JP2007074650A - Electronic device with projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the electronic device with a projector which properly judges whether a projection is possible or not and controls it. <P>SOLUTION: A mobile phone with a projector 10 inhibits (does not allow) a projection by a projector module 6 if a voltage of a battery 103 detected at a power supply circuit 107 becomes lower than a predetermined decision threshold value. The mobile phone with a projector 10 does not allow a start of a projection if a signal indicating an open operation of a lens cover 8 is not outputted at least. The mobile phone with a projector 10 terminates a projection if a continuous projection time by the projector module 6 reaches a time set as "continuous projection time" of a projector adjustment menu. The mobile phone with a projector 10 stops a display of a liquid crystal display 4 when performing a projection by the projector module 6. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electronic apparatus with a projector that projects an optical image.

  An electronic device having a projection function in a small device such as a cellular phone is known (see Patent Document 1). The mobile phone with a projector described in Patent Document 1 projects information on the palm of the caller while calling, or projects information on a wall surface while calling.

JP 2000-236375 A

  Even when a projection instruction is issued, it may be inconvenient if the projector performs projection.

The electronic device with a projector according to the present invention has a projection unit that projects an optical image, a determination unit that determines whether the projection unit can perform projection according to the state of the device, and (1) whether the projection is possible is determined by the determination unit. In this case, the projection is started in accordance with the projection instruction, while the projection is terminated in accordance with the projection end instruction. The projector includes a projection control unit for controlling the projection unit so as to prohibit the start of projection.
The projector-equipped electronic device may be further configured to be openable and closable, and may include a protective member that protects the projection unit in the closed state. In this case, the determination means can determine whether or not projection is possible when the protection member is opened, and can determine whether or not projection is possible when the protection member is closed.
The electronic apparatus with a projector may further include a time measuring unit that measures the continuous projection time by the projecting unit. In this case, the determination means can determine whether the projection is possible before the predetermined time is measured by the time measuring means, and can determine whether the projection is not possible when the predetermined time is measured by the time measuring means.
The electronic device with a projector may further include a voltage detection unit that detects a voltage of a battery that drives the device. In this case, the determination unit detects whether the voltage can be projected when a voltage greater than a predetermined value is detected by the voltage detection unit. If it is determined and a voltage less than a predetermined value is detected by the voltage detection means, it is possible to determine whether or not to project.
The electronic device with a projector may further include a folding mechanism that folds the device, and the determination unit in this case can also determine whether or not projection is possible according to the folding angle of the folding mechanism.

  According to the present invention, it is possible to provide an electronic device with a projector that appropriately determines and controls whether or not projection is possible.

  The best mode for carrying out the present invention will be described below with reference to the drawings. The projection system according to the present invention includes a mobile phone with a projector and a cradle. When the projector-equipped mobile phone is placed on the cradle, the cradle and the projector-equipped mobile phone are interface-connected, and communication and power supply are performed between them. The interface includes at least a control signal line (Control I / F), a data signal line (Data I / F), and a power supply line.

≪Mobile phone with projector≫
FIG. 1 is an external view of a projector-equipped mobile phone 10 according to an embodiment, where (a) is a front view, (b) is a side view, and (c) is a rear view. In FIG. 1, the casing of the projector-equipped mobile phone 10 includes an operation unit 1 and a display unit 2, and the operation unit 1 and the display unit 2 are supported by a rotatable hinge unit 3. That is, the projector-equipped mobile phone 10 is configured to be foldable with the hinge portion 3 as a rotation center. The hinge unit 3 is provided with a click mechanism (not shown), and the relative angle (folding angle) θ between the operation unit 1 and the display unit 2 is, for example, 0, 80, 90, and 150 degrees. Each click mechanism works. The folded state is θ = 0 degrees. In addition, even if it is not the click position mentioned above, the hinge part 3 is comprised so that it can hold | maintain at arbitrary angles.

  The operation unit 1 is provided with operation keys for receiving an operation input by a user. The operation keys include operation keys similar to those of a general mobile phone having a camera function, a mail transmission / reception function, an Internet connection function, and the like in addition to the main switch 14. For example, various operations such as an operation key 15 for instructing the start and end of a call, an operation key for inputting a telephone number and characters, a cursor key 16 for screen operation, a camera shooting mode, a mail transmission / reception mode, an Internet connection mode Operation keys for switching to the mode are included.

  In addition to the above-described operation keys, the operation unit 1 is further provided with an operation key 11 for switching to an operation mode (projector mode) for projecting an optical image using a projector module 6 described later. When the projection operation key 11 is pressed, the projector-equipped mobile phone shifts to the projector mode and projects an optical image by the projector module 6 onto a screen, a wall surface, or the like.

  The display unit 2 is provided with a liquid crystal display 4 on the front side and a projector module 6 and a camera module 7 on the back side. A slide-type lens cover 8 is further provided on the back side. FIG. 1C shows an open state of the lens cover 8, and when the lens cover 8 is slid down or operated in FIG. 1C, the lens cover 8 moves both lenses of the projector module 6 and the camera module 7 together. Close to cover.

  FIG. 2 is a block diagram illustrating a circuit configuration of the projector-equipped mobile phone 10 of FIG. In FIG. 2, on the operation unit 1 side of the projector-equipped mobile phone 10, a CPU 101, a memory 102, a microphone 105, an external interface (I / F) 106, a power supply circuit 107, a communication control unit 108, an antenna 109, an operation member 110, a speaker 111, and an opening / closing angle sensor 112, and a battery 103 and a memory card 104 are mounted.

  On the display unit 2 side, a liquid crystal display 4, a projector module 6, a camera module 7, and a speaker 201 are provided. As shown in FIG. 1C, the projector module 6 and the camera module 7 are arranged such that the aperture of the projection optical system and the aperture of the photographing optical system are arranged on the same plane, and the optical axes of both optical systems are parallel. is there.

  The CPU 101 sends a control signal to each part of the projector-equipped mobile phone 10 by performing a predetermined calculation using a signal input from each part constituting the projector-equipped mobile phone 10 based on the control program. , Control phone operation, camera operation, projector operation. The control program is stored in a nonvolatile memory (not shown) in the CPU 101. The CPU 101 further performs trapezoidal distortion correction (keystone correction) on the image data projected by the projector module 6 by image processing.

  The memory 102 is used as a work area for the CPU 101. The memory card 104 is composed of a non-volatile memory. According to an instruction from the CPU 101, for example, image data output from the camera module 7 or video / audio data input from the outside via the external interface 106 is written. Can be saved and read.

  The microphone 105 converts the collected sound into an electrical signal and sends it to the CPU 101. The audio signal is recorded on the memory card 104 during recording, and is sent to the communication control unit 108 during a call. The external interface (I / F) 106 transmits / receives data to / from a cradle described later or an external device connected to the cradle according to a command from the CPU 101. Data to be transmitted / received is video / audio data or a control signal for the projector-equipped mobile phone 10. The external interface 106 also includes a power supply line.

  Note that the external interface (I / F) 106 is controlled by the CPU 101 so that transmission / reception of data is interrupted while the projector module 6 is projecting, and transmission / reception is resumed when the projection of the projector module 6 is completed.

  The speaker 111 reproduces sound based on the sound signal output from the CPU 101. The operation member 110 includes the operation keys described above, and sends operation signals corresponding to the operation keys to the CPU 101.

  The communication control unit 108 includes a wireless transmission / reception circuit, and performs communication with another telephone or the like via a base station (not shown) according to a command from the CPU 101. The communication control unit 108 is configured to be able to transmit and receive text data such as e-mail, image data taken by the camera module 7, image data to be projected by the projector module 6 and the like in addition to telephone voice. The antenna 109 is a transmission / reception antenna of the communication control unit 108.

