JP2009186712A - Cradle with projection function, and projection system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cradle capable of projecting a magnified image by a projection part, by providing the projection part in the cradle mounted with electronic equipment. <P>SOLUTION: The cradle 40 has a mounting part 1 mounted with the electronic equipment, and a charge terminal connected electrically to a charge terminal of the electronic equipment 100 mounted on the mounting part 1, to charge the electronic equipment 100, and the cradle 40 has further a communication part for receiving a data transmitted from an outside, an image processing means for image-processing the data received by the communication part, and for generating a projection image data, a projection part 2 for projecting the projection image data generated by the image processing means, and a projection determining means for determining the start of the projection of the projection image data of the projection part 2. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cradle and a projection system used when charging an electronic device.

  In recent years, a door phone having a camera as disclosed in Patent Document 1 is becoming widespread. Such a door phone is composed of a calling unit having a camera attached to the front door, and an indoor unit for displaying an image photographed by the camera of the calling unit and responding to the calling of the calling unit. Yes. The indoor unit is generally attached to a wall of a living room. For this reason, when a resident is doing housework or the like in another room and a visitor calls, the resident has to bother to move to the living room where the indoor unit is located and respond. Another problem is that if the resident is in a different room, he / she will not notice the visitor's call.

  Therefore, a door phone device as shown in Patent Document 2 has been proposed. The door phone device shown in Patent Document 2 includes a slave unit that can transmit and receive images and sounds via an indoor unit and a wireless line, and the slave unit displays the received image on the display screen of the slave unit. It can be displayed. By using this handset, it is possible to answer a visitor's call in any room. The door phone device of Patent Literature 2 displays an image transmitted from a camera of a calling device on a liquid crystal screen of a mobile phone or a PHS. Such a door phone always places the handset on a cradle as a charger, and when a visitor calls, the handset emits a ringing tone. Pick up and respond to use. When the handset emits a ringing tone, an image captured by the camera of the calling unit is displayed on the display screen of the handset, so that the resident can check the visitor.

However, when responding to the resident's call, the resident may look at the display screen of the handset because the handset's microphone approaches the mouth and the handset's speaker approaches the ear. There was a problem that it could not be done.
Japanese Patent Laid-Open No. 10-70615 Japanese Patent Laid-Open No. 2002-152392

  The present invention, which has been made to solve the above problems, has been made for the purpose of providing a cradle capable of projecting an image.

The invention according to claim 1, which has been made to solve the above-described problems, is electrically connected to a mounting portion on which an electronic device is mounted and a charging terminal of the electronic device mounted on the mounting portion. In a cradle having a charging terminal for charging the electrical device,
A communication unit for receiving data transmitted from the outside;
Image processing means for performing image processing on data received by the communication unit to generate projection image data;
A projection unit that projects the projection image data generated by the image processing unit;
A mounting state detecting means for detecting whether or not the electronic device is mounted on the mounting portion;
Projection determination means for determining at least one of projection start and end of the projection unit based on information detected by the placement state detection means.

  According to a second aspect of the present invention, the projection determining unit determines the projection start of the projection unit based on the information on the mounting on the mounting unit of the electronic device detected by the mounting state detecting unit.

  According to a third aspect of the present invention, the projection determining unit determines the start of projection of the projection unit based on the information on the separation of the electronic device from the mounting unit detected by the mounting state detection unit.

According to a fourth aspect of the present invention, the mounting state detection means detects an electrical connection between the charging terminal of the electronic device mounted on the mounting portion and the charging terminal of the cradle, and the electronic device is mounted on the mounting portion. Detect whether or not
According to a fourth aspect of the present invention, the projection determining unit determines the projection start of the projection unit based on the information on the placement of the electronic device detected by the mounting state detecting unit.

According to a fifth aspect of the present invention, the electronic device is charged by being electrically connected to a placement portion on which the electronic device is placed and a charging terminal of the electronic device placed on the placement portion. A charging unit, a communication unit that receives data transmitted from the outside, an image processing unit that performs image processing on data received by the communication unit to generate projection image data, and projection image data generated by the image processing unit On the basis of information detected by the mounting state detection unit, a mounting state detection unit that detects whether or not the electronic device is mounted on the mounting unit, A cradle having projection determining means for determining at least one of projection start and end;
An electronic device that has transmission means for transmitting data to the communication unit of the cradle, is mounted on the mounting unit of the cradle, and is electrically connected to a charging terminal of the cradle;
It is comprised from these.

  According to a sixth aspect of the present invention, there is provided an electronic apparatus having a display screen, wherein data displayed on the display screen is projected by a projection unit of a cradle.

The electronic device according to claim 7 is a mobile phone,
The mounting state detection means detects that the mobile phone is detached from the mounting unit,
When the projection determining means determines that the mobile phone has received image data,
The projection determining means determines the start of projection of image data received from the mobile phone.

The electronic device according to claim 8 is a portable image display device that displays data,
When the placement state detection means detects that the portable image display device is placed on the placement unit,
The projection determining means determines the start of projection of the data received from the portable image display device.

The electronic device according to claim 9 is a television receiver that receives and displays television image data,
When the placement state detection means detects that the television receiver is placed on the placement unit,
The projection determining means determines the start of projection of the data received from the portable image display device.

  An electronic device according to a tenth aspect is a portable game machine, wherein data displayed on a display screen of the portable game machine is projected by a projection unit of a cradle.

The electronic device according to claim 11 is a door phone indoor unit that communicates with a door phone indoor unit.
When the placement state detection means detects separation from the placement portion of the door phone indoor unit,
The projection determining means determines the start of projection of the data received from the doorphone indoor unit or the doorphone indoor unit.

  According to the first aspect of the present invention, the electrical device is charged by electrically connecting the mounting unit on which the electronic device is mounted and the charging terminal of the electronic device mounted on the mounting unit. In a cradle having a charging terminal, a communication unit that receives data transmitted from the outside, an image processing unit that performs image processing on the data received by the communication unit to generate projection image data, and the image processing unit Based on a projection unit that projects projection image data, a placement state detection unit that detects whether or not the electronic device is placed on the placement unit, and information detected by the placement state detection unit, Projection determining means for determining at least one of projection start and end of the projection unit is provided. For this reason, the image of the data can be projected by the projection unit.

  According to a second aspect of the present invention, the projection determining unit determines the projection start of the projection unit based on the information on the mounting on the mounting unit of the electronic device detected by the mounting state detecting unit. For this reason, it is possible to project a data image on the projection unit simply by placing the electronic device on the placement unit.

  According to a third aspect of the present invention, the projection determining unit determines the start of projection of the projection unit based on the information on the separation of the electronic device from the mounting unit detected by the mounting state detection unit. For this reason, it is possible to project a data image on the projection unit simply by picking up the electronic device placed on the placement unit.

  According to a fourth aspect of the present invention, the mounting state detection means detects an electrical connection between the charging terminal of the electronic device mounted on the mounting portion and the charging terminal of the cradle, and the electronic device is mounted on the mounting portion. And determining whether to start projection of the projection unit based on the placement information of the electronic device detected by the placement state detection unit. Features. For this reason, it is possible to display an image of data on the projection unit only by the user placing the electronic device on the placement unit or the user picking up the electronic device placed on the placement unit. became.

According to a fifth aspect of the present invention, the electronic device is charged by being electrically connected to a placement portion on which the electronic device is placed and a charging terminal of the electronic device placed on the placement portion. A charging unit, a communication unit that receives data transmitted from the outside, an image processing unit that performs image processing on data received by the communication unit to generate projection image data, and projection image data generated by the image processing unit On the basis of information detected by the mounting state detection unit, a mounting state detection unit that detects whether or not the electronic device is mounted on the mounting unit, A cradle having projection determining means for determining at least one of projection start and end;
An electronic device that has transmission means for transmitting data to the communication unit of the cradle, is mounted on the mounting unit of the cradle, and is electrically connected to a charging terminal of the cradle;
It is comprised from these.
For this reason, by transmitting data from the electronic device to the communication unit of the cradle, it is possible to project an image of the data onto the projection surface by the projection unit of the cradle.

