Projector, lamp lighting circuit and lamp lighting control method
First Claim
1. A projector which uses as a light source a selected one of a plurality of types of discharge lamps having different specifications, comprising:
- a lamp socket on which a selected discharge lamp is mounted;
an identification unit by which type information of the discharge lamp mounted on the lamp socket is identified;
a lamp lighting unit which is provided with a plurality of control sequences by lamp type to allow each discharge lamp to be lit according to specifications that conform to its type and lights the discharge lamp mounted on the lamp socket according to a control sequence that conforms to its type; and
a control unit which instructs the lamp lighting unit to select a control sequence corresponding to the type information identified by the identification unit.
1 Assignment
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Accused Products
Abstract
A lamp lighting device is arranged such that the optimum specifications of discharge lamps that may be mounted are integrated or entered in advance into a control circuit and the type of a discharge lamp mounted is manually or automatically presented to a microcomputer. This allows any of the discharge lamps to be driven under the optimum conditions at all times. As a result, lamp makers and lamp power can be selected relatively freely, making it possible to select discharge lamps by purpose. Furthermore, the cost, color, outgoing luminous flux and noise caused by a cooling fan can be set to user'"'"'s better likings.
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Citations
20 Claims
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1. A projector which uses as a light source a selected one of a plurality of types of discharge lamps having different specifications, comprising:
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a lamp socket on which a selected discharge lamp is mounted;
an identification unit by which type information of the discharge lamp mounted on the lamp socket is identified;
a lamp lighting unit which is provided with a plurality of control sequences by lamp type to allow each discharge lamp to be lit according to specifications that conform to its type and lights the discharge lamp mounted on the lamp socket according to a control sequence that conforms to its type; and
a control unit which instructs the lamp lighting unit to select a control sequence corresponding to the type information identified by the identification unit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A lamp lighting device which, at the time when a discharge lamp is mounted, is provided with type information representing specifications of the lamp, comprising:
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a storage unit which stores a plurality of control sequences by lamp type to allow the discharge lamp to be lit according to specifications that conform to its type; and
a driving unit which reads a corresponding one of the control sequences from the storage unit in response to the type information of the discharge lamp and lights it according to the read control sequence. - View Dependent Claims (8)
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9. A control method for use with a projector adapted to selectively use as a light source a plurality of types of discharge lamps having different specifications, the method comprising the steps of:
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preparing a plurality of control sequences by lamp type to allow a discharge lamp to be lit according to specifications that conform to its type;
identifying type information of a discharge lamp when it is mounted;
selecting a control sequence corresponding to the type information entered from the plurality of control sequences; and
lighting the discharge lamp mounted according to the selected control sequence. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A projector which uses as a light source a selected one of a plurality of types of discharge lamps having different specifications, comprising:
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a lamp socket on which a selected discharge lamp is mounted;
identification means for identifying type information of the discharge lamp mounted on the lamp socket;
lamp lighting means, provided with a plurality of control sequences by lamp type to allow each discharge lamp to be lit according to specifications that conform to its type, for lighting a discharge lamp mounted on the lamp socket according to a control sequence that conforms to its type; and
control means for instructing the lamp lighting means to turn on or off the discharge lamp mounted and select a control sequence corresponding to the type information identified through the identification means. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification