JP2015154345A - projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projector that can reduce a burden on a user in the work of switching of a video input terminal.SOLUTION: A projector includes: a video imaging unit 16 that photographs the state of connection of a cable terminal by a user; a comparison and determination unit 17 that determines if the operation by the user is an operation to connect a cable; a storage unit 18 that stores in advance the shape of the cable terminal; detection means for detecting if the shape of the cable terminal is captured in the photographed video; and input switching means for automatically switching the input when the shape of the cable terminal has been detected and the operation of the user is the operation to connect the cable.

Description

  The present invention relates to a projector that enlarges and displays an image of a video signal on a screen.

  In the projector, the user switches video input terminals such as a computer, HDMI (registered trademark), and video, selects a video input terminal of the target device, and performs video display. However, there is a problem that the user needs to switch the video input terminal and select the video signal source until the user matches the video signal source to be displayed.

  As a means to solve this problem, the presence or absence of a plurality of video signals supplied to a plurality of video input terminals is detected, and based on the detection result, a video signal is supplied to a video input terminal to which no video signal is supplied. There is already known a technology that does not switch over as a supply destination.

  Patent Document 1 detects the presence or absence of a plurality of video signals supplied to a plurality of video input terminals for the purpose of reducing user switching work, and no video signal is supplied based on the detection result. A method is disclosed in which the video input terminal is not switched as the video signal supply destination.

  However, in the technology for switching the video input terminal based on the video detection results so far and the technology disclosed in Patent Document 1, the video input signal cannot be switched unless the video input signal is input after all. There was a problem that the switching work was made to be performed by the user.

  SUMMARY An advantage of some aspects of the invention is that it provides a projector that can reduce a video input terminal switching operation by a user.

  In order to achieve this object, the present invention has the following features.

  The projector according to the present invention stores in advance an imaging unit that images a connection state of a cable terminal by a user, a determination unit that determines whether the user is attempting to connect a cable, and a cable terminal shape in advance. A storage means, a detection means for detecting whether or not the cable terminal shape is present in the captured video, and when the cable terminal shape is detected and the user is attempting to connect the cable automatically Input switching means for switching input.

  ADVANTAGE OF THE INVENTION According to this invention, the switching operation | work of the video input terminal by a user can be reduced.

It is a block diagram which shows the structure of the projector which concerns on this embodiment. It is a figure which shows the structure of each part of the projector 1 which concerns on this embodiment. It is a flowchart which shows the switching operation | work of a video input terminal.

  Hereinafter, the present embodiment will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a projector 1 according to the present embodiment. The projector 1 includes a video input terminal unit 2, a video / audio processing unit 3, a main control unit 4, a lamp driving unit 10, an optical control unit 11, and an operation control unit 14.

  The video input terminal unit 2 is connected to various devices of the user. There are an HDMI (High-Definition Multimedia Interface) terminal connected to an output terminal of an AV device by a connection cable, a RGB terminal of a computer connected to a video terminal and an output terminal of a computer device by a connection cable, and the like.

  The video / audio processing unit 3 converts video data input from each device into RGB digital video data and transfers the converted data to the main control unit 4. In addition, audio data input from the video input terminal unit 2 and the main control unit 4 is D / A converted and output to the audio output unit 5 such as a speaker.

  The main control unit 4 includes a CPU (Central Processing Unit) 6 that is a main processor, an SDRAM (Synchronous Dynamic Random Access Memory) 7 that is a memory device that temporarily stores data in each process, a control program, and the like. A ROM (Read Only Memory) 8 and a NVRAM (Non Volatile Random Access Memory) 9 are stored.

  The NVRAM 9 is a data holding memory device that records setting information and the like even when the power is turned off. The main control unit 4 controls the lamp driving unit 10 and the optical control unit 11 to display the RGB video data transferred from the video / audio processing unit 3.

The lamp driving unit 10 and the optical control unit 11 control the lamp 12 and the optical unit 13 by the control from the main control unit 4. The optical unit 13 includes a liquid crystal light valve, a color wheel, a DMD (Digital Micromirror Device), and the like. Further, there are a mirror for reflecting image light for displaying an image on a screen, a lens for enlarging / reducing, and the like.
The optical control unit 11 includes drive control of a liquid crystal light valve, drive control of a color wheel and DMD, and the like. The lamp 12 includes an LED and a laser in addition to the lamp 12.

  The operation control unit 14 includes a keyboard having a plurality of keys and an LED for displaying a status. The keyboard is provided with a power key for turning on / off the projector 1, a menu key for performing various settings, a ↓ key, an ↑ key, a ← key, a → key, a determination key, an input key for switching an input signal, and the like. ing. Video data at the time of various settings and input switching is formed by OSD (On Screen Display) processing by the main control unit 4.

