Date: Thu, 18 Dec 1997 00:28:59 GMT Server: Apache/1.1.1 Content-type: text/html Set-Cookie: Apache=heart2635882404939233; path=/ Content-length: 6424 Last-modified: Tue, 12 Aug 1997 17:57:28 GMT Technology & Engineering

Technology
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Engineering


The Digital Home TheaterTM product consists of a dual front/rear projector. This projector allows the consumer the option to view both television and pre-recorded films on a large (60 inch or greater) screen or on the wall. Consumers may use this as a computer monitor with 800x600 SVGA. The projector is easily removed from its cabinet and can be transported out of the home or mounted upon a wall/ceiling. In addition, the system comes with a remote control, power cord, hookups for other devices (VCR's, Laser disc players, etc.), and manuals.

Mechanical Drawings of the Digital Home TheaterTM

The overall time for the average consumer to assemble the complete system is no more than 30 minutes. No special tools are required. All assembly and structural hardware is kept to a minimum. The overall weight does not exceed 200 lbs. The complete system is contained within three containers.

Rear Projection Cabinet

The rear projection cabinet is broken into two assemblies, the upper and lower assembly. It is attached with four turn fasteners.

Upper Cabinet Assembly

The upper cabinet consists of the collapsible viewing screen and mirror. The consumer opens the sub-assembly into an "A" frame shape. This is accomplished with a collapsible back. The "A" frame prevents the user access to the front of the mirror's surface and the rear of the viewing screen.

Lower Cabinet Assembly

The lower sub-assembly consists of the base plate and pedestal support structure. The base plate and pedestal prevents tipping of the unit when the projector is inserted and withdrawn.

Pedestal

The pedestal holds the drawer for the projector and contains an internal non-removable docking station. The docking station allows the users to insert the projector assembly. Connections for all power, video, audio, and SVGA cables are in the rear.

The customer will install the wide angle rear projection lens before placing the projector into the drawer's docking station.

The drawer stores the front projection lens and the external docking station.

The docking station routes all cabling/connections so that they are not accessible to the consumer. Any cabling within the docking station will cause no signal loss between the projector and the rear connections. All manual controls such as Power ON/OFF, Volume, and Channel are located on the projector itself and are accessible to the user from the front of the cabinet.

The base plate consists of stamped steel which acts as a counter-balance to prevent tipping of the unit when the projector is removed and inserted. It contains 4 turn fasteners for the upper cabinet assembly to mount to. The bottom of the base plate has six casters for ease in moving.

Docking Station

The Docking Station passes all of the Video, Audio, SVGA, and Power signals to the projector. The Docking Station quickly connects and disconnects to the projector. It will not degrade any of the Audio or Video signals. A tuner is located in the docking station.

Electrical Connections

The pedestal/docking station and external/docking station contains the following electronic connections:

Connector TypeI/OName
RCA JackIAudio Right
RCA JackIAudio Left
RCA JackOAudio Right
RCA JackOAudio Left
RF-ConnectorIRF NTSC
RCA JackOComposite Video
RCA JackIComposite Video
4 Pin Mini-DinIS-Video
High Density Submini D-TypeISVGA
Power CordIPower


Back View of Docking Station

Projector

The projector consists of a light engine and electronics contained within an enclosure plus two lens systems. The projector has the capability of operating as a stand-alone unit for front projection or within a rear projection cabinet. In order to accomplish this, two lens systems have been developed, i.e., one for the front and one for the rear operating mode.

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