  According to a sixth aspect of the present invention, there is provided an electronic apparatus having a display screen, wherein data displayed on the display screen is projected by a projection unit of a cradle. For this reason, the image of the data can be displayed on the projection plane in a large size on the projection unit, not on a small screen like the display screen.

The electronic device according to claim 7 is a mobile phone, the mounting state detection unit detects that the mobile phone is detached from the mounting unit, and the projection determination unit detects that the mobile phone receives image data. If it is determined that the image data has been received, the projection determining means determines the start of projection of the image data received from the mobile phone.
For this reason, it is possible to display a large image of the data on the projection unit of the cradle even during a call.

  The electronic apparatus according to claim 8 is a portable image display device that displays data, and when the placement state detection unit detects that the portable image display device is placed on the placement unit, the electronic device is projected. The determining means determines the start of projection of the data received from the portable image display device. For this reason, it is possible to display the image of the data on the projection plane in a large size on the projection unit instead of a small screen like the display screen of the portable image display device.

The electronic device according to claim 9 is a television receiver that receives and displays television image data, and the mounting state detecting means detects that the television receiver is mounted on the mounting portion. In this case, the projection determining means determines the start of projection of the data received from the portable image display device.
For this reason, it is possible to display the television image data on the projection plane in a large size on the projection unit, instead of a small screen like the display screen of the television receiver.

  An electronic device according to a tenth aspect is a portable game machine, wherein data displayed on a display screen of the portable game machine is projected by a projection unit of a cradle. For this reason, it is possible to display the image of the data on the projection plane in a large size on the projection unit instead of a small screen like the display screen of the portable game machine.

The electronic device according to claim 11 is a doorphone indoor unit that communicates with the doorphone indoor unit, and when the placement state detecting unit detects the separation of the doorphone indoor unit from the mounting unit, the electronic device is projected. The determining means determines the projection start of the data received from the doorphone indoor unit or the data received from the doorphone indoor unit.
Therefore, even when the resident picks up the door phone indoor unit from the placement unit and responds to the call, the projection unit displays the visitor image included in the data on the projection plane. Became possible.

(Cradle structure)
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front perspective view of a cradle 40 with a projection function showing an embodiment of the present invention. FIG. 2 is a rear perspective view of the cradle 40 with a projection function, and FIG. 3 is a top view of the cradle 40.

  As shown in FIGS. 1 to 3, the cradle 40 with a projection function according to the present embodiment (hereinafter simply referred to as “cradle 40”) has a trapezoidal shape. In the cradle 40, the placement portion 1 is recessed. An electronic device, which will be described later, is inserted into the placement unit 1 and placed thereon.

As shown in FIG. 2, an AC adapter insertion port 5 is provided on the back surface of the cradle 40. A connector of an AC adapter (not shown) is inserted into the AC adapter insertion port 5 so that power is supplied to the cradle 40.

  A charging terminal 3 is exposed at the bottom of the mounting portion 1. Electric power is supplied to the charging terminal 3 from an AC adapter. The charging terminal 3 is for contacting the charging terminal of the electronic device mounted on the mounting unit 1 and electrically connecting the electronic device to charge the electronic device.

  On the front surface of the cradle 40, a projection unit 2 described in detail later is provided. The projection unit 2 projects an image on a projection surface such as a wall.

  The cradle 40 is provided with a placement state detection unit 4. In the present embodiment, the placement state detection unit 4 is provided at the bottom of the placement unit 1. The placement state detection unit 4 detects whether or not an electronic device is placed on the placement unit 1, and indicates whether or not an electronic device is placed on the placement unit 1. Status signal ". The placement state detection unit 4 includes, for example, an optical sensor and a contact switch.

  An operation button 6 is provided on the outer surface of the cradle 40. The operation button 6 is used to operate the projection start / projection end of the image projection unit 2.

(Cradle block diagram)
FIG. 4 is a block diagram of the cradle 40 with a projection function according to the embodiment of the present invention, and the internal configuration of the cradle 40 with a projection function will be described. The cradle 40 with a projection function mainly includes a charging terminal 3, a mounting state detection unit 4, an operation button 6, a CPU 12, a RAM 13, a ROM 14, a communication unit 15, an LED control circuit 21, an LED 22, an illumination optical system 23, and a light modulation element 24. The imaging optical system 25, the image processing circuit 28, the image storage memory 29, the light modulation element drive circuit 30, and the focus adjustment mechanism 31. The charging terminal 3, the placement state detection unit 4, the operation buttons 6, the CPU 12, the RAM 13, the ROM 14, the communication unit 15, the LED control circuit 21, and the image processing circuit 28 are connected to each other via a bus 35.

  A CPU (abbreviation of central processing unit) 12 performs various calculations and control processes in cooperation with a RAM (abbreviation of Random Access Memory) 13 and a ROM (abbreviation of Read Only Memory) 14.

  The RAM 13 temporarily stores the program read and executed by the CPU 12, the data controlled by the CPU 12, and the data controlled by the CPU 12 in its address space.

  The ROM 14 stores various programs and parameters for controlling the cradle 40 with a projection function. The various programs are executed by the CPU 12 to realize various functions. The ROM 14 stores programs such as a mounting state detection unit 14a and a projection determination unit 14b described later. The bus 35 may be configured by connecting a storage device such as a non-volatile memory or a hard disk, and the storage device may store the various programs and parameters.

  The placement state detection unit 14 a is a unit that detects whether or not the electronic device 1 is placed on the placement unit 1. The placement state detection unit 14 a detects whether or not an electronic device is placed on the placement unit 1 based on the “placement state signal” generated by the placement state detection unit 4. Alternatively, the placement state detection unit 14a detects whether or not the electronic device is placed on the placement portion 1 by detecting an electrical connection between the charging terminal 3 of the cradle 40 and the charging terminal of the electronic device. To detect.

  The projection determination unit 14 b is a unit that determines the projection start / projection end of the projection unit 2. The projection determination unit 14b determines the projection start / projection end of the projection unit 2 based on the information detected by the mounting state detection unit 14a, that is, information on whether or not an electronic device is mounted on the mounting unit 1. To do.

  Note that the mounting state detection unit 14a and the projection determination unit 14b may be configured as an ASIC (Application Specific Integrated Circuit).

  The communication unit 15 is an interface that receives “data” from the outside and acquires this data. The communication unit 15 includes, for example, Wireless USB, Bluetooth, and other wireless interfaces. The “data” includes “still image data” and “moving image data”.

  The placement state detection unit 4 detects whether or not an electronic device is placed on the placement unit 1.

  The operation button 6 detects that the user has pressed the operation button 6, sets the projection unit 2 to ON / OFF, and determines the projection start / end of the projection unit 2.

  The projection unit 2 includes an LED control circuit 21, an LED 22, an illumination optical system 23, a light modulation element 24, an imaging optical system 25, an image processing circuit 28, an image storage memory 29, a light modulation element drive circuit 30, and a focus adjustment mechanism 31. It is composed of

  The LED control circuit 21 is a circuit that supplies power to the LED 22 to control driving. An LED (Light Emitting Diode) 22 emits light when power is supplied from the LED control circuit 21. A lamp may be used instead of the LED. The illumination optical system 23 collects the diffused light emitted by the LED 22 into more uniform illumination light and outputs the light to the light modulation element 24.

