Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Hiroaki Hayashi

Hiroyuki Matsumoto

Kazunori Hayashi

Ryota Fujii

Toshihiko Takahashi

Shinichi Konishi

Youichi Ogura

Teruhiko Izumi

Dai Ichiryu

A recording device records a video and an imaging time, and a voice. Based on the voice, a sound parameter calculator calculates a sound parameter for specifying magnitude of the voice in a monitoring area at the imaging time for each of pixels and for each of certain times. A sound parameter storage unit stores the sound parameter. A sound parameter display controller superimposes a voice heat map on a captured image of the monitoring area and displays the superimposed image on a monitor. At this time, the sound parameter display controller displays the voice heat map based on a cumulative time value of magnitude of the voice, according to designation of a time range.

Voice monitoring system and voice monitoring method

An optical disc recording/playback apparatus is provided with a first AD converterfor shaping a push-pull signaldetected from an optical disc mediumby a light difference signal shaping circuit, and converting the signal into a digital sampling signalusing a sampling clocksynchronized with a channel frequency; a series of means for detecting wobble amplitude informationduring recording from the digital sampling signal; a series of means for detecting address polarity informationand address position information during playback; and a recording laser power control circuitfor controlling a recording laser power to a power suited for recording on the basis of the wobble amplitude information.

Optical disc recording/playback apparatus

Growing community of inventors

Fukuoka, Japan

Hiroaki Hayashi