  The battery 103 is constituted by a rechargeable secondary battery, and supplies power to each unit in the projector-equipped mobile phone 10. The power supply circuit 107 includes a DC / DC conversion circuit, a charging circuit, and a voltage detection circuit. The power supply circuit 107 converts the voltage of the battery 103 to a voltage necessary for each part in the projector-equipped mobile phone 10, and the voltage of the battery 103 is low. When the capacity is low, the battery 103 is charged with a charging current supplied via the external interface 106.

  The power supply circuit 107 is controlled by the CPU 101 so that the charging of the battery 103 is interrupted while the projector module 6 is projecting, and the charging is resumed when the projection of the projector module 6 is completed.

  The opening / closing angle sensor 112 detects the rotation angle of the hinge unit 3, that is, the folding angle θ of the projector-equipped mobile phone 10, and sends a detection signal to the CPU 101. The liquid crystal display 4 displays information such as images and texts according to instructions from the CPU 101. The speaker 201 reproduces sound based on the sound signal output from the CPU 101 during a call.

(The camera module)
The camera module 7 includes a shooting lens (shooting optical system) 71, an image sensor 72, a lens driving circuit 73, and a shooting control circuit 74. As the image sensor 72, a CCD, a CMOS image sensor or the like is used. The imaging control circuit 74 controls driving of the image sensor 72 and the lens driving circuit 73 according to a command from the CPU 101 and performs predetermined image processing on an imaging signal (accumulated charge signal) output from the image sensor 72. Image processing includes white balance processing and gamma processing.

  The photographing lens 71 forms a subject image on the imaging surface of the image sensor 72. The imaging control circuit 74 causes the image sensor 72 to start imaging in response to an imaging start instruction, reads the accumulated charge signal from the image sensor 72 after the imaging is completed, performs the above image processing, and then performs CPU 101 and a communication control unit as image data. To 108.

  The lens driving circuit 73 drives a focus lens (not shown) constituting the photographing lens 71 forward and backward in the optical axis direction based on the focus adjustment signal output from the photographing control circuit 74. The lens driving circuit 73 drives the zoom lens (not shown) constituting the photographing lens 71 to advance and retreat in the optical axis direction (tele side or wide side) based on the zoom adjustment signal output from the photographing control circuit 74. . The focus adjustment amount and the zoom adjustment amount are instructed from the CPU 101 to the photographing control circuit 74.

(Camera focus adjustment)
The camera module 7 adjusts the focus of the photographing lens 71 by shifting the focus lens constituting the photographing lens 71 in the optical axis direction. When performing autofocus adjustment, the CPU 101 integrates high frequency components (so-called focus evaluation value) for the image signal corresponding to the focus detection area (for example, the center of the shooting screen) among the image signals captured by the image sensor 72. A focus adjustment signal is sent to the imaging control circuit 74 so as to maximize. The position of the focus lens that maximizes the focus evaluation value is a focus position that eliminates blurring of the edge of the subject image captured by the image sensor 72 and maximizes the contrast of the image.

(Camera zoom adjustment)
The camera module 7 adjusts the optical zoom of the photographing lens 71 by shifting the zoom lens constituting the photographing lens 71 in the optical axis direction. The CPU 101 sends a zoom adjustment signal to the imaging control circuit 74 in accordance with the zoom operation signal from the operation member 110.

(Projector module)
The projector module 6 includes a projection lens (projection optical system) 61, a liquid crystal panel 62, an LED light source 63, a projection control circuit 64, and a lens drive circuit 65. The projection control circuit 64 supplies a drive current to the LED light source 63 in accordance with a projection command output from the CPU 101. The LED light source 63 illuminates the liquid crystal panel 62 with brightness according to the supplied current.

  The projection control circuit 64 further generates a liquid crystal panel drive signal in accordance with the image data sent from the CPU 101, and drives the liquid crystal panel 62 with the generated drive signal. Specifically, a voltage corresponding to the image signal is applied to the liquid crystal layer for each pixel. In the liquid crystal layer to which a voltage is applied, the arrangement of liquid crystal molecules changes, and the light transmittance of the liquid crystal layer changes. Thus, the liquid crystal panel 62 generates an optical image by modulating the light from the LED light source 63 in accordance with the image signal.

  The projection lens 61 projects the light image emitted from the liquid crystal panel 62 onto a screen or the like. Based on the offset adjustment signal output from the projection control circuit 64, the lens driving circuit 65 drives the projection lens 61 to advance and retract in a direction orthogonal to the optical axis. Further, the lens driving circuit 65 drives the focus lens (not shown) constituting the projection lens 61 to advance and retreat in the optical axis direction based on the focus adjustment signal output from the projection control circuit 64. The lens driving circuit 65 further drives a zoom lens (not shown) constituting the projection lens 61 forward and backward in the optical axis direction based on the zoom adjustment signal output from the projection control circuit 64. The offset adjustment amount, the focus adjustment amount, and the zoom adjustment amount are instructed from the CPU 101 to the projection control circuit 64.

  The projector module 6 is controlled by the CPU 101 to interrupt projection when a call operation is performed during projection, and to resume projection when the call ends. Further, the projector module 6 is controlled by the CPU 101 so as to end the projection when the camera module 7 performs photographing.

(Projected image offset)
By shifting the projection lens 61 in a direction orthogonal to the optical axis, the emission direction of the light beam emitted from the projector module 6 changes, and the projection image is offset. In addition to shifting the projection lens 61, the projection image may be offset by shifting the liquid crystal panel 62 and the LED light source 63 in the direction perpendicular to the optical axis. That is, the offset of the projected image can be realized by changing the relative positional relationship between the projection lens 61 and the liquid crystal panel 62 in a direction perpendicular to the optical axis.

(Keystone correction of projected image)
When a part of the projection lens 61, the liquid crystal panel 62, and the LED light source 63 is shifted in a direction perpendicular to the optical axis, keystone correction is performed on the data to be projected according to the shift amount. Since the projection image changes to a trapezoidal shape only by giving the offset to the projection image, the CPU 101 performs electrical keystone correction by image processing to correct the projection image from a trapezoidal shape to a rectangular shape. The memory in the CPU 101 stores an initial correction value for correcting the projected image into a square shape in advance. The CPU 101 reads an initial correction value corresponding to the offset adjustment amount, performs keystone correction processing on the image data to be projected based on the read initial correction value on the memory 102, and outputs the image data after the keystone correction processing to the projection control circuit. 64.

(Focus adjustment of projected image)
By shifting the focus lens constituting the projection lens 61 in the optical axis direction, the projector module 6 adjusts the focus of the projected image. The CPU 101 sends a focus adjustment signal to the projection control circuit 64 in accordance with the operation signal from the operation member 110.

(Zoom adjustment of projected image)
The projector module 6 performs zoom adjustment of the projected image by shifting the zoom lens constituting the projection lens 61 in the optical axis direction. The CPU 101 sends a zoom adjustment signal to the projection control circuit 64 in accordance with the operation signal from the operation member 110.

(Projection source: source)
The projector module 6 receives the following source 1. ~ Source 3. Project and play back content based on either Whenever the source switching operation signal is input from the operation member 110, the CPU 101 changes the source 1. ~ Source 3. Projected image of source 1. → 2. → 3. → 1. Image data corresponding to each image is sent to the projector module 6 so as to be cyclically switched in the order of. However, if the memory card 104 is not attached to the projector-equipped mobile phone 10, the source 1. Is skipped. If no external device is connected to the external interface (I / F) 106, the source 3. Is skipped.

