CN101034245A - Projector with start-up prompting sound - Google Patents
Projector with start-up prompting sound Download PDFInfo
- Publication number
- CN101034245A CN101034245A CN 200610024434 CN200610024434A CN101034245A CN 101034245 A CN101034245 A CN 101034245A CN 200610024434 CN200610024434 CN 200610024434 CN 200610024434 A CN200610024434 A CN 200610024434A CN 101034245 A CN101034245 A CN 101034245A
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- projector
- prompting sound
- music generator
- triode amplifier
- circuit
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Abstract
The invention provides a projector with startup prompt tone, comprising: casing as well as light engine, circuit board, lighter, light source and heat radiation mechanism arranged in the casing, and also comprising a startup prompt tone circuit. As compared with the existing techniques, it can send out prompt tone to an operator at startup, more human to operate and able to avoid user's misoperation and damage caused by this.
Description
Technical field
The present invention relates to a kind of projector, relate in particular to a kind of projector with start-up prompting sound.
Background technology
Projector is widely used in education, commerce and the family.Common projector generally comprises a housing and is arranged on the interior photo engine of housing, circuit board, apparatus for lighting up, light source and corresponding cooling mechanism.According to what of camera lens used in the photo engine, projector can be divided into single-lens projector and tri-lens projector again.Generally all be that the white light that earlier a light source is produced is isolated red, green, blue three coloured light in design, by three liquid crystal light valves three coloured light are modulated respectively, three coloured light after the modulation are handled with diverse ways according to different mining single-lens or the three-lens design.In single-lens projector, be with closing that color component is synthesized and by the single lens projection imaging with three coloured light.In tri-lens projector, be that three coloured light are projected to imaging on the same screen via three different camera lenses respectively.Wherein single-lens projector has the advantages that volume is little, be convenient for carrying, but its back focal length is longer, thereby limited ability at the bigger picture of short distance inner projection, and optical modules such as employed camera lens and spectroscope are very high to the requirement of quality, precision, cause cost higher.And tri-lens projector can project big picture in than short distance, and picture brightness and contrast all improve a lot than single-lens projector.
Projector can be placed on the desktop use or furred ceiling uses, no matter adopt the sort of mode, projector all needs in start process through the built in self testing process, whether detect radiator fan and turn round, after radiator fan worked well, projector just started the process of lighting a lamp, when weather is cold, may repeatedly light a lamp and just can light, therefore press the start button and can see projection image to the user from the user, need be greater than 1 minute time.In this process, the user can think that projector is not activated by mistake owing to do not observe image, therefore repeatedly presses button, causes maloperation.Particularly when projector's furred ceiling used, the user was more prone to cause maloperation owing to observe inconvenience, damaged projector.
Summary of the invention
Purpose of the present invention provides a kind of projector with start-up prompting sound exactly in order to address the above problem.
The object of the present invention is achieved like this: a kind of projector with start-up prompting sound, and comprise housing and be arranged on housing interior photo engine, circuit board, apparatus for lighting up, light source and cooling mechanism, it is characterized in that described projector also comprises the start-up prompting sound circuit.
Described start-up prompting sound circuit comprises CPU, music generator, triode amplifier, current-limiting resistance, power supply and loudspeaker.
CPU is connected with music generator in the described start-up prompting sound circuit, send starting-up signal to music generator, music generator is connected with triode amplifier through current-limiting resistance, the triode amplifier collector connects loudspeaker, the signal that music generator sends amplifies the rear drive speaker operation through triode amplifier, and triode amplifier and music generator are powered by power supply.
Described music generator can be the TE1301 chip.
Described start-up prompting sound circuit is connected with main circuit board by the plug mode as standalone module, is selectable unit (SU).