  The light modulation element 24 is an LCD (Liquid Crystal Display, an abbreviation for liquid crystal display element), and is composed of a large number of translucent pixels. Based on the signal electrode drive signal and the scan electrode drive signal acquired from the light modulation element drive circuit 30, the light modulation element 24 generates a “projection image” by expressing the large number of pixels in gradation. The light modulation element 24 may be a light modulation element such as a DMD (Digital Micromirror Device).

  The imaging optical system 25 focuses the illumination light transmitted through the light modulation element 24 on the projection plane 75.

The image processing circuit 28 acquires “still image data” and “moving image data” acquired by the communication unit 15 and “television image data”, which will be described later, via the bus 35, and adds a signal to each data. Or, change (image processing such as sharpness correction, gamma correction, contrast correction, white balance correction, trapezoid correction, etc., if necessary, reduce or enlarge the pixels according to the pixels of the light modulation element 24) , A circuit for generating “projection image data”. The “projection image data” is data in which gradation corresponding to the primary colors of R (red), G (green), and B (blue) is expressed at points corresponding to the coordinates of the pixels of the light modulation element 24. When the “still image data”, “moving image data”, and “television image data” acquired by the communication unit 15 are compressed, the image processing circuit 28 performs the decompression process before the image Processing is performed to generate “projection image data”. Note that the CPU 12 executes the program stored in the ROM 14 to perform the image processing and generate “projection image data”.

  The image storage memory 29 temporarily stores “projection image data” generated by the image processing circuit 28 in its address space.

  The light modulation element drive circuit 30 is based on “projection image data” output from the image storage memory 29, and a signal electrode drive signal applied to the signal electrode of the light modulation element 24 and a scan electrode drive signal applied to the scan electrode. Is output.

  The focus adjustment mechanism 31 is a mechanism that automatically focuses the imaging optical system 25. When the imaging optical system 25 realizes pan focus with a fixed focus lens, the focus adjustment mechanism 31 is not necessary.

(Outline of the first embodiment)
FIG. 5 shows a rear perspective view of the first embodiment, FIG. 6 shows a front perspective view of the first embodiment, and the first embodiment will be described below. The first embodiment is an embodiment in which the electronic device placed on the placement unit 1 of the cradle 40 is a door phone indoor unit 100 of a door phone device.

  The door phone device used in this embodiment includes a calling unit, a door phone indoor unit, and a door phone indoor unit 100. The calling unit includes a calling button, a microphone, a speaker, and a communication unit, and is attached to, for example, a front door. In the present invention, the calling unit further comprises a camera.

  The door phone indoor master unit includes a response button, a microphone, a speaker, a communication unit, and a display screen, and is attached to a room such as a living room. The communication unit of the calling unit and the communication unit of the door phone indoor base unit can communicate with each other by communication means. The communication means includes both wired and wireless communication means.

  When the visitor presses the call button of the calling unit, the speaker of the door phone indoor main unit emits a ringing tone, and makes the resident in the room perceive the call of the visitor. The resident in the room can respond to the visitor's call by pressing the response button on the door phone indoor unit. Thereafter, the visitor and the resident visit the call unit and the door phone indoor unit. You will be able to talk. That is, when the visitor speaks, the microphone of the calling unit converts the voice of the visitor into an audio signal, and this audio signal is transmitted to the door phone indoor unit via the communication means. Then, the speaker of the door phone indoor base unit converts the audio signal into sound, and the speaker emits the voice of the visitor. When the resident speaks, the microphone of the door phone indoor base unit converts the voice of the resident into an audio signal, and this audio signal is transmitted to the calling unit via the communication means. . And the speaker of a calling unit converts the said audio | voice signal into a sound, and the said speaker emits a resident's voice.

  In the present invention, when the visitor presses the call button of the calling unit, the camera of the calling unit images the visitor to generate “image data”, and this “image data” is transmitted via the communication means. The door phone is transmitted to the indoor unit. Then, the door phone indoor unit displays “image data” on the display screen. The resident can check the visitors by looking at the display screen of the door phone indoor unit. The “image data” includes both “still image data” and “moving image data”.

  As will be described in detail later, the doorphone indoor unit 100 includes an operation unit 103 (shown in FIGS. 5 and 7), a microphone 107 (shown in FIG. 7), a speaker 106 (shown in FIG. 7), a display screen 101 ( 5 and FIG. 7) and a communication unit 110 (shown in FIG. 7). The communication unit 110 of the door phone indoor unit 100 and the communication unit of the door phone indoor unit can communicate with each other by communication means. Note that radio is mainly used as the communication means.

  When a visitor presses the calling button of the calling unit, the speaker 106 of the door phone indoor unit 100 also emits a ringing tone. The resident can respond to the call of the visitor by operating the operation unit 103 of the door phone indoor unit instead of the door phone indoor unit. Thereafter, the visitor and the resident can call the calling unit. A conversation can be made through the door phone indoor unit 100. That is, when the visitor speaks, the microphone of the calling unit converts the visitor's voice into an audio signal, and this audio signal is transmitted to the door phone indoor unit 100 via the communication means. . The speaker 106 of the door phone indoor unit 100 converts the audio signal into sound, and the speaker 106 emits a visitor's voice. When the resident speaks, the microphone 107 of the door phone indoor unit 100 collects the voice of the resident and converts it into an audio signal, and this audio signal is transmitted to the calling unit via the communication means. It has become so. And the speaker of a calling unit converts the said audio | voice signal into a sound, and the said speaker emits a resident's voice.

  When the visitor presses the call button of the calling unit, “image data” captured by the camera of the calling unit is transmitted from the doorphone indoor unit to the doorphone indoor unit 100. The door phone indoor unit 100 displays the “image data” on the display screen 101. The resident can check the visitors by viewing the display screen 101 of the door phone indoor unit 100.

  In the first embodiment, “image data” transmitted by the door phone indoor parent device is projected by the projection unit 2 of the cradle 40.

(Configuration of door phone indoor unit)
As shown in FIG. 5 and FIG. 6, the doorphone indoor unit 100 has a substantially rectangular parallelepiped shape in the present embodiment, but is not limited to this shape. As shown in FIG. 5 and FIG. 6, the lower part of the door phone indoor unit 100 is received and placed on the placement unit 1 of the cradle 40. That is, the placement unit 1 of the cradle 40 has a shape that matches the outer periphery of the lower part of the door phone indoor unit 100.

  A charging terminal 121 (shown in FIG. 7) is provided on the lower surface of the door phone indoor unit 100. The charging terminal 121 and the charging terminal 3 of the cradle 40 are electrically connected to supply power to the door phone indoor unit 100.

  The door phone indoor unit 100 is provided with a display screen 101. The display screen 101 is composed of an LCD or the like. In the present embodiment, the display screen 101 can be viewed from the outside with the door phone indoor unit 100 placed on the placement unit 1.

  A speaker hole 102 is formed in the upper part of the door phone indoor unit 100. A speaker 106 is disposed inside the speaker hole 102. A microphone hole (not shown) is formed in the lower portion of the door phone indoor unit 100. A microphone 107 is disposed inside the microphone hole. An operation unit 103 is provided on the outer surface of the door phone indoor unit 100.

(Block diagram of door phone indoor unit)
FIG. 7 shows a block diagram of the door phone indoor unit 100, which will be described below. As shown in FIG. 7, the door phone indoor unit 100 mainly includes a CPU 112, a RAM 113, a ROM 114, a display screen 101, an operation unit 103, an audio processing unit 105, a speaker 106, a microphone 107, a communication unit 110, and a charging unit 120. , A charging terminal 121, a charge detection unit 122, and a secondary battery 123. The CPU 112, the RAM 113, the ROM 114, the display screen 101, the operation unit 103, the sound processing unit 105, the communication unit 110, and the charging unit 120 are connected to each other via a bus 135.