Source 1. 1. Reproduced image source based on data read from the memory card 104 2. Reproduced image source based on data received by the communication control unit 108 Reproduced image by data input from external interface (I / F) 106

  The CPU 101 uses the source 1. When the image corresponding to is projected, the image data with the newest recording date and time (the last recorded image data taken) is read sequentially from the memory card 104, and the read image data is sent to the projector module 6. Send it out. When text data is selected as the content data (for example, address information or mail information), data for projecting the text screen is sent to the projector module 6.

≪Cradle≫
FIG. 3 is a perspective view illustrating the cradle 20 and the projector-equipped mobile phone 10. In FIG. 3, the projector-equipped mobile phone 10 is placed in a folded state on the equipment placement portion 22 of the cradle 20. The device mounting portion 22 supports the projector-equipped mobile phone 10 while being tilted by 10 degrees from the vertical direction in a state where the projector-equipped mobile phone 10 is placed, and the projection optical system opening of the projector module 6 and the camera module 7 The aperture of the photographing optical system is configured not to be blocked. Thereby, the projection optical axis of the projector module 6 is 10 degrees upward from the horizontal direction. Further, the projected light flux from the projector module 6 is not distorted.

  The projector-equipped mobile phone 10 with the lens cover 8 open is configured to be able to project and shoot while the projector module 6 and the camera module 7 are mounted on the cradle 20.

  An operation member 21 is disposed on the cradle 20. The operation member 21 includes a main switch, a light source on / off switch, a projection source changeover switch, a cursor key for screen operation, and the like, and is configured to be able to operate the projector-equipped mobile phone 10 from the cradle 20.

  FIG. 4 is a block diagram illustrating a circuit configuration of the cradle 20. In FIG. 4, a cradle 20 includes a CPU 201, a memory 202, an operation member 21, a hard disk drive (HDD) 204, a power circuit 206, a detection switch 208, a projector interface (I / F) 210, and a stereo. A speaker system 209 and an external interface (I / F) 205 are provided, and a battery 207 and memory cards 211 and 212 are mounted, respectively.

  The CPU 201, which is a controller, sends a control signal to each part of the cradle 20 by performing a predetermined calculation using a signal input from each part of the cradle 20 based on a control program, thereby causing the cradle 20 to To control the operation. The control program is stored in a nonvolatile memory (not shown) in the CPU 201.

  The memory 202 is used as a working memory for the CPU 201. The operation member 21 sends an operation signal corresponding to each operation switch described above to the CPU 201.

  The memory cards 211 and 212 are different types of recording media each constituted by a nonvolatile memory. The memory cards 211 and 212 can individually write, save, and read data such as video / audio data in accordance with commands from the CPU 201.

  A hard disk drive (HDD) 204 is a recording device having a larger capacity than a memory card. A hard disk drive (HDD) 204 can write, save, and read data such as video / audio data in response to a command from the CPU 201. The hard disk drive (HDD) 204 is configured to be able to copy and store image data projected by the projector-equipped mobile phone 10 and to store history information of image data projected by the projector-equipped cellular phone 10. The

  An external interface (I / F) 205 transmits / receives data to / from an external device such as a personal computer (PC) according to a command from the CPU 201. Data to be transmitted / received includes data transmitted from the projector-equipped mobile phone 10, data stored in the cradle 20, data transmitted from an external device, and a control signal for the projector-equipped cellular phone 10. The stereo speaker system 209 performs stereo reproduction of the audio signal output from the CPU 201. The stereo speaker 209 (left 209L, right 209R) includes an amplifier circuit, and the diameter of each speaker is larger than that of the speaker 111 on the projector-equipped mobile phone 10 side, so that higher quality reproduction can be performed.

  The battery 207 is constituted by a rechargeable secondary battery, and supplies power to each part in the cradle 20. The power supply circuit 206 includes a DC / DC conversion circuit, a charging circuit, and a voltage detection circuit. The power supply circuit 206 converts the voltage of the battery 207 into a voltage necessary for each part in the cradle 20, and the battery 207 has a low voltage and a remaining capacity is reduced. In such a case, the battery 207 is charged with a current supplied from the commercial power source via the AC / DC adapter 23.

  The power supply circuit 206 is further configured to supply power to the projector-equipped mobile phone 10 mounted on the cradle 20. The capacity of the battery 207 is configured to be larger than the capacity of the battery 103 on the projector-equipped mobile phone 10 side, and the cradle 20 and the projector-equipped mobile phone 10 are powered by the power of the battery 207 even when a commercial power source is not connected to the cradle 20. Can be driven.

  The detection switch 208 is turned on when the projector-equipped mobile phone 10 is placed on the device placement unit 22 on the cradle 20, and sends a detection signal to the CPU 201. When the projector-equipped mobile phone 10 is not placed on the device placement unit 22, it is turned off and no detection signal is transmitted.

  Projector interface (I / F) 210 transmits / receives data to / from projector-equipped mobile phone 10 (external interface (I / F) 106) according to a command from CPU 201. Data transmitted from the projector-equipped mobile phone 10 includes video / audio data, address data, mail data, and the like. Data to be transmitted to the projector 10 is a control signal for the projector-equipped mobile phone 10. The projector interface (I / F) 210 includes a power supply line.

(Projector processing for projector-equipped mobile phones)
The flow of projector processing performed by the CPU 101 of the projector-equipped mobile phone 10 will be described with reference to the flowcharts of FIGS. The process shown in FIG. 5 starts when the battery 103 is loaded in the projector-equipped mobile phone 10. In step S1 of FIG. 5, the CPU 101 determines whether or not the main switch 14 is turned on. When the main switch 14 constituting the operation member 110 is pressed and held for 1 second or longer, the CPU 101 makes an affirmative determination in step S1, performs a predetermined power-on process, and proceeds to step S2. If the pressing operation is less than 1 second, a negative determination is made in step S1, and the determination process is repeated.

  In step S <b> 2, the CPU 101 performs an initial check of the projector module 6. Specifically, the CPU 101 sends a command to the projection control circuit 64, sets all the pixels of the liquid crystal panel 62 in a non-transmissive state, supplies a predetermined current to the LED light source 63, performs a self-check, and proceeds to step S3. By making all the pixels of the liquid crystal panel 62 non-transmissive and suppressing the current supplied to the LED light source 63 to be low, there is no discomfort to the user due to light emission at the time of checking.

  In step S3, the CPU 101 determines whether there is no abnormality. If the current value diagnosed by the projection control circuit 64 is within a predetermined range, the CPU 101 determines that the current value is normal and proceeds to step S4. If the current value is outside the predetermined range, the CPU 101 determines that the current value is abnormal and proceeds to step S7. move on.

  In step S7, the CPU 101 displays an alarm and proceeds to step S22 in FIG. An example of the alarm display is performed by blinking an LED lamp (notification lamp for a telephone) (not shown) when the folding angle θ = 0 degree is detected by the opening / closing angle sensor 112 (folded state). Further, when the folding angle θ ≠ 0 degree is detected by the opening / closing angle sensor 112, the message “Projector is abnormal” is displayed on the liquid crystal display 4.

  In step S <b> 4, the CPU 101 determines whether a control signal is transmitted from the cradle 20. When the control signal is received by the external interface (I / F) 106, the CPU 101 makes an affirmative decision in step S4 and proceeds to step S5. If the control signal is not received, the CPU 101 makes a negative decision in step S4. Proceed to S8.

