Sony Corporation

Tadashi Kurita

Yoshihiro Ohta

Koji Hirosawa

Osamu Yamakami

Chieko Miyake

A reproduction apparatus and a content information reproduction method for simultaneous reproduction from two recording media and instantaneous audio switching. A frequency-division section and another frequency-division section each frequency-divide a master clock provided by an oscillation section at a predetermined frequency-division ratio so as to generate clocks. A hard disk uses the clocks coming from the frequency division section as a basis to reproduce audio/visual AV) data, and an optical disk uses the clocks coming from the frequency-division section as a basis to reproduce the AV data. In response to a user's instruction, when audio switching is performed for output to a speaker, a clock selection section switches a clock to be supplied to a D/A converter into the clock provided by the frequency-division section, or the clock provided by the frequency-division section.

Reproduction device and content information reproduction method

In a radio-integrated video tape recorder (VTR) which comprises a radio tuner section for receiving radio broadcast programs and for outputting an audio signal corresponding to a selected one of the received programs, a character generator for producing a video signal, a VTR section for recording the output audio signal from the radio tuner section and the video signal from the character generator in related portions of a recording tape, and a microprocessor for controlling the radio tuner section, character generator and VTR; such microprocessor is operative, in a radio broadcast program recording mode, to provide situation data to the character generator which determines the video signal recorded by the VTR section and which includes time data and receiving data identifying the selected one of the radio broadcast programs to which the audio signal recorded in the related portion of the tape corresponds.

Radio-integrated video tape recorder (VTR)

A receiver apparatus detects a received level from an AGC voltage relative to a received signal. For measuring the received level (a level outputted from an antenna), noise levels at predetermined frequencies higher and lower than the broadcast frequency band and a received signal level upon receiving a broadcast at an arbitrary channel are measured, and a received level corresponding to C/N at the received channel is calculated from the three measured values, thereby eliminating received level calculation differences among channels occurring when the received level is calculated on the basis of the AGC voltage.

Satellite broadcast receiver

A satellite broadcasting tuner with which satellite broadcasting of any channel can be enjoyed only by a channel selecting operation thereof whether or not broadcasting of the channel involves special signal processing. The tuner includes external input terminals for receiving video and aural signals from an external decoding apparatus, a changing over circuit for alternatively coupling video and aural signals from the external input terminals or video and aural signals from a signal processing circuit, which extracts such video and aural signals from an output of a demodulating circuit for a received satellite broadcasting signal, to external output terminals of the tuner to which an external monitor apparatus is connected, a memory for storing therein channels of satellite broadcasting which is broadcast in a specially processed signal form, and a controller for controlling the changing over circuit to couple, when one of the channels stored in the memory is to be received, the external decoding apparatus to the external monitor apparatus.

Satellite broadcasting tuner

A satellite broadcasting tuner by use of which high-definition television broadcasting of a satellite broadcasting channel can be received in a high quality. The satellite broadcasting tuner receives a satellite broadcasting channel selected by a channel selecting microcomputer, and when frame synchronizing data of the high-definition television system are detected from within audio data of the received channel, the reception frequency for the channel is fixed to receive the high-definition television broadcasting, but when no such frame synchronizing data are detected, an ordinary automatic fine tuning function operates to receive the satellite broadcasting channel. Changing over circuit is provided to take, when such frame synchronizing data are detected, a keyed automatic frequency control pulse signal into the channel selecting microcomputer from an external MUSE decoder to which video data of the received channel are transmitted so that the channel selecting microcomputer may perform a keyed automatic fine tuning operation.

Growing community of inventors

Kanagawa, Japan

Tadashi Kurita