  The CPU 112 performs various calculations and control processing in cooperation with the RAM 113 and the ROM 114.

  The RAM 113 temporarily stores programs executed by the CPU 112, data controlled by the CPU 112, and data controlled by the CPU 112 in its address space.

  The ROM 114 stores various programs and parameters for controlling the doorphone indoor unit 100. The various programs are executed by the CPU 112 to realize various functions. The bus 135 may be configured by connecting a storage device such as a nonvolatile memory or a hard disk, and the storage device may store the various programs and parameters.

  The display screen 101 displays “image data” acquired via the bus 135.

  The operation unit 103 is for changing various settings of the doorphone indoor unit 100 and operating the doorphone indoor unit 100. When the user operates the operation unit 103, a “setting change signal” and an “operation signal” are generated and delivered to various programs via the bus 135. When there is a call from the calling unit, the user can respond by operating the operation unit 103.

  The audio processing unit 105 acquires the audio signal output from the microphone 107 and performs audio processing. The sound processing unit 105 performs sound processing on the sound signal output to the speaker 106.

  The microphone 107 acquires sound from the outside and converts it into an audio signal that is an electrical signal. The voice spoken by the user is converted into a voice signal by the microphone 107 and then output to the voice processing unit 105.

  The speaker 106 converts the audio signal output from the audio processing unit 105 into audio.

  The communication unit 110 receives “data” such as “audio signal” and “image data” transmitted from the communication unit of the door phone indoor parent device. In addition, the communication unit 110 transmits the “voice signal” generated by the microphone 107 to the communication unit of the door phone indoor parent device. The communication unit 110 includes, for example, Wireless USB, Bluetooth, and other wireless interfaces.

The secondary battery 123 includes a lithium ion battery, a nickel metal hydride battery, and a nickel cadmium battery. The door phone indoor unit 100 is activated by the power supplied from the secondary battery 123.

  The charging detection unit 122 detects the voltage and charging voltage of the secondary battery 123 and outputs the information to the charging unit 120.

  The charging unit 120 supplies current supplied from the charging terminal 121 to the secondary battery 123, and controls current supply and charging voltage. When the charge detection unit 122 determines that the secondary battery 123 is in an overcharged state, the current supply to the secondary battery 123 is cut off.

(Flow of the first embodiment)
FIG. 8 shows a flowchart of the first embodiment, and the first embodiment will be described below. When the flow of the first embodiment starts, the process proceeds to S12 “call signal reception”. When a visitor presses the call button of the calling unit, a “calling signal” is transmitted from the communication unit of the calling unit to the communication unit 110 of the doorphone indoor unit 100 via the doorphone indoor unit. When the communication unit 110 of the door phone indoor unit 100 receives the “calling signal”, the voice processing unit 105 outputs the voice signal of the ringing sound to the speaker 106, and the speaker 106 emits the “ringing sound”. Further, the communication unit 110 of the door phone indoor unit 100 transmits a call signal to the cradle 40. In the process of S12, the communication unit 15 of the cradle 40 receives a call signal. Of course, the “call signal” transmitted from the communication unit of the calling unit to the communication unit 110 of the doorphone indoor unit 100 may be directly received by relaying the door phone indoor unit.

  When the resident presses down the operation unit 103 of the door phone indoor unit 100, the voice processing unit 105 is turned on, and the speaker 106 and the microphone 107 can communicate with the visitor. Proceed to the determination of "None?" On the other hand, since the resident wants to check the appearance of the visitor even when the operation unit 103 of the door phone indoor unit 100 is not pressed, the process proceeds to the determination of S14 regardless of the operation of the door phone indoor unit 100.

  In S <b> 14, “there is no slave unit in the cradle?”, The placement state detection unit 14 a of the cradle 40 determines whether the doorphone indoor unit 100 is placed on the placement unit 1. If the resident picks up the doorphone indoor unit 100 from the cradle 40 in the determination of S14, the placement state detection means 14a causes the doorphone indoor unit 100 to be detached from the placement unit 1, and the placement unit 1 Therefore, the process proceeds to S15 “projection unit ON”. On the other hand, when the resident does not pick up the doorphone indoor unit 100 from the cradle 40 and the placement state detection means 14a determines that the doorphone indoor unit 100 is placed on the placement unit 1, The process does not proceed to S15.

  In the process of S15 “projection unit ON”, the projection determination unit 14b outputs a command to turn the projection unit 2 on. Specifically, the LED control circuit 21 turns on the LED 22. When the process of S15 is completed, the process proceeds to S16, “Are there a received signal?”.

  In determining whether there is a reception signal in S16, the projection determining unit 14b determines whether or not the communication unit 15 has received “data”. The “data” received by the communication unit 15 is “data” transmitted by the door phone indoor unit. Of course, the “data” transmitted by the door phone indoor unit may be received by the door phone indoor unit 100 and further transmitted to the cradle 40. If the projection determining unit 14b determines that the communication unit 15 has received “data”, the process proceeds to S17 “projection”. On the other hand, when the projection determining unit 14b determines that the communication unit 15 does not receive “data” for a certain period of time, the process proceeds to S19 “projection unit OFF”.

  In the process of S <b> 17 “projection”, the projection determination unit 14 b performs a process of outputting “image data” included in the “data” received by the communication unit 15 to the image processing circuit 28. The image processing circuit 28 performs image processing on the “image data” to generate “projection image data” and temporarily stores it in the image storage memory 29, and also executes the “projection image” stored in the image storage memory 29. The process of sequentially outputting “data” to the light modulation element drive circuit 30 is performed. The light modulation element 24 generates an image, the illumination light transmitted through the light modulation element 24 is imaged by the imaging optical system 25, and an “image” is projected onto a projection surface 75 such as a wall. When the process of S17 is completed, the process proceeds to S18 “Place on Cradle?”.

  In determination of S18 “placed on cradle?”, The projection determining unit 14b determines whether or not the doorphone indoor unit 100 is placed on the placement unit 1. When the resident places the doorphone indoor unit 100 on the mounting unit 1 of the cradle 40, the projection determining unit 14b determines that the doorphone indoor unit 100 is mounted on the mounting unit 1. Therefore, the process proceeds to S19 “projection unit OFF”. On the other hand, when the projection determining unit 14b determines that the doorphone slave unit is not placed on the placement unit 1, the process returns to the determination of S16.

  In the process of S19 “projection unit OFF”, the projection determination unit 14b performs a process of setting the projection unit 2 to an OFF state. Specifically, the LED control circuit 21 turns off the LED 22. When the process of S19 ends, a series of flows ends.

  In contrast to the embodiment described with reference to the flow of FIG. 8, in the determination of S <b> 14, the placement state detection unit 14 a detects that the doorphone indoor unit 100 is placed on the placement unit 1. Then, the process proceeds to S15, and the projection determining unit 14b may turn on the projection unit 2. That is, when the resident places the doorphone indoor unit 100 on the placement unit 1 of the cradle 40, the projection unit 2 projects the “image data” transmitted by the doorphone indoor unit in the process of S17. At any rate. In this case, when the resident picks up the doorphone indoor unit 100 placed on the placement unit 1 from the placement unit 1, the placement state detection means 14 a causes the doorphone room from the placement unit 1. The separation of the slave unit 100 is detected, and in the process of S19, the projection determining unit 14b turns the projection unit 2 into an OFF state.

  Alternatively, when the resident operates the operation unit 103 of the door phone indoor unit 100 or the operation button 6 of the cradle 40 in the determination of S14, the cradle 40 receives the operation information via the communication unit 15. Proceeding to the process of S15, in the process of S15, the projection determining means 14b may turn on the projection unit 2. In this case, when the resident operates the operation unit 103 of the door phone indoor unit 100 or the operation button 6 of the cradle 40, the cradle 40 receives the operation information via the communication unit 15 in the process of S19. By receiving the signal, the projection determining unit 14b sets the projection unit 2 to the OFF state.