  In step S5, the CPU 101 considers that the projector-equipped mobile phone 10 is placed on the device placement unit 22 on the cradle 20. In step S5, the CPU 101 switches to playback from the cradle 20 (stereo speaker 209) instead of playback by the speaker 111, and proceeds to step S6. Specifically, the transmission destination of the audio signal is switched from the speaker 111 to the cradle 20.

  In step S6, the CPU 101 proceeds to step S10 by rotating the projection data for transmission to the projection control circuit 64 by 180 degrees and turning it upside down.

  The CPU 101 that proceeds to step S8 considers that the projector-equipped mobile phone 10 is used alone. In step S8, the CPU 101 switches to reproduction by the speaker 111 and proceeds to step S9. Specifically, the transmission destination of the audio signal is switched from the cradle 20 to the speaker 111.

  In step S <b> 9, when the folding angle θ detected by the opening / closing angle sensor 112 is not 0 degree, 80 degrees, or 150 degrees, the CPU 101 rotates the projection data for transmission to the projection control circuit 64 by 180 degrees. Then, the process proceeds to step S10 so that it is turned upside down. When the detected folding angle θ is any of 0 degrees, 80 degrees, and 150 degrees, the projection data is transmitted to the projection control circuit 64 without being rotated.

  In step S10, the CPU 101 determines whether projection has been instructed. The CPU 101 receives an ON operation (pressing operation) signal from a light source ON / OFF switch (projection operation key) 11 constituting the operation member 110, or receives a signal indicating an opening operation of the lens cover 8, or the cradle 20. In any case, an affirmative determination is made in step S10 and the process proceeds to step S11. If at least a signal indicating the opening operation of the lens cover 8 is not input (a signal indicating a closing operation is input), the CPU 101 makes a negative determination in step S10 and proceeds to step S22 in FIG.

  In step S11, the CPU 101 sends a command to the projection control circuit 64 after delaying, for example, for 3 seconds, causes the image indicating the current time to be projected for a predetermined time (for example, 10 seconds), and then proceeds to step S12. At this time, the projection image is gradually brightened by controlling the current supplied to the LED light source 63 to gradually increase to a predetermined value. When the projector-equipped mobile phone 10 is not placed on the cradle 20 and the liquid crystal display 4 is displaying, the display on the liquid crystal display 4 is turned off.

  In step S12, the CPU 101 determines whether projection has been instructed again. The CPU 101 receives an ON operation (pressing operation) signal from the light source ON / OFF switch 11 constituting the operation member 110 while projecting an image indicating the current time, or an ON instruction from the cradle 20 is an external interface (I / F) 106, in either case, an affirmative determination is made in step S12 and the process proceeds to step S13. If none of the above signals and ON instructions are input, a negative determination is made in step S12 and the process proceeds to step S22 in FIG.

  In step S13, the CPU 101 sends a command to the projection control circuit 64 to start projecting a reproduced image instead of an image indicating the current time. In step S14, the CPU 101 reads the image data with the newest recording date from the memory card 104, and proceeds to step S15 in FIG. 6 using the read image data as reproduction image data. When the CPU 101 transmits the reproduction image data to the projection control circuit 64, a reproduction image based on the reproduction image data is projected. Note that, when audio data is stored in association with the data file of the image being projected, the CPU 101 reproduces audio based on the audio data. The reproduction speaker is a speaker that has been switched in step S5 or step S8.

  In step S15 in FIG. 6, the CPU 101 determines whether or not a frame advance / frame return operation has been performed. When an operation signal instructing frame advance or frame return is input from the operation member 110 or the external interface (I / F) 106 (cradle 20), the CPU 101 makes a positive determination in step S15 and returns to step S14 in FIG. Image data corresponding to the operation signal is read from the memory card 104, and the read image data is used as image data for reproduction. On the other hand, if neither of the operation signals instructing frame advance and frame return is input, the CPU 101 makes a negative determination in step S15 and proceeds to step S16.

  The CPU 101 treats an operation signal output from the screen operation cursor key 16 as a frame advance / frame return operation signal in a state where enlargement display (electronic zoom) is not performed. In addition, an operation signal output from the cursor key 16 in the enlarged display (electronic zoom) state is handled as a scroll operation signal.

  In step S16, the CPU 101 determines whether or not a source switching operation has been performed. When an operation signal instructing source switching is input from the operation member 110 or the external interface (I / F) 106 (cradle 20), the CPU 101 makes an affirmative decision in step S16 and proceeds to step S19 to perform an operation instructing source switching. If no signal is input, a negative determination is made in step S16 and the process proceeds to step S17.

  In step S <b> 17, the CPU 101 determines whether the end of projection has been instructed. The CPU 101 receives an off operation (pressing operation) signal from the light source on / off switch 11 constituting the operation member 110, receives a signal indicating the closing operation of the lens cover 8, or receives an off instruction from the cradle 20. In any case of being input via the external interface (I / F) 106, an affirmative determination is made in step S17 and the process proceeds to step S21. If none of the above signals and off instructions are input, a negative determination is made in step S17 and the process proceeds to step S18.

  In step S21, the CPU 101 sends a command to the projection control circuit 64, ends the projection of the reproduced image, and proceeds to step S22. If the display of the liquid crystal display 4 is turned off in step S11, the CPU 101 proceeding to step S22 returns the display of the liquid crystal display 4 to on and proceeds to step S23. If the display on the liquid crystal display 4 is not turned off in step S11, the process proceeds to step S23.

  In step S18, the CPU 101 determines whether the reproduction image data is a recorded image. The CPU 101 determines that the reproduction image data is source 1. If YES in step S18, the process returns to step S15, and the reproduction image data is the source 2. And source 3. If any of the above is satisfied, a negative determination is made in step S18, and the process returns to step S16.

  In step S19, the CPU 101 switches the image data to be projected (image data for reproduction) and proceeds to step S20. Specifically, every time the source switching operation is performed, the data read from the memory card 104 (source 1), the data received by the communication control unit 108 (source 2), and the external interface (I / F ) The data (source 3) input from 106 is cyclically switched, and the process proceeds to step S20. CPU 101 further includes source 1. When the data selection operation is performed in a state where is selected, the data read from the memory card 104 is cyclically switched in the order of image → address → mail → image. Address data is data constituting an address book, and mail data is data constituting mail in a mailbox.

  Here, when the image data to be projected is switched to the data (source 3) input from the external interface (I / F) 106, the CPU 101 sends a projection source request signal from the external interface (I / F) 106 to the cradle 20. Send it.

  In step S20, the CPU 101 determines whether or not the reproduction data after switching is a recorded image. The CPU 101 determines that the reproduction image data is source 1. If YES in step S20, the determination in step S20 is affirmative and the process returns to step S14 in FIG. 5 to read the data from the memory card 104 and use the read data as image data for reproduction. On the other hand, the CPU 101 determines that the reproduction image data is the source 2. And source 3. If any of the above is satisfied, a negative determination is made in step S20 and the process returns to step S16. In this case, determination of frame advance / return operation is unnecessary.

  In step S23, the CPU 101 determines whether or not the main switch 14 is turned off. If the main switch 14 constituting the operation member 110 is turned off (long press operation for 1 second or longer), an affirmative decision is made in step S23 and the process proceeds to step S24. If the main switch 14 is not turned off, step S23 is denied. The determination is made, and the process returns to step S4 in FIG. In step S24, the CPU 101 performs a predetermined power-off process and ends the process of FIG.

  Note that even during the processing in FIGS. 5 and 6, if the voltage of the battery 103 detected by the power supply circuit 107 falls below a predetermined determination threshold necessary for projection, the CPU 101 prohibits projection by the projector module 6. It is configured as follows. In the prohibited state, the projection being projected is terminated, and the projection is not started even if a projection instruction is given.

