwidth over a broadcast band for transmitting programs in satellite broadcasting. The data broadcast over the unused bandwidth are stored onto a storage medium in a TV set. The stored data contents are sorted out by category for selective viewing by operation of the TV set. If the selected content offers e-commerce, a virtual shop handing desired offerings is accessed as per the content.

Business management method, business management apparatus and data broadcast delivery method

Growing community of inventors

Kanagawa, Japan

Ryuichiro Hisamatsu