  In the embodiment described above, the door phone indoor base unit directly transmits “image data” to the communication unit 15 and projects this “image data” by the projection unit 2. Without being limited to the embodiment, the door phone indoor unit 100 is provided with a short-range wireless unit that communicates with the communication unit 15, and the door phone indoor unit 100 relays "image data" transmitted from the door phone indoor unit 100. The short-range wireless unit may transmit the image data to the communication unit 15 and project the “image data” by the projection unit 2.

As described above, in the first embodiment, since the “image data” transmitted by the door phone indoor master unit is projected by the projection unit 2 of the cradle 40, it is in response to a call by a resident. In addition, it is possible to display a large image of the visitor on the projection plane 75 by the projection unit 2.

(Second Embodiment)
Next, a second embodiment will be described. The second embodiment is an embodiment in which “image data” received by the mobile phone 200 is projected by the projection unit 2 of the cradle 40. FIG. 9 shows a block diagram of the mobile phone 200, and the second embodiment will be described below.

  As shown in FIG. 9, the cellular phone 200 mainly includes a CPU 212, a RAM 213, a ROM 214, a display screen 201, an operation unit 203, an audio processing unit 205, a speaker 206, a microphone 207, a wireless unit 210, and a short-range wireless unit 211. , An image processing circuit 230, a charging unit 220, a charging terminal 221, a charging detection unit 222, and a secondary battery 223. The CPU 212, RAM 213, ROM 214, display screen 201, operation unit 203, audio processing unit 205, wireless unit 210, short-range wireless unit 211, image processing circuit 230, and charging unit 220 are connected to each other via a bus 235.

  The CPU 212 performs various calculations and control processes in cooperation with the RAM 213 and the ROM 214.

  The RAM 213 temporarily stores a program read and executed by the CPU 212, data controlled by the CPU 212, and data controlled by the CPU 212 in its address space.

  The ROM 214 stores various programs and parameters for controlling the mobile phone 200. The various programs are executed by the CPU 212 to realize various functions. The bus 235 may be configured by connecting a storage device such as a nonvolatile memory or a hard disk, and the storage device may store the various programs and parameters.

  The display screen 201 displays “image data” acquired via the bus 235.

  The operation unit 203 is for changing various settings of the mobile phone 200 and operating the mobile phone 200. When the user operates the operation unit 203, a “setting change signal” and an “operation signal” are generated and delivered to various programs via the bus 235.

  The audio processing unit 205 acquires the audio signal output from the microphone 207 and performs audio processing. The audio processing unit 205 performs audio processing on the audio signal output to the speaker 206.

  The microphone 207 acquires external audio and converts it into an audio signal that is an electrical signal. The voice spoken by the user is output to the voice processing unit 205 after being converted into a voice signal by the microphone 207.

  The speaker 206 converts the audio signal output from the audio processing unit 205 into audio.

  The wireless unit 210 transmits / receives “data” such as “voice data” and “image data” to / from a base station of a mobile phone. The “image data” includes “still image data” and “moving image data”. The communication standards of the wireless unit 210 include PDC (Personal Digital Cellular), cdmaOne, W-CDMA (Wideband cCode Division Multiple ACCESS), CDMA2000, GSM (Global System for Mobile Communication) standards, and the like.

  For example, the “image data” on the Internet is downloaded to the mobile phone 200 by downloading by the wireless unit 210. Alternatively, the “image data” transmitted by another mobile phone is received by the wireless unit 210 so that the “image data” is input to the mobile phone 200.

  The short-range wireless unit 211 is an interface that transmits and receives “data” such as “image data”. The short-range wireless unit 211 includes, for example, Wireless USB, Bluetooth, and other wireless interfaces. The short-range wireless unit 211 transmits / receives “data” to / from the communication unit 15 of the cradle 40.

  The secondary battery 223 includes a lithium ion battery, a nickel hydrogen battery, and a nickel cadmium battery. The mobile phone 200 is activated by the power supplied from the secondary battery 223.

  The charging detection unit 222 detects the voltage and charging voltage of the secondary battery 223 and outputs these pieces of information to the charging unit 220.

  The charging unit 220 supplies the current supplied from the charging terminal 221 to the secondary battery 223, and controls the supply of current and the charging voltage. When the charge detection unit 222 determines that the secondary battery 223 is in an overcharged state, the current supply to the secondary battery 223 is cut off.

  The image processing circuit 230 is a circuit that processes the “image data” received by the wireless unit 210 and displays it on the display screen 201. When the “image data” received by the wireless unit 210 is compressed, the image processing circuit 230 performs the image processing after performing the decompression processing. Further, the image processing circuit 230 compresses “image data” transmitted from the communication unit 15 by the short-range wireless unit 310.

(Description of the flow of the second embodiment)
FIG. 10 shows a flowchart of the mobile phone according to the second embodiment, and FIG. 11 shows a flowchart of the cradle of the second embodiment. The flow of the second embodiment will be described.

  When the flow of FIG. 10 starts, the operation proceeds to S32 “Place on Cradle?”. When the user places the mobile phone 200 on the placement unit 1 of the cradle 40, the process proceeds to the determination in S33 “Screen Displaying?”.

  On the other hand, when the flow of FIG. 11 starts, the process proceeds to S42 “Mobile phone placement?”. When the user picks up the mobile phone 200 from the placement unit 1 of the cradle 40, the placement state detection unit 14a detects that the mobile phone 200 is not placed on the placement unit 1, and S43 “Communication unit ON” Proceed to the process. On the other hand, when the placement state detection unit 14a detects that the mobile phone 200 is placed on the placement unit 1, the process does not proceed to S43.

  In the processing of S43 “communication unit ON”, the communication unit 15 of the cradle 40 is turned on. When the processing of S43 ends, the process proceeds to S44 “data reception?”.

When the wireless unit 210 of the mobile phone 200 receives “data” in the determination of S33 “screen display?” In the flow of FIG. 10, this “data” is temporarily stored in the RAM 213 and “data” is displayed. "Image data" included in "" is displayed on the display screen 201, and the process proceeds to S34 "Send data". On the other hand, if “image data” is not displayed on the display screen 201 for a certain period of time, the flow of FIG. 10 ends.

  In the process of S <b> 34, the short-range wireless unit 211 transmits “data” stored in the RAM 213 to the communication unit 15 of the cradle 40. When the process of S34 is completed, the process proceeds to S35 “display screen OFF”.

  In the process of S35 “display screen OFF”, the display screen 201 is turned off. When the process of S35 is completed, the operation proceeds to S36 “Remove from Cradle?”.

  When the user removes the mobile phone 200 from the cradle 40 in the operation of S36 “Remove from cradle”, the process proceeds to S38 “Send projection command transmission”. On the other hand, when the user does not remove the mobile phone 200 from the cradle 40, the process proceeds to S37 “Display end?”.

If the user presses the call end or hang-up button in the determination of S37 “display end?”, It is determined that the display ends, and S38 “projection end command transmission”.
Proceed to the process. On the other hand, if the user does not end the call or press the disconnect button, the process returns to S34.

In the process of S38 “projection end command transmission”, the short-range wireless unit 211 of the mobile phone 200 sends a “projection end command” to the cradle 40.
Send. When the process of S38 ends, the flow of the mobile phone 200 ends.

  When the projection determining unit 14b determines that the communication unit 15 of the cradle 40 has received “data” in the determination of S44 “data reception?” In FIG. 11, this “data” is temporarily stored in the RAM 13. Then, the process proceeds to S45 “image data present?”.

