JP5169380B2 - Projection apparatus, projection method, and program - Google Patents

Description

  The present invention relates to a projection apparatus, a projection method, and a program suitable for a projector whose projection direction can be adjusted by electric legs.

Conventionally, there has been considered a technique for adjusting the projection direction by controlling the posture by extending and contracting an electric leg portion with a projector device. (For example, Patent Document 1)
JP 2000-241875 A

  In recent years, portability is sometimes required due to the fact that it is frequently used for presentations in combination with a personal computer, and the housing of a projector device is also required to be thin. In many cases, a connector portion for connecting a power cable or a cable for inputting an image signal is usually provided on the back side opposite to the surface on which the projection lens of the housing is disposed. Therefore, when the casing of the projector apparatus is thinned, the connector portion must be disposed at a low position from the bottom face of the casing.

  When such a projector device is used in a projection environment in which the position of the stand for grounding the projector device is close to the screen to be projected, and the position of the stand is lower than the screen, It is necessary to lengthen the leg part and set the elevation angle in the projection direction to be large, which may make it difficult to adjust the projection direction because the connector part of the cable protruding from the back of the projector housing interferes with the base. Many thoughts.

  In this respect, if the projection direction of the projector apparatus is manually set by adjusting the length of the leg, the user is in a close position where the projector apparatus can be directly operated and can be easily handled. It becomes.

  On the other hand, as represented by the technique described in Patent Document 1, in the case of a projector apparatus having legs that are electrically expanded and contracted, a user remotely controls the projection direction of the projector apparatus by a remote controller for the projector apparatus. Therefore, in the situation where the adjustment of the projection direction is limited by the connector protruding from the back as described above, the projector moves to the position of the projector device each time, for example, below the rear side of the projector device. There is a problem that a complicated work is necessary even though the electronic leg is provided to simplify the user's adjustment work, such as attaching a book or the like at hand.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a projection apparatus capable of avoiding the interference of the connector projecting to the side of the housing depending on the installation angle with the base. Another object is to provide a projection method and a program.

The invention according to claim 1 is a projection device, and is provided on a main body housing of the device, a connector formed on an outer surface of the main body housing, and a lower surface of the main body housing, and each of the projection devices is extendable. At least three or more electric legs that support the main body case, a projection unit that forms and projects a light image according to an image signal, and instructions to change the projection direction by extending and contracting the electric legs. An instruction means, a judgment means for judging whether or not the posture of the main body casing after the change instructed by the instruction means exceeds a predetermined inclination value, and a result of the judgment by the judgment means, In addition to the contents of the instruction, the electric leg portion is provided with leg control means for uniformly expanding and contracting all the electric leg portions.
According to a second aspect of the present invention, in the first aspect of the invention, the instruction unit includes an operation unit that instructs an operation to extend and contract the electric leg, and the instruction unit includes a key provided on the operation unit. By changing the projection direction.
According to a third aspect of the present invention, in the second aspect of the present invention, the key provided on the operation unit is a tilt key for instructing a change in the projection direction.

The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the predetermined inclination value which is a judgment criterion in the judging means is determined by the position of the main body housing side connector and the main body housing side connector. It is determined by the protruding amount of the cable-side connector that is connected and protrudes from the outer surface of the main body casing.

The invention according to claim 5 is the invention according to claim 4 , wherein the main body housing side connector can be connected to a connector of a plurality of types and protrusion amounts, and the judging means is connected to the main body housing side connector. The predetermined inclination value is variably set according to the position and the protruding amount of the cable side connector to be connected.

The invention according to claim 6 further comprises selection means for selectively setting the type of the cable side connector to be connected to the main body housing side connector in the invention according to claim 5 , wherein the judgment means is the selection The predetermined inclination value is variably set in accordance with the selection content of the means.

According to a seventh aspect, in the invention described in claim 5, further automatically discriminating discriminates means the type of the cable-side connector are connected by the presence or absence of an image signal input to the main body housing side connector And the determination means variably sets the predetermined inclination value in accordance with the determination content of the determination means.

The invention according to claim 8 is a projection method, comprising a main body casing, a connector formed on an outer surface of the main body casing, and a lower surface of the main body casing. A connector formed on the outer surface and disposed on the lower surface of the main body casing, each extending at least three electric legs for supporting the main body casing, and forming an optical image corresponding to the image signal. A projection method including a projection unit for projecting, wherein an instruction step for instructing a change in projection direction by extending and retracting the electric leg portion, and the main body housing after the change instructed in the instruction step A step of determining whether or not the posture of the vehicle exceeds a predetermined inclination value, and a leg that uniformly expands and contracts all of the electric legs in addition to the instruction content in the instruction step based on the determination result in the determination step And a part control step.

According to a ninth aspect of the present invention, there is provided a main body housing, a connector formed on the outer surface of the main body housing, and a lower surface of the main body housing, each of which is extendable to support the main body housing. A program executed by a computer built in a projection apparatus having a projection unit that forms and projects an optical image corresponding to an image signal by projecting more or more electric legs, and extending and contracting the electric leg in the projection direction An instruction step for instructing a change, a determination step for determining whether or not the posture of the main body housing after the change instructed in the instruction step exceeds a predetermined inclination value, and a determination result in the determination step In addition to the instruction content in the instruction step, the computer is caused to execute a leg control step for uniformly extending and contracting all of the electric legs.

  According to the present invention, it is possible to avoid the connector protruding to the side of the housing depending on the installation angle from interfering with the base.

