Abstract: An image display device is for displaying an image including a user in, and comprises: a display processing unit displaying an image within a user's visual field display range; and a processor controlling the entire operation including a display operation on the display processing unit. The processor controls the display processing unit such that, in a state where information is displayed at a low content level within a visual field display range by control of the display processing unit, when an observation point which a user observes closely stays within a prescribed display range for a prescribed period of time, the vicinity of the observation point is displayed as information of a high content level, whereas when the observation point has deviated from the location of said information of the high content level, the vicinity of the observation point is returned to the information display at the low content level.

Abstract: An information display device comprises a communication device connected to a communication network; a display; and a processor connected to each of the communication device and the display. The processor is configured to: calculate an information fake level indicating a level of credibility of display information received by the communication device via the communication network and displayed on the display based on a characteristic relating to the credibility on the display information; calculate a user-specific fake level coefficient indicating a level in which a user who operates the information display device is able to judge accuracy of the credibility of the display information based on an index representing how the user tends to judge the credibility; correct the information fake level using the user-specific fake level coefficient to calculate a user-specific fake level; and display the user-specific fake level on the display.

Abstract: A watching monitoring apparatus includes a camera and a home server. The camera images a watching space where a watched person exists. The home server includes a person detector detecting a person from a captured image by the camera, and classifies the detected person into face and body parts, a processing-drawing part performing a processing-drawing process for the body part except for the face part, an image synthesizer that creates a synthesized image of an image subjected to the processing-drawing process and the captured image, and a network part through which the synthesized image is transmitted to a display terminal of a watching person. The apparatus further includes face information registration data in which face information of the watched person is registered, and when a detected person is not registered in the face information registration data, the processing-drawing process is not performed for the person.

Abstract: In an optical disc device, a way of canceling a lens shift due to an electric offset of an output of a tracking actuator driving circuit is desired. A tracking servo control circuit contains a first operation mode for setting an output current of the tracking actuator driving circuit to generally zero and a second operation mode for supplying a predetermined potential to the input. An average potential of a push-pull signal detected in the first operation mode is acquired. An object lens is moved by a predetermined amount in both radial directions by changing a potential supplied in the second mode to acquire correlative relationship between average potential of a push-pull signal relative to a lens movement amount and the supplied potential. An offset amount is acquired from the potential and the correlative relationship to cancel the offset.

Abstract: In an optical disc apparatus, when a signal to be generated corresponding to an amount of reflected light from an optical disc has a signal level below a threshold level for a period exceeding a reference period, a controller controls an actuator to move an objective lens in a direction such that a distance from the optical disc surface to the objective lens increases. The reference period may be set based on a type of the optical disc and a recording or reproducing speed of the optical disc, or based on a surface deflection of the optical disc.

Abstract: In an optical disc device, a way of canceling a lens shift due to an electric offset of an output of a tracking actuator driving circuit is desired. A tracking servo control circuit contains a first operation mode for setting an output current of the tracking actuator driving circuit to generally zero and a second operation mode for supplying a predetermined potential to the input. An average potential of a push-pull signal detected in the first operation mode is acquired. An object lens is moved by a predetermined amount in both radial directions by changing a potential supplied in the second mode to acquire correlative relationship between average potential of a push-pull signal relative to a lens movement amount and the supplied potential. An offset amount is acquired from the potential and the correlative relationship to cancel the offset.

Abstract: In an optical disc apparatus, a level of a first signal as a total signal corresponding to an amount of reflected light from an optical disc surface is compared to a threshold that an objective lens can maintain a focus state. Based on a result of the comparison, a second signal is generated having a first portion corresponding to the focus state of the objective lens and a second portion corresponding to a defocus state thereof. Then, it is determined whether sequential continuous time of the second portion of the second signal exceeds a reference waiting time. When the sequential continuous time exceeds the reference waiting time, the objective lens is made to back off by an actuator drive, as defocusing occurs.

Abstract: A helical scanning type magnetic recording and reproducing apparatus records a signal representing recording conditions on a magnetic tape when a recording is effected thereon, together with a PCM audio signal. At the time of reproduction, reproducing conditions are controlled so as to be the same as the recording conditions on the basis of the signal representing recording conditions reproduced.

Abstract: An audio signal transmission system having a noise reduction circuit, which includes a transmission medium such as a magnetic tape to be used to transmit a digital signal converted from an input audio signal and thereafter to output the audio signal reproduced from the digital signal, a digital signal transmitter having a pulse-code modulator and demodulator (MODEM). The noise reduction circuit includes a compressor for compressing the dynamic range of the input audio signal according to the detection level obtained by detecting at least the high-frequency components thereof in order to supply the output from the compression to the digital signal transmitter and an expander for expanding the dynamic range of the demodulated signal from the transmitter according to the detection level of at least the high-frequency components thereof.