  Further, even during the processing in FIG. 5 and FIG. 6, the CPU 101 is configured to automatically turn off the power when the projection time continues for a predetermined time without an end instruction or an operation signal. Specifically, the CPU 101 forcibly performs the processes of step S21, step S22, and step S24, and ends the processes shown in FIGS. The predetermined time in this case is set as “continuous projection time” in a “menu screen” to be described later.

(Cradle main processing)
The flow of the main process performed by the CPU 201 of the cradle 20 described above will be described with reference to the flowchart of FIG. The process according to FIG. 7 starts when the main switch constituting the operation member 21 is turned on. In step S51 of FIG. 7, the CPU 201 determines whether or not the detection switch 208 is turned on. When the detection signal is input from the detection switch 208 (detection switch on), the CPU 201 makes an affirmative decision in step S51 and proceeds to step S52, and when the detection signal is not input from the detection switch 208 (detection switch off). In step S51, a negative determination is made, and the process proceeds to step S59.

  In step S52, the CPU 201 transmits a control signal from the projector interface (I / F) 210 to the projector-equipped mobile phone 10, and proceeds to step S53. In step S53, the CPU 201 determines whether a projection source is requested from the projector-equipped mobile phone 10. When the projection source request signal is received by the projector-equipped mobile phone interface (I / F) 210, the CPU 201 makes a positive determination in step S53 and proceeds to step S54. When the projection source request signal is not received, A negative determination is made in step S53, and the process proceeds to step S59.

  When the audio signal is transmitted from the projector-equipped mobile phone 10, the CPU 201 in the case of proceeding to step S <b> 59 causes the stereo speaker 209 to reproduce the audio based on the audio data received by the projector-equipped mobile phone interface (I / F) 210. .

  In step S <b> 54, the CPU 201 reads out the image data with the newest recording date from the memory card 211 and sets the read image data as image data to be transmitted to the projector-equipped mobile phone 10. When the CPU 201 transmits the image data to the projector-equipped mobile phone 10, a reproduced image based on the image data is projected by the projector-equipped mobile phone 10. When audio data is stored in association with the data file of the image being projected, the CPU 201 causes the stereo speaker 209 to reproduce the audio based on the audio data in stereo.

  In step S55, the CPU 201 determines whether or not a frame advance / frame return operation has been performed. When an operation signal instructing frame advance or frame return is input from the operation member 21, the CPU 201 makes an affirmative decision in step S55, returns to step S54, and reads and reads image data corresponding to the operation signal from the memory card 211. The image data is image data to be transmitted to the projector-equipped mobile phone 10. On the other hand, if neither of the operation signals instructing frame advance and frame return is input from the operation member 21, the CPU 201 makes a negative determination in step S55 and proceeds to step S56.

  In step S56, the CPU 201 determines whether a source switching operation has been performed. When an operation signal instructing source switching is input from the operation member 21, the CPU 201 makes a positive determination in step S56 and proceeds to step S61. When an operation signal instructing source switching is not input, the CPU 201 makes a negative determination in step S56. Then, the process proceeds to step S57.

  In step S57, the CPU 201 determines whether or not the projection source request has been completed. When a signal requesting a projection source is no longer input via the projector-equipped mobile phone interface (I / F) 210, the CPU 201 makes an affirmative decision in step S57 and proceeds to step S59, where the request for the projection source is continued. If yes, a negative determination is made in step S57 to proceed to step S58.

  In step S58, the CPU 201 determines whether the image data transmitted to the projector-equipped mobile phone 10 is a recorded image. If the image data being transmitted is a recorded image recorded in any of the memory card 211, the memory card 212, and the hard disk drive (HDD) 204, the CPU 201 makes a positive determination in step S58 and returns to step S55. If the image data being transmitted is an image input from the external interface (I / F) 205, the CPU 201 makes a negative determination in step S58 and returns to step S56.

  In step S61, the CPU 201 switches image data to be transmitted to the projector-equipped mobile phone 10, and proceeds to step S62. Specifically, every time the source switching operation is performed, image data read from the memory card 211, image data read from the memory card 212, image data read from the hard disk drive (HDD) 204, and an external interface ( The image data input from (I / F) 205 is sequentially switched, and the process proceeds to step S62. If no memory card is attached to the cradle 20, reading of image data from the corresponding recording medium is skipped.

  In step S62, the CPU 201 determines whether the image data to be transmitted to the projector-equipped mobile phone 10 is a recorded image. When the image data to be transmitted is a recorded image recorded in any of the memory card 211, the memory card 212, and the hard disk drive (HDD) 204, the CPU 201 makes a positive determination in step S62 and returns to step S54. Image data is read from the recording medium to be read, and the read image data is set as image data to be transmitted to the projector-equipped mobile phone 10. On the other hand, when the image data to be transmitted is switched to the image data input from the external interface (I / F) 205, the CPU 201 makes a negative determination in step S62 and returns to step S56. In this case, determination of frame advance / return operation is unnecessary.

  In step S59, the CPU 201 determines whether or not the main switch is turned off. When the main switch constituting the operation member 21 is turned off, the CPU 201 makes an affirmative decision in step S59 and proceeds to step S60. If the main switch is not turned off, the CPU 201 makes a negative decision in step S59 and returns to step S51. In step S60, the CPU 201 performs a predetermined power-off process and ends the process of FIG.

(Menu settings for projector-equipped mobile phones)
The projector-equipped mobile phone 10 according to the present embodiment notifies an incoming call or mail by a projected image by the projector module 6. A description will be given of the settings that are made on the projector-equipped mobile phone 10 for this notification.

  The projector-equipped mobile phone 10 displays a “menu screen” on the liquid crystal display 4 when the operation key 12 constituting the operation member 110 is pressed. The menu screen includes an Internet connection menu (referred to as screen A.), a projector adjustment menu (referred to as screen B.), an incoming call setting menu (referred to as screen C.), and the like. In response, the Internet connection menu (screen A.) is displayed first.

  When the screen operation cursor key 16 is operated in the right direction in this state, the projector-equipped mobile phone 10 displays a menu screen to be displayed on the liquid crystal display 4 on the screen A.B. → Screen B. → Screen C. ... → screen A. Switch cyclically to. When the cursor key 16 is operated in the left direction, the projector-equipped mobile phone 10 displays a menu screen displayed on the liquid crystal display 4 on the screen A.A. →, ..., screen C. → Screen B. → Screen A. Switch cyclically to. An operation signal in the left-right direction by the cursor key 16 during menu screen display corresponds to a menu screen selection instruction.

  FIG. 8 is a diagram illustrating a projector adjustment menu (screen B) in the menu screen. In FIG. 8, items such as brightness, wall color, trapezoid (vertical), trapezoid (horizontal), focus, continuous projection time, automatic lighting (timer), and automatic lighting (folding) are displayed, and the cursor is placed at the top "luminance" Is displayed (indicated by a frame). When the cursor key 16 for screen operation is operated downward in this state, the projector-equipped mobile phone 10 moves the cursor position downward. When the cursor key 16 for screen operation is operated upward, the projector-equipped mobile phone 10 moves the cursor position upward. An operation signal in the vertical direction by the cursor key 16 during menu screen display corresponds to an item selection instruction.

  “Luminance” represents the projection brightness by the projector module 6, and the projector-equipped mobile phone 10 (CPU 101) instructs the projection control circuit 64 to increase or decrease the current supplied to the LED light source 63 according to the set content. “Wall color” represents the color of the screen or wall projected by the projector module 6, and the projector-equipped mobile phone 10 (CPU 101) notifies the projection control circuit 64 to change the color temperature adjustment value according to the set content. Instruct. The projection control circuit 64 adjusts the RGB signal ratio by the liquid crystal panel 62 to make the color of the image projected on the screen easy to see for the observer.