  If the projection determining unit 14b determines that “image data” is included in “data” in the determination of S45 “image data present?”, The process proceeds to S46 “projection unit ON”. move on. On the other hand, if the projection determining unit 14b determines that “image data” is not included in the “data” received by the communication unit 15 in S44, the process proceeds to S48 “projection end?”. .

  In the process of S46 “projection unit ON”, the projection determination unit 14b turns the LED control circuit 21 on. The LED control circuit 21 in the ON state turns on the LED 22. When the process of S46 “projection unit ON” is completed, the process proceeds to the process of S47 “projection”.

  In the processing of S <b> 47 “projection”, the projection determination unit 14 b performs processing of outputting “image data” stored in the RAM 13 to the image processing circuit 28. The image processing circuit 28 performs image processing on the “image data” to generate “projection image data” and temporarily stores it in the image storage memory 29, and also executes the “projection image” stored in the image storage memory 29. The process of sequentially outputting “data” to the light modulation element drive circuit 30 is performed. The light modulation element 24 generates an image, the illumination light transmitted through the light modulation element 24 is imaged by the imaging optical system 25, and an “image” is projected onto a projection surface 75 such as a wall. When the processing of S47 ends, the process returns to the determination of S44 “data reception?”.

In the determination of S48 “projection finished?”, The projection determining unit 14b determines whether or not to turn off the projection unit 2. In the process of S38 “projection end command transmission” in the flow of the mobile phone 200 in FIG. 10, the short-range wireless unit 211 of the mobile phone 200 transmits a “projection end command” to the cradle 40, and the communication unit 15 of the cradle 40 When the “projection end command” is received, the process proceeds to S49 “projection unit OFF”. On the other hand, when the communication unit 15 of the cradle 40 does not receive the “projection end command”, the process returns to the determination of S44. In the case where the “projection image data” is not projected by the projection unit 2 without receiving the “image data” for a certain time, and the projection determining unit 14b determines that the projection unit 2 has not been operated for a certain time. In addition, the process may proceed to S49 “projection unit OFF”.

  In the process of S49 “projection unit OFF”, the projection determination unit 14b turns off the LED 22 by setting the LED control circuit 21 to the OFF state. When the process of S49 ends, the flow of FIG. 11 ends.

  In the second embodiment described above, when the communication unit 15 receives “image data” in a state where the mobile phone 200 is not placed on the placement unit 1, the projection determination unit 14 b starts projection. However, the second embodiment is not limited to this embodiment, and the user places the mobile phone 200 on the placement unit 1 of the cradle 40. When the placement state detection unit 14a detects that the mobile phone 200 is placed on the placement unit 1 and the communication unit 15 receives “image data”, the projection determination unit 14b starts projection. It can be determined that the projection unit 2 is turned on. Alternatively, when the user operates the operation unit 203 of the mobile phone 200 or the operation button 6 of the cradle 40, the projection unit 2 is turned on or off, and the “image” is projected on the projection unit 2. It does not matter if the start / end is determined.

  As described above, in the second embodiment, since the “image data” received by the mobile phone 200 is projected by the projection unit 2 of the cradle 40, it is not a small screen like the display screen 201 of the mobile phone 200. Thus, it is possible to display “image data” large on the projection surface 75 such as a wall in the projection unit 2.

(Outline of the third embodiment)
FIG. 12 shows a rear perspective view of the third embodiment, FIG. 13 shows a front perspective view of the third embodiment, and the third embodiment will be described below. In the third embodiment, “image data” stored in the portable image display device 300 or “image data” and “television image data” received by the portable image display device 300 are used as the projection unit 2 of the cradle 40. It is embodiment which projects by.

  As shown in FIGS. 12 and 13, the portable image display device 300 is a thin plate shape in the present embodiment, but is not limited to this shape. As shown in FIGS. 12 and 13, the lower part of the portable image display device 300 is received and placed on the placement unit 1 of the cradle 40. That is, the placement unit 1 of the cradle 40 has a shape that matches the lower part of the portable image display device 300.

  A charging terminal 321 (shown in FIG. 14) is provided on the lower surface of the portable image display device 300. The charging terminal 321 and the charging terminal 3 of the cradle 40 are connected to supply power to the portable image display device 300.

  The portable image display device 300 is provided with a display screen 301. The display screen 301 is composed of an LCD or the like. In the present embodiment, the display screen 301 can be viewed from the outside with the portable image display device 300 placed on the placement unit 1.

  An operation unit 303 is provided on the outer surface of the portable image display device 300.

(Block diagram of portable image display device)
As shown in FIG. 14, the portable image display device 300 mainly includes a CPU 312, a RAM 313, a ROM 314, a storage unit 315, a display screen 301, an operation unit 303, an audio processing unit 305, a speaker 306, an input unit 310, a short distance. The wireless unit 311, the receiving unit 317, the antenna 318, the image processing circuit 330, the charging unit 320, the charging terminal 321, the charging detection unit 322, and the secondary battery 323 are configured. The CPU 312, the RAM 313, the ROM 314, the storage unit 315, the display screen 301, the operation unit 303, the sound processing unit 305, the input unit 310, the short-range wireless unit 311, the receiving unit 317, the image processing circuit 330, and the charging unit 320 Connected with.

  The CPU 312 performs various calculations and control processes in cooperation with the RAM 313 and the ROM 314.

  The RAM 313 temporarily stores a program read and executed by the CPU 312, data controlled by the CPU 312, and data controlled by the CPU 312 in its address space.

  The ROM 314 stores various programs and parameters for controlling the portable image display device 300. The various programs are executed by the CPU 312 to realize various functions. It should be noted that the storage unit 315 described later may be configured to store the various programs and parameters.

  The storage unit 315 includes a nonvolatile memory such as a flash memory and a storage device such as a hard disk.

  The display screen 301 displays “image data” acquired via the bus 335.

  The operation unit 303 is for changing various settings of the portable image display device 300 and operating the portable image display device 300. When the user operates the operation unit 303, a “setting change signal” and an “operation signal” are generated and delivered to various programs via the bus 335.

  The audio processing unit 305 performs audio processing on the audio signal output to the speaker 306.

  The speaker 306 converts the audio signal output from the audio processing unit 305 into audio.

  The input unit 310 is an interface through which “image data” is input. The “image data” input to the input unit 310 is stored in the storage unit 315. The input unit 310 includes a LAN (Local Area Network), USB (abbreviation of Universal Serial Bus, including USB 1.0, USB 1.1, USB 2.0), IEEE 1394, and other interfaces. Alternatively, the input unit 310 may be one that uses wireless, and examples of the interface in this case include so-called wireless LAN, Bluetooth, and other wireless interfaces defined in IEEE802.

For example, by inserting a USB memory storing “image data” into the input unit 310 whose interface is USB, the “image data” is input to the portable image display device 300. Alternatively, “image data” on the Internet is downloaded by the input unit 310 whose interface is a LAN or wireless LAN, and the “image data” is input to the portable image display device 300.

  “Image data” includes “still image data” and “moving image data”. “Still image data” includes JPEG (abbreviation of Joint Photographic Groups Group), BMP (abbreviation of Bitmap), TIFF (abbreviation of Tagged Image File Format), PNG (abbreviation of Portable Network Graph, GIF). "Still image data" such as (omitted). The moving image compression algorithm of “moving image data” is H.264. H.264, Motion JPEG, MPEG-1, MPEG-2, MPEG-4, and the moving image fail format of “moving image data” includes AVI (abbreviation of Audio Video Interleave), ASF (abbreviation of Advanced Systems Format), etc. Is included.

  The short-range wireless unit 311 is an interface that transmits and receives “data” such as “image data” and “television image data” described later. The short-range wireless unit 311 includes, for example, Wireless USB, Bluetooth, and other wireless interfaces. The short-range wireless unit 311 transmits and receives “data” to and from the communication unit 15 of the cradle 40.

