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Projection display apparatus

A technology for display devices and projection surfaces, which is applied in projection devices, printing devices, digital output to display devices, etc., can solve the problems of high circuit part prices and rising overall cost of projectors, and achieve the effect of suppressing cost increases

Inactive Publication Date: 2011-04-27
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high price of the circuit part, the overall cost of the projector has increased

Method used

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  • Projection display apparatus
  • Projection display apparatus
  • Projection display apparatus

Examples

Experimental program
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Effect test

Deformed example 1

[0093] In the above-described embodiment, a configuration is adopted in which whether to use the LAN signal processing circuit section 402 or to use the function expansion unit 50 is selected depending on whether or not the function expansion unit 50 is connected. On the other hand, in this modified example, the user selects whether to use the LAN signal processing circuit unit 402 or the function expansion unit 50 by performing an input operation using the operation unit 104 or the remote controller.

[0094] Figure 6 (a) is a flowchart showing the setting process of the communication function according to Modification 1. in addition, Figure 6 (b) is a figure which shows the setting data corresponding to the setting item concerning the modification 1. FIG. and then, Figure 7 It is a figure which shows the display example of the communication function setting screen which concerns on the modification 1.

[0095] When the user performs a key operation to display the comm...

change example 2

[0102] When power is supplied to the projector, the control unit 407 and other necessary circuit units are activated, and the projector is in a standby state. Then, when the power switch on the operation unit 104 or the remote controller is pressed, the operation starts, the lamp or the liquid crystal panel is driven, and the projection of an image starts.

[0103] In Modification 1 described above, it is not possible to set the communication function by distinguishing between the time of standby and the time of operation.

[0104] However, the type of signal communicated may differ between standby and operation. For example, in the case of a usage method in which video signals are transmitted to a projector via a LAN, video signals, control signals for remote operation, and information signals related to the status of the projector can be communicated during operation. Video signal communication cannot be performed.

[0105] Therefore, in Modification 2, a configuration is ...

change example 3

[0120] Figure 11 It is a flowchart showing the setting process of the communication function according to the modified example 3.

[0121]In the above-mentioned modified example 1 and modified example 2, the configuration in which the setting of the communication function is performed only by an input operation is adopted, but in this modified example, the setting based on the presence or absence of the connection of the function expansion unit 50 is first performed, and then Setting can be changed by input operation.

[0122] That is, the control unit 407 first determines whether or not the function expansion unit 50 is connected (S231). Then, if the function expansion unit 50 is not connected (S231: NO), setting to use the LAN signal processing circuit section 402 is performed. On the other hand, if the function expansion unit 50 is connected (S231: YES), setting to use the LAN signal processing circuit section 402 is performed.

[0123] When the user wants to change the...

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Abstract

A projection display device includes a first communication processing section for performing communications over a network; an interface that is connected to a communication device having a second communication processing section with more advanced processing capability than that of the first communication processing section; and a selecting section that selects the first communication processing section or the second communication processing section disposed in the communication device, for use in communications with the network.

Description

technical field [0001] The present invention relates to a projection display device that modulates light from a light source and projects it onto a surface to be projected. Background technique [0002] Conventionally, a projection type display device (hereinafter referred to as "projector") that can be connected to a network has been developed. For example, in the projector described in Patent Document 1, it is possible to project a video signal received from an external device (such as a personal computer) via a network. [0003] In this case, the projector requires a circuit unit for extracting and processing digital data corresponding to the video signal from the received communication signal. Since the price of the circuit part is high, the overall cost of the projector is increased. [0004] In addition, as a method of connecting the projector to the network, a method for the purpose of remote control is considered. In this case, the projector only needs to be able ...

Claims

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Application Information

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IPC IPC(8): G03B29/00G06F3/14H04N5/74G03B21/00
CPCH04N9/3179G03B21/14G03B33/12H04N9/3197G03B21/208
Inventor 堤康一小谷和范
Owner SANYO ELECTRIC CO LTD
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