  The “trapezoid (vertical)” represents vertical keystone correction, and the projector-equipped mobile phone 10 (CPU 101) performs keystone correction processing in the vertical direction according to the set content. The “trapezoid (horizontal)” represents horizontal keystone correction, and the projector-equipped mobile phone 10 (CPU 101) performs keystone correction processing in the horizontal direction according to the set content.

  “Focus” represents focus adjustment of the projected image, and the projector-equipped mobile phone 10 (CPU 101) sends a focus adjustment signal to the projection control circuit 64 in accordance with the set content. “Continuous projection time” corresponds to the time measured for auto power-off described above, and the projector-equipped mobile phone 10 (CPU 101) performs auto power-off processing according to the set content.

  “Automatic lighting (timer)” represents a timer operation for automatically starting projection, and the projector-equipped mobile phone 10 (CPU 101) performs timer projection according to the set content. In the timer projection, the projector module 6 automatically starts projection at a preset time. After the start of projection, the projector-equipped mobile phone 10 (CPU 101) ends the projection in response to the projection operation key 11 being pressed or the continuous projection time elapses, whichever comes first.

  “Automatic lighting (folding)” represents an operation of automatically starting projection in response to a change operation of the folding angle θ, and the projector-equipped mobile phone 10 (CPU 101) performs projection by the projector module 6 in accordance with this setting content. To start. For example, when the projection operation key 11 is pressed and then the folding angle θ = 80 degrees, the projector module 6 starts projection. After the start of projection, the projector-equipped mobile phone 10 (CPU 101) ends the projection in response to the projection operation key 11 being pressed or the continuous projection time elapses, whichever comes first.

  When the operation key 13 constituting the operation member 110 is pressed, the projector-equipped mobile phone 10 highlights the setting contents related to the item selected by the cursor at that time. FIG. 8 shows an example in which “luminance” is highlighted and other items are darkly displayed. According to FIG. 8, the set brightness adjustment state is indicated by a bar graph. When the cursor key 16 for screen operation is operated leftward, the projector-equipped mobile phone 10 changes the content of the bar graph to the left (low luminance side), and the projection luminance by the projector module 6 is changed from the current set luminance. Change it lower.

  On the contrary, when the cursor key 16 for screen operation is operated in the right direction, the projector-equipped mobile phone 10 changes the content of the bar graph in the right direction (high luminance side), and changes the projection luminance by the projector module 6 to the current level. Change the brightness higher than the set brightness. An operation signal in the left-right direction by the cursor key 16 in a state where the setting content is highlighted corresponds to a setting change instruction.

  When the set content is not a control amount that can be changed continuously, the projector-equipped mobile phone 10 indicates the set state with a cursor. For example, in the state where “wall color” is highlighted, when the cursor key 16 for screen operation is operated leftward, the cursor is moved leftward from black → red → yellow → white to When the cursor key 16 is operated in the right direction, the cursor is moved in the right direction from white to yellow to red to black.

  On the menu screen, the setting contents relating to all items before the operation key 13 is pressed and the setting contents relating to items not selected by the cursor (other items except “brightness” in FIG. 8) are darkly displayed. .

  When the operation key 13 constituting the operation member 110 is pressed again, the projector-equipped mobile phone 10 stores the setting change content, ends the highlight display, and returns the setting content regarding the item to the dark display.

  FIG. 9 is a diagram illustrating an incoming call setting menu (screen C.) in the menu screen. In FIG. 9, items such as notification by projector, notification by voice, notification by vibration, notification time, projection of mail contents, and projection of received image are displayed, and the cursor is placed at the top “notify by projector” Yes (displayed in a frame). When the cursor key 16 for screen operation is operated downward in this state, the projector-equipped mobile phone 10 moves the cursor position downward. When the cursor key 16 for screen operation is operated upward, the projector-equipped mobile phone 10 moves the cursor position upward.

  “Notify by projector” represents notification of incoming call by the projector module 6, and the projector-equipped mobile phone 10 (CPU 101) sends an instruction to the projection control circuit 64 in accordance with the set content. If “yes” is selected, the projector module 6 overlays the incoming call notification information on the projected image being projected.

  “Notify by voice” represents an incoming call notification by the speaker 111, and the projector-equipped mobile phone 10 (CPU 101) causes the speaker 111 to reproduce in accordance with the setting content. The reproduction sound is based on voice guidance data stored in advance or ring melody data stored in advance.

  “Notify by vibration” represents an incoming call notification by a vibration generator (not shown), and the projector-equipped mobile phone 10 (CPU 101) generates vibration in accordance with the set content. The “notification time” represents a time during which the incoming call notification is continued, and the projector-equipped mobile phone 10 (CPU 101) continues the incoming call notification according to the set content.

  “Project mail contents” represents an operation of projecting mail contents according to the mail display operation, and the projector-equipped mobile phone 10 (CPU 101) projects the mail contents on the projector module 6 according to the setting contents. The mail content is displayed on the liquid crystal display 4.

  “Project the received image” represents an operation of projecting the received image in accordance with the display operation, and the projector-equipped mobile phone 10 (CPU 101) projects the received image on the projector module 6 in accordance with the setting contents. The received image is displayed on the liquid crystal display 4.

  When the operation key 13 constituting the operation member 110 is pressed, the projector-equipped mobile phone 10 highlights the setting contents related to the item selected by the cursor at that time. FIG. 9 shows an example in which “notify by projector” is highlighted and dark is displayed for other items. According to FIG. 9, the setting state is indicated by a cursor. When the cursor key 16 for screen operation is operated leftward, the projector-equipped mobile phone 10 moves the cursor leftward. On the contrary, when the cursor key 16 for screen operation is operated rightward, the projector-equipped mobile phone 10 moves the cursor rightward.

  When the operation key 13 constituting the operation member 110 is pressed again, the projector-equipped mobile phone 10 stores the setting change content, ends the highlight display, and returns the setting content regarding the item to the dark display.

(Incoming call processing for projector-equipped mobile phones)
The flow of the incoming call processing performed by the CPU 101 of the projector-equipped mobile phone 10 set as described above will be described with reference to the flowchart of FIG. The process shown in FIG. 10 starts when an incoming call notification is received from the communication control unit 108 during the projector process. In step S701 in FIG. 10, the CPU 101 searches for a transmission source (sender in the case of mail). The CPU 101 accesses a database provided in a non-volatile memory (not shown) in the CPU 101, searches for a calling telephone number (or outgoing mail address in the case of mail), and proceeds to step S702.

  In step S702, the CPU 101 makes an affirmative decision in step S702 if the outgoing telephone number (mail address in the case of mail) is registered in the database, and proceeds to step S703. If not registered, the CPU 101 denies step S702. Determination is made and the process proceeds to step S704.

  In step S703, the CPU 101 reads registration information from the database and proceeds to step S704. In the case of an incoming call, the registrant name corresponding to the outgoing telephone number is read. In the case of an incoming mail, the registrant name corresponding to the outgoing mail address is read out.

  In step S704, the CPU 101 determines whether the projector is on. The CPU 101 makes an affirmative decision in step S704 when content is projected on the projector module 6, and proceeds to step S705. If not projected on the projector module 6, the CPU 101 proceeds to step S706 after making a negative decision in step S704.

  In step S705, the CPU 101 overlaps the incoming notifications and proceeds to step S710. Specifically, a command is sent to the projection control circuit 64 so as to overlay the character string indicating the registrant name on the content data being projected so as not to disturb the projected image. As a result, the incoming call notification by the character string is projected on a part of the projected image. In the case of incoming calls, if the outgoing phone number is not registered in the database, the character string indicating the outgoing phone number is shown. If the outgoing email address is not registered in the database in the case of mail reception, the outgoing email address is indicated. Each character string is projected onto the content data being projected.

  In step S706, the CPU 101 determines whether or not the incoming call projection setting is set. If “notify by projector” is set to “yes” in the incoming call setting menu, CPU 101 makes an affirmative decision in step S706 to proceed to step S707, and “notify by projector” is set to “no” in the incoming call setting menu. If yes, a negative determination is made in step S706, and the process proceeds to step S709.

  In step S707, the CPU 101 sends a command to the projection control circuit 64, displays an incoming call notification image on the liquid crystal panel 62, and proceeds to step S708. The incoming call notification image is a reproduction image based on image data associated with each registrant name on the database, and any one of a still image, a moving image, an icon, an animation, a text image, and the like is prepared in advance. When the transmission source is not registered in the database, a reproduced image by general-purpose image data prepared in advance is displayed. In this case, incoming calls from unregistered senders are notified with a common playback image.

  In step S708, the CPU 101 sends a command to the projection control circuit 64, turns on the LED light source 63, and proceeds to step S710. Thereby, the incoming call notification image is projected from the projector module 6. CPU 101 determines that “notify by voice” is set to “yes” in the incoming call setting menu or when “notify by vibration” is set to “yes”. A speaker and a vibration generator (not shown) are controlled so as to notify. The voice is a reproduced sound based on voice data associated with each registrant name on the database, and any one of a ringing melody, a guidance message, a sound effect, and the like is prepared in advance. When the transmission source is not registered in the database, general-purpose audio data prepared in advance is reproduced. In this case, an incoming call from an unregistered caller is notified with a common playback sound.

  In step S709, the CPU 101 displays an incoming call notification on the liquid crystal display 4, and proceeds to step S710. If a sub LCD (liquid crystal display) is provided, the sub LCD may be displayed. If “Yes” is set for “Voice notification” in the incoming call setting menu or if “Notification by vibration” is set to “Yes”, the speaker will be notified according to each setting. And a vibration generator (not shown) are controlled.

  The CPU 101 that has notified the incoming call shifts to a telephone operation when a telephone response operation is performed (when the operation key 15 constituting the operation member 110 is pressed). When the incoming call notification image (including the overlay projection) is projected by the projector module 6, the projection by the projector module 6 is terminated and then the operation proceeds to the telephone operation. In this description, the description of the telephone operation process is omitted.

  In step S710, the CPU 101 that has notified the incoming mail determines whether the mail text display operation has been performed. When the operation key 13 constituting the operation member 110 is pressed, the CPU 101 makes an affirmative determination in step S710 and proceeds to step S711. If the operation key 13 is not pressed, the CPU 101 makes a negative determination in step S710 and proceeds to step S714. move on.

  In step S711, the CPU 101 determines whether mail content projection is set. If “project mail content” is set to “Yes” in the incoming call setting menu, the CPU 101 makes an affirmative decision in step S711 and proceeds to step S712. In the incoming call setting menu, “project mail content” is “ If "No" is set, a negative determination is made in step S711, and the process proceeds to step S713.

  In step S <b> 712, the CPU 101 sends a command to the projection control circuit 64 to display the mail text on the liquid crystal panel 62. As a result, the mail text is projected from the projector module 6. The CPU 101 is configured to display the received image on the liquid crystal panel 62 in response to an operation for opening the pasted image file when “project received image” is set to “Yes” in the incoming call setting menu. Yes. As a result, the received image can be projected by the projector module 6. When the CPU 101 performs the projection in this manner, the process shown in FIG.

  In step S713, the CPU 101 causes the liquid crystal display 4 to display the mail text, ends the projection by the projector module 6, and ends the processing in FIG. If a sub LCD (liquid crystal display) is provided, the sub LCD may be displayed.

  In step S <b> 714, the CPU 101 determines whether or not an elapsed time since notification of an incoming call has reached a predetermined time. The predetermined time is a time set as “notification time” in the incoming call setting menu. When the CPU 101 reaches the predetermined time, the CPU 101 makes an affirmative determination in step S714 and proceeds to step S715. If the predetermined time is not reached, the CPU 101 returns to step S710. When returning to step S710, the incoming call notification is continued.

  In step S715, the CPU 101 ends the projection (incoming call notification) by the projector module 6 and ends the processing in FIG.

  When the projector-equipped mobile phone 10 is set to a well-known manner mode, the CPU 101 controls to proceed to step S709 even when the incoming call projection setting is set. That is, even when “notify by projector” is set to “yes” in the incoming call setting menu, projection by the projector module 6 (incoming call notification) is prohibited, and the incoming call notification is performed by the liquid crystal display 4. If the projection operation key 11 is pressed in the manner mode, projection by the projector module 6 is started based on the projection operation.

According to the embodiment described above, the following operational effects can be obtained.
(1) Since the projector-equipped mobile phone 10 checks the projector module 6 when the main switch is turned on (step S2), in the case of abnormality, the user is notified before the projection is instructed (step S7). )it can.

(2) Since the projector-equipped mobile phone 10 does not permit projection until projection is instructed (projection is not started), the projection is automatically started after the main switch is turned on, so that the user is ready. Projection light is not output before.

(3) The projector-equipped mobile phone 10 is configured to prohibit (not permit) projection by the projector module 6 when the voltage of the battery 103 detected by the power supply circuit 107 falls below a predetermined determination threshold. In general, since a large amount of current is consumed at the time of projection, the voltage of the battery 103 decreases more quickly when projection is performed while the battery 103 is exhausted. By prohibiting projection and suppressing current consumption, the battery 103 can be made longer.

(4) The projector-equipped mobile phone 10 does not determine that it is a projection instruction if at least a signal indicating the opening operation of the lens cover 8 is not output (determination is negative in step S10), so that projection starts when the lens cover 8 is closed. Is not permitted, and there is no possibility of performing a useless projection operation.

(5) Since the projector module 6 and the camera module 7 are protected by the common lens cover 8, the structure can be simplified as compared with the case where the lens cover is provided separately.

(6) The projector-equipped mobile phone 10 projects the projection when the continuous projection time by the projector module 6 reaches the time set as the “continuous projection time” in the projector adjustment menu even during the processing shown in FIGS. Since the auto power-off is configured to terminate (prohibit), the temperature rise exceeding the allowable range and the current consumption exceeding the allowable range can be suppressed. The CPU 101 performs timing.

(7) Since the projector-equipped mobile phone 10 turns off the display of the liquid crystal display 4 when performing projection by the projector module 6 (for example, step S11), the battery 103 is held longer by suppressing current consumption. Can be made.

(Modification 1)
In FIG. 5, when it is determined that the projector-equipped mobile phone 10 is placed on the device placement unit 22 on the cradle 20 (Yes in step S4), the brightness of the projected image is normal (the projector-equipped mobile phone 10 is a single unit). It may be made higher (when used in). In this case, the CPU 101 sends a command to the projection control circuit 64 to increase the supply current to the LED light source 63 by a predetermined current from the normal level.

  When the CPU 101 having increased the brightness of the projected image determines that the projector-equipped mobile phone 10 is used alone (No at step S4), the CPU 101 lowers the brightness of the projected image compared to when it is used on the cradle 20. . In this case, the CPU 101 sends a command to the projection control circuit 64 to reduce the supply current to the LED light source 63 to the normal level. By suppressing current consumption when the projector-equipped mobile phone 10 is used alone, the battery 103 can be made longer.