The remote controller 15 includes a power key, menu key, ↓ key, ↑ key, ← key, → key, determination key, keys for switching each video input terminal, and numeric input 0 to 9 having the same functions as the operation control unit 14. Keys are provided, and when each key is pressed, a code suitable for each key is transmitted as infrared data. The operation control unit 14 receives this signal and notifies the main control unit 4.
In addition, the projector 1 includes a video imaging unit 16, a comparison determination unit 17, and a storage unit 18.

  FIG. 2 is a diagram illustrating a configuration of each unit of the projector 1 according to the present embodiment. The video imaging unit 16 images the connection state of the cable terminal by the user. In the video, an RGB cable and an HDMI cable are imaged.

  The cable terminal shape is taken out from the storage unit 18 to determine whether or not the cable terminal shape is present in the captured image, and is detected by the comparison judgment unit 17. The cable terminal shapes stored and registered are RGB cables, HDMI cables, and video cables, and the detected cable terminal shapes are RGB cables and HDMI cables.

  From the detected captured video, the comparison determination unit 17 determines whether the user is trying to connect to a PC or the like. The determination of the connection operation is made based on whether the cable is held in the user's hand and moved. In the captured image, the user is holding the RGB cable in his / her hand, and the detected operation is moving with the RGB cable held in the user's hand.

  If it is a connection operation, the main control unit 4 is notified, and the main control unit 4 controls the video / audio processing unit 3 to switch the input terminal to the corresponding input terminal. If there is no cable terminal shape, or if there is no connection operation, the input terminal is not switched.

  FIG. 3 is a flowchart showing a video input terminal switching operation. The video imaging unit 16 images the connection state of the cable terminal by the user. The captured image is sent to the comparison determination unit 17 (step S1). The comparison determination unit 17 calls the cable terminal shape from the storage unit 18 to determine whether there is a matching cable terminal shape (step S2), and determines whether it matches (step S3).

  When the cable terminal shapes match (step S3, Yes), the image is taken over time in order to determine whether the user is trying to connect the cable to the PC or the like (step S4). The connection operation is determined based on whether the cable is held in the user's hand and moved (step S5).

  When it is determined that the cable connection operation is to be performed (step S5, Yes), the comparison determination unit 17 notifies the matched cable terminal shape to the main control unit 4, and the main control unit 4 controls the video / audio processing unit 3. Then, the input terminal is switched to the matched input terminal (step S6).

  If it is determined that the operation is not a cable connection operation (No in step S5), it is determined whether or not there is a cable terminal shape in the storage unit 18 in order to determine whether or not there is another cable terminal in the captured image ( Step S7). If there is a cable terminal shape (step S7, Yes), the next cable terminal shape is called (step S2) and the same processing is performed. When there is no cable terminal shape (step S7, No), a video is imaged and the same processing is performed.

  In the embodiment of FIG. 2, the comparison determination unit 17 detects the HDMI cable terminal shape and determines whether there has been a cable connection operation. Time-lapse imaging is performed, it is determined that there is no cable connection operation, and the next matching cable terminal shape is detected.

  It is determined that the RGB cable terminal shape matches, is held in the user's hand, and moved, and the cable connection operation is determined. The main control unit 4 notifies that the RGB cable terminal is connected, and the main control unit 4 controls the video / audio processing unit 3 to switch to the computer input which is the RGB cable terminal input.

  According to the present embodiment, it is determined whether or not the terminal of the video input cable is going to be connected to the user's connection device in the video imaged by the camera, and the video input terminal is switched to the matching video input terminal when trying to connect. The switching operation of the video input terminal by the user can be reduced.

  The above-described embodiment shows an example of a preferred embodiment of the present invention, and the present invention is not limited thereto, and various modifications can be made without departing from the scope of the invention. is there.

DESCRIPTION OF SYMBOLS 1 Projector 2 Image | video input terminal part 3 Image | video audio processing part 4 Main control part 16 Image | video imaging part 17 Comparison judgment part 18 Storage part

Japanese Patent No. 3335948

Claims (1)

Imaging means for imaging the connection state of the cable terminal by the user;
A determination means for determining whether or not the user is attempting to connect the cable;
Storage means for storing the cable terminal shape in advance;
Detecting means for detecting whether or not the cable terminal shape is in the captured image;
When the cable terminal shape is detected and the operation is an operation in which the user tries to connect the cable, input switching means for automatically switching the input,
A projector comprising:

Images