  The receiving unit 317 receives “television image data” via the antenna 318. The “television image data” includes “television image data” of so-called analog television broadcasting (NTSC, PAL, SECM) and “television image data” of so-called digital television broadcasting. Digital television broadcasting includes so-called high-vision broadcasting (HI-VISION) and one-segment broadcasting (1 seg). The “television image data” received by the receiving unit 317 is temporarily stored in the RAM 313.

  Secondary batteries 323 include lithium ion batteries, nickel metal hydride batteries, and nickel cadmium batteries. The portable image display device 300 is activated by the power supplied from the secondary battery 323.

  The charging detection unit 322 detects the voltage and charging voltage of the secondary battery 323 and outputs these pieces of information to the charging unit 320.

  The charging unit 320 supplies the current supplied from the charging terminal 321 to the secondary battery 323, and controls the supply of current and the charging voltage. When the charge detection unit 322 determines that the secondary battery 323 is in an overcharged state, the current supply to the secondary battery 323 is cut off.

  The image processing circuit 330 is a circuit that performs image processing on the “image data” received by the input unit 310 and the “television image data” received by the receiving unit 317 and displays them on the display screen 301. When the “image data” received by the input unit 310 and the “television image data” received by the receiving unit 317 are compressed, the image processing circuit 330 performs the image processing after performing the decompression process. . The image processing circuit 330 compresses “image data” or “television image data” transmitted from the communication unit 15 by the short-range wireless unit 311.

(Description of the flow of the third embodiment)
FIG. 15 shows a flowchart of the portable image display device 300 of the third embodiment, and FIG. 16 shows a flowchart of the cradle 40 of the third embodiment. The flow of the third embodiment will be described.

  When the flow of FIG. 15 starts, the operation proceeds to S52 “Place on Cradle?”. When the user places the portable image display device 300 on the placement unit 1 of the cradle 40, the process proceeds to S53 “screen display in progress?”.

  On the other hand, when the flow of FIG. 16 starts, the process proceeds to S62 “Portable Image Display Device Placed?”. When the user places the portable image display device 300 on the placement unit 1 of the cradle 40, the placement state detection unit 14a detects the placement of the portable image display device 300 on the placement unit 1, and S63 “Communication The process proceeds to “Part ON”.

  In the processing of S63 “communication unit ON”, the communication unit 15 of the cradle 40 is turned on. When the process of S63 ends, the process proceeds to S64 “Data reception?”.

  15, when “image data” input from the input unit 310 is displayed on the display screen 301 in the determination of S53 “screen is displayed?”, The process proceeds to S54 “send data”. In addition, when “television image data” received by the receiving unit 317 is displayed on the display screen 301 in the determination of S53, the process proceeds to S54 “data transmission”. On the other hand, if “image data” is not displayed on the display screen 301 for a certain period of time, the flow of FIG. 15 ends.

  In the processing of S <b> 54, the short-range wireless unit 311 transmits “image data” stored in the storage unit 315 and “television image data” stored in the RAM 313 to the communication unit 15 of the cradle 40. When the process of S54 ends, the process proceeds to S55 “display screen OFF”. On the other hand, when the short-range wireless unit 311 does not transmit “data” to the communication unit 15 of the cradle 40 for a certain period of time, the flow of FIG.

  In the process of S55 “display screen OFF”, the display screen 301 is turned off. When the processing of S55 is completed, the operation proceeds to S56 “Remove from Cradle?”.

  When the user removes the portable image display device 300 from the cradle 40 in the operation of S56 “Remove from cradle”, the process proceeds to S58 “Send projection command transmission”. On the other hand, when the user does not remove the portable image display device 300 from the cradle 40, the process proceeds to S57 “Display end?”.

  If the user presses the call end or hang-up button in the determination of S57 “display end?”, It is determined that the display is ended, and the process proceeds to S58 “projection end command transmission”. On the other hand, if the user does not end the call or press the disconnect button, the process returns to S54.

  In the process of S58 “transmission of projection end command”, the short-range wireless unit 311 of the portable image display device 300 transmits a “projection end command” to the cradle 40. When the process of S58 ends, the flow of the portable image display device 300 ends.

  In the determination of S64 “data reception?” In FIG. 16, when the projection determining unit 14 b determines that the communication unit 15 of the cradle 40 has received “data” or “television image data”, this “data”. Or “television image data” is temporarily stored in the RAM 13, and the process proceeds to S65, “Is there image data?”.

If the projection determining unit 14b determines that “image data” is included in the “data” received by the communication unit 15 in S64 in S65 “image data present?”, S66 “ The process proceeds to the process of turning on the projection unit. If the communication unit 15 has received “television image data” in the determination in S64, the process proceeds to S66 in the determination in S65. On the other hand, if the projection determining unit 14b determines that “image data” is not included in the “data”, the process proceeds to S68 “projection end?”. Alternatively, when the communication unit 15 does not receive “television image data” for a certain period of time, the process proceeds to S68.

  In the process of S66 “Turn on the projection unit”, the projection determination unit 14b turns on the LED control circuit 21. The LED control circuit 21 in the ON state turns on the LED 22. When the processing of S66 “projection unit ON” ends, the process proceeds to S67 “projection”.

  In the process of S67 “projection”, the projection determination unit 14b performs a process of outputting “image data” and “television image data” stored in the RAM 13 to the image processing circuit 28. The image processing circuit 28 performs image processing on “image data” and “television image data” to generate “projection image data”, and temporarily stores them in the image storage memory 29. The “projection image data” stored in is sequentially output to the light modulation element drive circuit 30. The light modulation element 24 generates an image, the illumination light transmitted through the light modulation element 24 is imaged by the imaging optical system 25, and an “image” is projected onto a projection surface 75 such as a wall. When the processing of S67 ends, the process returns to the determination of S64 “data reception?”.

  In the determination of S68 “projection finished?”, The projection determining unit 14b determines whether or not to turn off the projection unit 2. In the process of S58 “projection end command transmission” in the flow of the portable image display device 300 in FIG. 15, the short-range wireless unit 311 of the portable image display device 300 transmits the “projection end command” to the cradle 40. When the communication unit 15 receives the “projection end command”, the process proceeds to S69 “projection unit OFF”. On the other hand, when the communication unit 15 of the cradle 40 does not receive the “projection end command”, the process returns to the determination of S64. In the case where the “projection image data” is not projected by the projection unit 2 without receiving the “image data” for a certain time, and the projection determining unit 14b determines that the projection unit 2 has not been operated for a certain time. In addition, the process may proceed to S69 “projection unit OFF”.

  In the process of S69 “projection unit OFF”, the projection determination unit 14b turns off the LED control circuit 21 and turns off the LED 22. When the process of S69 ends, the flow of FIG. 16 ends.

  In the third embodiment described above, when the communication unit 15 receives “image data” with the portable image display device 300 placed on the placement unit 1, the projection determination unit 14 b starts the projection. However, the third embodiment is not limited to this embodiment, and the user takes out the portable image display device 300 from the cradle 40 and places it in the mounted state. When the detection unit 14a detects that the portable image display device 300 is detached from the placement unit 1, and the communication unit 15 receives "image data" or "television image data", the projection determination unit 14b However, the projection start may be determined and the projection unit 2 may be turned on. Alternatively, when the user operates the operation unit 303 of the portable image display device 300 or the operation button 6 of the cradle 40, the projection unit 2 is turned on or off, and the “image” in the projection unit 2 is displayed. The start / end of projection may be determined.

  Thus, in the third embodiment, “image data” input to the portable image display device 300 and “television image data” received by the portable image display device 300 are projected by the projection unit 2 of the cradle 40. Therefore, it is possible to display “image data” large on the projection surface 75 such as a wall by the projection unit 2 instead of a small screen like the display screen 301 of the portable image display device 300.

  Note that the portable image display device 300 according to the third embodiment may be a television receiver that does not include the input unit 310 or the storage unit 315, or a portable image display device that does not include the reception unit 317. . Further, the portable image display device 300 of the third embodiment may be a storage medium connected to the input unit 310, a storage unit 315, or a portable game machine in which a computer game program is stored.

  Although the present invention has been described above in connection with the most practical and preferred embodiments at the present time, the present invention is not limited to the embodiments disclosed herein. However, the invention can be changed as appropriate without departing from the spirit or concept of the invention that can be read from the claims and the entire specification, and a cradle with a projection function accompanying such a change is also understood to be included in the technical scope. There must be.

It is a front perspective view of the cradle with a projection function which shows embodiment of this invention. It is a back perspective view of the cradle with a projection function which shows an embodiment of the invention. It is a top view of the cradle with a projection function which shows embodiment of this invention. It is a block diagram of the cradle with a projection function of this invention. It is a back surface perspective view of a 1st embodiment. It is a front perspective view of a 1st embodiment. It is a block diagram of a door phone indoor unit. It is a flowchart of a 1st embodiment. It is a block diagram of a mobile phone. It is a flowchart of the mobile telephone of 2nd Embodiment. It is a flowchart of the cradle of 2nd Embodiment. It is a back surface perspective view of 3rd Embodiment. It is a front perspective view of a 3rd embodiment. It is a block diagram of a portable image display device. It is a flowchart of the portable image display apparatus of 3rd Embodiment. It is a flowchart of the cradle of 3rd Embodiment.

Explanation of symbols

1 Placement Unit 2 Projection Unit 3 Charging Terminal (Cradle with Projection Function)
4 Mounting state detector 5 AC adapter insertion slot 6 Operation button (cradle with projection function)
12 CPU (cradle with projection function)
13 RAM (cradle with projection function)
14 ROM (cradle with projection function)
14a Placement state detection means 14b Projection determination means 15 Communication unit (cradle with projection function)
21 LED control circuit 22 LED
DESCRIPTION OF SYMBOLS 23 Illumination optical system 24 Light modulation element 25 Imaging optical system 28 Image processing circuit 29 Image storage memory 30 Light modulation element drive circuit 31 Focus adjustment mechanism 35 Bus (cradle with a projection function)
40 Cradle with Projection Function 75 Projection Surface 100 Doorphone Indoor Unit 101 Display Screen (Doorphone Indoor Unit)
102 Speaker hole 103 Operation unit (door phone indoor unit)
105 Voice processing unit (door phone indoor unit)
106 Speaker (door phone indoor unit)
107 Microphone (door phone indoor unit)
110 Communication unit (door phone indoor unit)
112 CPU (door phone indoor unit)
113 RAM (door phone indoor unit)
114 ROM (door phone indoor unit)
120 Charging unit (door phone indoor unit)
121 Charging terminal (door phone indoor unit)
122 Charge detection unit (door phone indoor unit)
123 Secondary battery (door phone indoor unit)
135 Bus (door phone indoor unit)
200 mobile phone 201 display screen (mobile phone)
203 Operation unit (mobile phone)
205 Voice processor (mobile phone)
206 Speaker (mobile phone)
207 Microphone (cell phone)
210 Radio unit (mobile phone)
211 Short-range wireless unit (mobile phone)
212 CPU (mobile phone)
213 RAM (mobile phone)
214 ROM (mobile phone)
220 Charging unit (mobile phone)
221 Charging terminal (mobile phone)
222 Charge detection unit (mobile phone)
223 Secondary battery (cell phone)
230 Image processing circuit (mobile phone)
235 bus (mobile phone)
300 Portable Image Display Device 301 Display Screen (Portable Image Display Device)
303 Operation unit (portable image display device)
305 Audio processing unit (portable image display device)
306 Speaker (portable image display device)
310 Input unit (portable image display device)
311 Short-range wireless unit (portable image display device)
312 CPU (portable image display device)
313 RAM (portable image display device)
314 ROM (portable image display device)
315 Storage unit (portable image display device)
317 Receiver (portable image display device)
318 Antenna (portable image display device)
320 Charging unit (portable image display device)
321 Charging terminal (portable image display device)
322 Charge detection unit (portable image display device)
323 Secondary battery (portable image display device)
330 Image processing circuit (portable image display device)
335 bus (portable image display device)

Claims (11)

In the cradle having a charging terminal for charging the electric device by electrically connecting with a mounting portion on which the electronic device is mounted, and a charging terminal of the electronic device mounted on the mounting portion,
A communication unit for receiving data transmitted from the outside;
Image processing means for performing image processing on data received by the communication unit to generate projection image data;
A projection unit that projects the projection image data generated by the image processing unit;
A mounting state detecting means for detecting whether or not the electronic device is mounted on the mounting portion;
A cradle with a projection function, comprising projection determination means for determining at least one of projection start and end of the projection unit based on information detected by the placement state detection means.   2. The projection function according to claim 1, wherein the projection determination unit determines the projection start of the projection unit based on the information on the placement on the placement unit of the electronic device detected by the placement state detection unit. Cradle with.   The projection determination unit according to claim 1, wherein the projection determination unit determines the projection start of the projection unit based on information on the separation of the electronic device from the mounting unit detected by the mounting state detection unit. Cradle. The mounting state detection means detects an electrical connection between the charging terminal of the electronic device mounted on the mounting unit and the charging terminal of the cradle, and determines whether or not the electronic device is mounted on the mounting unit. Detect
2. The cradle with a projection function according to claim 1, wherein the projection determination unit determines the projection start of the projection unit based on the information on the placement of the electronic device detected by the placement state detection unit. A mounting unit on which the electronic device is mounted, a charging unit that is electrically connected to the charging terminal of the electronic device mounted on the mounting unit and charges the electronic device, and is transmitted from the outside A communication unit that receives data, an image processing unit that performs image processing on data received by the communication unit to generate projection image data, a projection unit that projects projection image data generated by the image processing unit, and Based on the information detected by the placement state detection means for detecting whether or not the electronic device is placed on the placement section and the information detected by the placement state detection means, at least one of projection start and end of the projection section is determined A cradle having projection determining means for
An electronic device that has transmission means for transmitting data to the communication unit of the cradle, is mounted on the mounting unit of the cradle, and is electrically connected to a charging terminal of the cradle;
A projection system comprising:   6. The projection system according to claim 5, wherein the electronic device has a display screen, and the data displayed on the display screen is projected by a projection unit of a cradle. The electronic device is a mobile phone,
The mounting state detection means detects that the mobile phone is detached from the mounting unit,
When the projection determining means determines that the mobile phone has received image data,
The projection system according to claim 6, wherein the projection determining unit determines a projection start of the image data received from the mobile phone. The electronic device is a portable image display device that displays data,
When the placement state detection means detects that the portable image display device is placed on the placement unit,
The projection system according to claim 6, wherein the projection determination unit determines a projection start of data received from the portable image display device. The electronic device is a television receiver that receives and displays television image data,
When the placement state detection means detects that the television receiver is placed on the placement unit,
The projection system according to claim 6, wherein the projection determination unit determines a projection start of data received from the portable image display device.   The projection system according to claim 6, wherein the electronic device is a portable game machine, and data displayed on a display screen of the portable game machine is projected by a projection unit of the cradle. The electronic device is a door phone indoor unit that communicates with the door phone indoor unit.
When the placement state detection means detects separation from the placement portion of the door phone indoor unit,
The projection system according to claim 6, wherein the projection determining unit determines a projection start of the data received from the doorphone indoor unit or the doorphone indoor unit.

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