(Modification 2)
In step S11 of FIG. 5, the projection indicating the current time is performed for 10 seconds. Instead of the current time, information such as news and stock prices obtained from the Internet, a message message prepared in advance, Information such as unread mail may be projected. The projection time is not limited to 10 seconds, but can be changed to any time in advance. Further, instead of projecting for a predetermined time (10 seconds) from the projection instruction, the projection may be continued while the projection instruction is continued.

(Modification 3)
Although the example in which the CPU 201 is mounted on the cradle 20 has been described, a configuration in which the CPU is not mounted may be employed. In this case, the CPU 101 of the projector-equipped mobile phone 10 is placed on the cradle if the power is supplied from the cradle without the CPU via the power line of the external interface (I / F) 106. If the power is not supplied, it is determined that the projector-equipped mobile phone 10 is used alone.

(Modification 4)
In the above description, whether or not the incoming call notification is performed by the projection image by the projector module 6 is commonly performed for all incoming calls, but whether or not the projector notifies the incoming call is set for each transmission source. You may comprise as follows. In this case, for each registrant name on the database, registration / not-notification using a projector is registered. Accordingly, the incoming call can be notified by a projection image by the projector module 6 by the transmission source, or the incoming call can be notified by display by the liquid crystal display 4.

(Modification 5)
In FIG. 10, when the incoming projection is set (Yes in step S706), a condition determination for projecting the incoming notification image from the projector module 6 may be added. For example, when it is determined that the projector-equipped mobile phone 10 is opened at the folding angle θ = 80 degrees and the projector-equipped mobile phone 10 is used alone, the process proceeds to step S707 and step S708, and the incoming call notification image from the projector module 6 And the display on the liquid crystal display 4 is turned off. Further, when it is determined that the projector-equipped mobile phone 10 is placed on the cradle 20 in a folded state, the process proceeds to step S707 and step S708, and the incoming call notification image is projected from the projector module 6 and the display on the liquid crystal display 4 is displayed. Turn off.

  On the other hand, if the folding angle θ of the projector-equipped mobile phone 10 exceeds 80 degrees and it is determined that the projector-equipped mobile phone 10 is used alone, the process proceeds to step S709, and the incoming call by the projector module 6 is performed. The incoming call notification is displayed on the liquid crystal display 4 without projecting the notification image. If it is determined that the projector-equipped mobile phone 10 is in a folded state (θ = 0 degrees) and the projector-equipped mobile phone 10 is used alone, the incoming call notification image by the projector module 6 is not projected, and the liquid crystal The display by the display unit 4 is also kept off. As a result, when the user can be regarded as observing the liquid crystal display 4 (θ> 80 degrees), or when the portable projector-equipped mobile phone 10 is housed in a bag or the like, the projector module 6 projects the image. It can be controlled not to.

(Modification 6)
When the folded projector mobile phone 10 projects an incoming call notification image by the projector module 6 (steps S707 and S708), the projection of the incoming call notification image by the projector module 6 is terminated when the folding angle θ ≠ 0 degree. You may comprise as follows. As a result, when the user performs an opening operation from the folded state in order to perform the mail text display operation, the projection automatically ends, so that there is no possibility that the projected light flux may accidentally enter the eye and feel dazzling.

(Modification 7)
In the above embodiment, the “menu screen” is displayed only on the liquid crystal display 4. However, the projector module 6 may be configured to project the same screen. In this case, when the operation key 12 is pressed, the projector-equipped mobile phone 10 displays the “menu screen” on the liquid crystal display 4 and also projects the “menu screen” on the projector module 6. By projecting the “menu screen”, the setting contents of the menu are also shown to the observer of the projected image. On the other hand, the user who operates the operation member 110 can operate while viewing the “menu screen” displayed on the liquid crystal display 4 close to the operation member 110, so that the “menu” projected at a position away from the operation member 110. Usability is better than operating while looking at the screen. In addition, the changes made in the “Projector Adjustment Menu” such as “Luminance”, “Wall Color”, “Trapezoid”, and “Focus” are immediately reflected in the projected image, allowing operation while checking the adjustment results. it can.

  The timing for displaying (projecting) the same screen on the liquid crystal display 4 and the projector module 6 is simultaneously performed on both the liquid crystal display 4 and the projector module 6 in accordance with the pressing operation of the operation key 12 as described above. It may be as follows. That is, after the “menu screen” is displayed only on the liquid crystal display 4 according to the pressing operation of the operation key 12, the “menu screen” is further displayed according to the item selection instruction (operation signal by the cursor key 16). To be projected on

  Although the projector-equipped mobile phone 10 is exemplified as the projector-equipped electronic device, the present invention may be applied to a camera with a projector, a television with a projector, a radio with a projector, and the like.

  The above description is merely an example, and the interpretation of the invention is not limited to the correspondence between the components of the above-described embodiment and the components of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external view of a projector-equipped mobile phone according to an embodiment, where (a) is a front view, (b) is a side view, and (c) is a rear view. It is a block diagram explaining the circuit structure of the mobile telephone with a projector of FIG. It is a perspective view explaining a mobile phone with a cradle and a projector. It is a block diagram explaining the circuit structure of a cradle. It is a flowchart explaining the flow of the projector process performed by CPU of the mobile phone with a projector. It is a flowchart explaining the flow of the projector process performed by CPU of the mobile phone with a projector. It is a flowchart explaining the flow of the main process performed by CPU of a cradle. It is a figure which illustrates a projector adjustment menu among menu screens. It is a figure which illustrates an incoming call setting menu among menu screens. It is a flowchart explaining the flow of the incoming call process performed by CPU of the mobile phone with a projector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 ... Hinge part 4 ... Liquid crystal display 6 ... Projector module 7 ... Camera module 8 ... Lens cover 10 ... Mobile phone with projector 20 ... Cradle 21, 110 ... Operation member 64 ... Projection control circuit 101, 201 ... CPU
103 ... Battery 107 ... Power supply circuit 112 ... Opening / closing angle sensor

Claims (5)

Projection means for projecting an optical image;
Determination means for determining whether or not projection by the projection means is possible according to the state of the device;
(1) When it is determined that the projection is possible by the determination unit, the projection is started according to the projection instruction, while the projection is ended according to the projection end instruction. (2) The projection is determined by the determination unit. If so, an electronic device with a projector, comprising: a projection control unit configured to control the projection unit so as to end the projection during projection and prohibit the start of projection during non-projection. The electronic device with a projector according to claim 1,
A protective member configured to be openable and closable, and protecting the projection means in the closed state;
The electronic device with a projector, wherein the determination unit determines whether projection is possible when the protection member is opened, and determines whether projection is possible when the protection member is closed. The electronic device with a projector according to claim 1,
Further comprising time measuring means for measuring the continuous projection time by the projecting means,
The electronic device with a projector, wherein the determining unit determines whether projection is possible before the predetermined time is measured by the time measuring unit, and determines whether projection is possible when the predetermined time is measured by the time measuring unit. The electronic device with a projector according to claim 1,
A voltage detecting means for detecting a voltage of a battery that drives the device;
The determination unit determines whether or not projection is possible when the voltage detection unit detects a voltage greater than or equal to a predetermined value, and determines whether or not to project when a voltage lower than the predetermined value is detected by the voltage detection unit. An electronic device with a projector. The electronic device with a projector according to claim 1,
A folding mechanism for folding the device;
The electronic device with a projector, wherein the determination unit determines whether or not projection is possible according to a folding angle of the folding mechanism.

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