The projector of band start-up prompting sound of the present invention is owing to adopted the start-up prompting sound circuit in projector, when starting shooting, projector can send prompt tone automatically to the operator, operate hommization more, the damage that can avoid user's maloperation and cause thus simultaneously to projector
Description of drawings
Fig. 1 is a kind of projector architecture synoptic diagram with start-up prompting sound of the present invention.
Fig. 2 is the circuit theory diagrams of start-up prompting sound circuit of the present invention.
Embodiment
Referring to Fig. 1, a kind of projector with start-up prompting sound of the present invention comprises housing 1 and is arranged on housing interior photo engine 2, circuit board 3, apparatus for lighting up 7, light source 4 and radiator fan 5 that described projector also comprises start-up prompting sound circuit 6.
Referring to Fig. 2, start-up prompting sound circuit 6 of the present invention comprises CPU1 ', music generator 2 ', triode amplifier 4 ', current-limiting resistance 3 ', power supply 6 ' and loudspeaker 5 '.CPU1 ' is connected with music generator 2 ' in the described start-up prompting sound circuit 6, send starting-up signal to music generator 2 ', music generator 2 ' is connected with 3 ' triode amplifier 4 ' through current-limiting resistance, triode amplifier 4 ' collector connects loudspeaker 5 ', the signal that music generator 3 ' sends amplifies the 5 ' work of rear drive loudspeaker through triode amplifier 4 ', and triode amplifier 4 ' and music generator 3 ' are by power supply 6 ' power supply.Described music generator 3 ' can adopt the TE1301 chip.
Described start-up prompting sound circuit 6 is connected with main circuit board 3 by the plug mode as standalone module, is projector's selectable unit (SU).
Claims (5)
1. the projector with start-up prompting sound comprises housing and is arranged on housing interior photo engine, circuit board, apparatus for lighting up, light source and cooling mechanism, and it is characterized in that: described projector also comprises the start-up prompting sound circuit.
2. a kind of projector with start-up prompting sound according to claim 1 is characterized in that: described start-up prompting sound circuit comprises CPU, music generator, triode amplifier, current-limiting resistance, power supply and loudspeaker.
3. a kind of projector according to claim 1 and 2 with start-up prompting sound, it is characterized in that: CPU is connected with music generator in the described start-up prompting sound circuit, send starting-up signal to music generator, music generator is connected with triode amplifier through current-limiting resistance, the triode amplifier collector connects loudspeaker, the signal that music generator sends amplifies the rear drive speaker operation through triode amplifier, and triode amplifier and music generator are powered by power supply.
4. a kind of projector with start-up prompting sound according to claim 2 is characterized in that: described music generator can be the TE1301 chip.
5. a kind of projector with start-up prompting sound according to claim 1 is characterized in that: described start-up prompting sound circuit is connected with main circuit board by the plug mode as the independent circuits module, is projector's selectable unit (SU).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610024434 CN101034245A (en) | 2006-03-07 | 2006-03-07 | Projector with start-up prompting sound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610024434 CN101034245A (en) | 2006-03-07 | 2006-03-07 | Projector with start-up prompting sound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101034245A true CN101034245A (en) | 2007-09-12 |
Family
ID=38730851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610024434 Pending CN101034245A (en) | 2006-03-07 | 2006-03-07 | Projector with start-up prompting sound |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101034245A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532303A (en) * | 2012-07-06 | 2014-01-22 | 界首市达尔玛电动车有限公司 | Temperature-sensing forced-air-cooling electric-vehicle motor |
| CN106021050A (en) * | 2016-05-20 | 2016-10-12 | 海信集团有限公司 | Boot operation method of laser projection device |
-
2006
- 2006-03-07 CN CN 200610024434 patent/CN101034245A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103532303A (en) * | 2012-07-06 | 2014-01-22 | 界首市达尔玛电动车有限公司 | Temperature-sensing forced-air-cooling electric-vehicle motor |
| CN106021050A (en) * | 2016-05-20 | 2016-10-12 | 海信集团有限公司 | Boot operation method of laser projection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |