Abstract: A projection system includes a control module, a projection tube, an aiming driver, an observation device and an observation driver. The control module is configured to issue a first control command and a second control command. The aiming driver is electrically connected to the projection tube and configured to control, in response to the first control command, a projection viewing-line of the projection tube to be aligned with a calibration point. The observation driver is electrically connected to the observation device and configured to control, in response to the second control command, an observation viewing-line of the observation device to be aligned with the calibration point. The projection tube and the observation device are controlled asynchronously.

Abstract: A target tracking system includes an observation module, a dynamic tracking module, a control module and an aiming module. The observation module captures an observation frame including a tracked-object image of a tracked-object and an aiming point image and detects a distance between the observation module and the tracked-object. The dynamic tracking module analyzes the observation frame to obtain a lag correction vector between the aiming point image and the tracked-object image, and obtains a feed-forward correction vector according to the lag correction vector and the distance. The control module generates a control command representing the lag correction vector and a control command representing the feed-forward correction vector. The aiming module moves according to the control commands to control the aiming point image to align with the tracked-object image and control the aiming point image to lead the tracked-object image.

Abstract: A projection system includes a control module, a projection tube, an aiming driver, an observation device and an observation driver. The control module is configured to issue a first control command and a second control command. The aiming driver is electrically connected to the projection tube and configured to control, in response to the first control command, a projection viewing-line of the projection tube to be aligned with a calibration point. The observation driver is electrically connected to the observation device and configured to control, in response to the second control command, an observation viewing-line of the observation device to be aligned with the calibration point. The projection tube and the observation device are controlled asynchronously.

Abstract: A target tracking system includes an observation module, a dynamic tracking module, a control module and an aiming module. The observation module captures an observation frame including a tracked-object image of a tracked-object and an aiming point image and detects a distance between the observation module and the tracked-object. The dynamic tracking module analyzes the observation frame to obtain a lag correction vector between the aiming point image and the tracked-object image, and obtains a feed-forward correction vector according to the lag correction vector and the distance. The control module generates a control command representing the lag correction vector and a control command representing the feed-forward correction vector. The aiming module moves according to the control commands to control the aiming point image to align with the tracked-object image and control the aiming point image to lead the tracked-object image.

Abstract: A projection system includes a control module, a projection tube, an aiming driver, an observation device and an observation driver. The control module is configured to issue a first control command and a second control command. The aiming driver is electrically connected to the projection tube and configured to control, in response to the first control command, a projection viewing-line of the projection tube to be aligned with a calibration point. The observation driver is electrically connected to the observation device and configured to control, in response to the second control command, an observation viewing-line of the observation device to be aligned with the calibration point. The projection tube and the observation device are controlled asynchronously.

Abstract: The present invention relates to a disc data storage apparatus with a structure for preventing cracked discs from jetting out. The disc data storage apparatus has a tray for receiving a disc, a cover and a housing. The cover has a first portion and a second portion. The first portion is connected to a front flange of the housing, and the second portion is extended into the housing to form a barrier portion. When a disc cracks, the barrier portion is configured to stop and prevent the cracked disc from jetting out.

Abstract: A disc reading apparatus for preventing a cracked disc from jetting out is provided. The disc reading apparatus includes a disc tray and a housing. The disc tray includes a recess for receiving a disc, and the recess defines a recess flange. The housing includes an upper plate parallel to the disc tray, and the upper plate includes a barrier portion. The barrier portion further includes a plurality of bending boundaries and prevents a cracked disc from jetting out.

Abstract: An optical disc drive comprising a chassis, a tray, an optical pickup, a housing and an airflow guiding means is provided. The tray is movably disposed on the chassis, for carrying a disc into and out of the optical disc drive. The optical pickup reads data on the disc covering parts of the aperture through the aperture. The housing covers the chassis. The airflow guiding means has several passages. The airflow guiding means is disposed in the optical disc drive and relatively to the aperture of the tray, for diverting airflow around the rotating disc.

Abstract: When a disk drive is running, airflow is generated in the disk drive. The disk drive includes a tray and a housing. A plurality of through-holes are disposed on the tray, and the housing accommodates the tray therein. While airflow flows over the through-hole, noise is generated. Walls are formed on the rim of the through-hole to reduce this noise. A sponge for absorbing noise is adhered on the inner top portion of the housing for absorbing noise. As holes are located on the front end of the tray for guiding airflow, noise is reduced to a lower level.

Abstract: The present invention relates to a disc data storage apparatus with a structure for preventing cracked discs from jetting out. The disc data storage apparatus has a tray for receiving a disc, a cover and a housing. The cover has a first portion and a second portion. The first portion is connected to a front flange of the housing, and the second portion is extended into the housing to form a barrier portion. When a disc cracks, the barrier portion is configured to stop and prevent the cracked disc from jetting out.

Abstract: A disc reading apparatus for preventing a cracked disc from jetting out is provided. The disc reading apparatus includes a disc tray and a housing. The disc tray includes a recess for receiving a disc, and the recess defines a recess flange. The housing includes an upper plate parallel to the disc tray, and the upper plate includes a barrier portion. The barrier portion further includes a plurality of bending boundaries and prevents a cracked disc from jetting out.

Abstract: When a disk drive is running, airflow is generated in the disk drive. The disk drive includes a tray and a housing. A plurality of through-holes are disposed on the tray, and the housing accommodates the tray therein. While airflow flows over the through-hole, noise is generated. Walls are formed on the rim of the through-hole to reduce this noise. A sponge for absorbing noise is adhered on the inner top portion of the housing for absorbing noise. As holes are located on the front end of the tray for guiding airflow, noise is reduced to a lower level.