(First embodiment)
A first embodiment when the present invention is applied to a data projector of a field sequential system will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a functional configuration of an electronic circuit included in the data projector device 10 according to the embodiment.
In the figure, reference numeral 11 denotes an input / output connector portion provided on the back side of the main body casing of the data projector device 10, for example, from a pin jack (RCA) type video input terminal, a D-sub15 type RGB input terminal, and a USB terminal. Become.

  Image signals of various standards input from the input / output connector unit 11 are sent to the image conversion unit 13 via the input / output interface 12 (I / F) 12 and the system bus SB. The image conversion unit 13 is generally also referred to as a scaler, and after unifying the transmitted image signal into an image signal of a predetermined format suitable for projection including the number of resolutions, the number of gradations, etc., the projected image This is sent to the processing unit 14.

  At this time, a character image for OSD (On Screen Display) and a symbol such as a pointer are also sent to the projection image processing unit 14 while being superimposed on the image signal as necessary.

  The projection image processing unit 14 multiplies the frame rate, for example, 60 [frames / second], the number of color component divisions, and the number of display gradations from the transmitted image signal by faster time-division driving. The micromirror element 15 which is a spatial light modulation element (SOM) is driven to display.

  The micromirror element 15 is turned on and off at a high speed individually by tilting angles of a plurality of micromirrors arranged in an array, for example, XGA (horizontal 1024 × vertical 768 dots). Form an image.

  On the other hand, the LED array 16 is configured by regularly arranging an array so that a large number of LEDs emitting light of RGB colors are mixed, and light emission by time division for each color component is reflected on the entire inner surface. Is condensed by a truncated pyramid-shaped housing 17, and a luminous flux having a uniform luminance distribution is made by an integrator 18, then totally reflected by a mirror 19 and irradiated onto the micromirror element 15.

  Then, an optical image is formed by the reflected light from the micromirror element 15, and the formed optical image is projected and displayed via a projection lens unit 20 on a screen (not shown) to be projected.

  The projection lens unit 20 can arbitrarily change the in-focus position and the zoom position (projection angle of view). That is, among the plurality of optical lenses constituting the projection lens unit 20, a focus lens and a zoom lens (not shown) are moved back and forth along the optical axis direction, respectively, so that the focus position and the zoom position are individually controlled.

  In the LED array 16, LED groups of corresponding colors are collectively controlled by the R driver 21, the G driver 22, and the B driver 23, and each primary color of RGB is emitted in a time division manner.

  The R driver 21, G driver 22, and B driver 23 emit LEDs of individual color components that constitute the LED array 16 with timing and drive current based on a control signal from the projection light processing unit 24.

  The projection light processing unit 24 controls the light emission timing and drive current by the R driver 21, G driver 22, and B driver 23 according to the image data given from the projection image processing unit 14.

  The CPU 25 controls all the operations of the above circuits. The CPU 25 performs control operations in the data projector device 10 using a main memory 26 composed of DRAM and a program memory 27 which is an electrically rewritable nonvolatile memory storing an operation program and various fixed data. Run.

  The CPU 25 executes various projection operations in accordance with key operation signals from the operation unit 28. The operation unit 28 includes a key operation unit provided in the main body of the data projector device 10 and a laser light receiving unit that receives infrared light from a remote controller (not shown) dedicated to the data projector device 10. A key operation signal based on the key operated via the controller is directly output to the CPU 25.

  Here, each of the key operation unit and the remote controller constituting the operation unit 28 includes, for example, a power key for instructing power on / off, a menu key for instructing projection of various setting menu items, pointers in the projected image, various types A cursor (up / down / left / right) key for instructing the moving direction in the item selection state, an enter key for instructing setting of the selected item, a cancel key for instructing release of the selection state, and a change of the projection direction in the projection lens unit 20 It is assumed that a “tilt + (plus)” key for instructing, a “tilt− (minus)” key, and the like are provided.

  The CPU 25 is further connected to the angular acceleration sensor 29, the sound processing unit 30, and the attitude processing unit 31 via the system bus SB.

  The angular acceleration sensor 29 is composed of, for example, a triaxial angular acceleration sensor, and detects each change amount of the yaw, pitch, and roll when the attitude angle on which the data projector device 10 is mounted is changed. Is output to the CPU 25.

  The sound processing unit 30 includes a sound source circuit such as a PCM sound source, converts the sound data given at the time of the projection operation into an analog signal, drives the speaker unit 32 to emit a loud sound, and generates a beep sound or the like if necessary.

  The posture processing unit 31 adjusts via the gear units 34a to 34d directly connected to the motors 33a to 33d by performing rotation control of the four motors (M) 33a to 33d under the control of the CPU 25, for example. The lengths of the leg portions 35a to 35d can be individually adjusted. Here, the adjustment legs 35 a to 35 d are arranged at each rectangular corner on the bottom surface of the housing of the data projector device 10.

  The posture processing unit 31 includes lengths of adjustment legs 35a and 35b near the front of the apparatus on which the projection lens unit 20 is formed, and lengths of adjustment legs 35c and 35d near the back of the apparatus on which the input / output connector part is formed. By controlling the rotations of the motors 33a, 33b and 33c, 33d so as to adjust them in parallel, the elevation angle of the housing of the data projector device 10 is controlled, and the left and right sides of the image projected from the projection lens unit 20 are controlled. The projection optical axis of the projection lens unit 20 can be moved up and down without changing the inclination of.

Next, the operation of the above embodiment will be described.
FIG. 2 shows the processing contents mainly relating to the projection operation and the change of the projection direction after the power is turned on. For the control, the CPU 25 reads out the operation program stored in the program memory 27 and reads out the main memory 26. Execute by expanding to.

  Initially, a corresponding optical image is formed by the micromirror element 15 based on the image signal input to the input / output connector unit 11, and projected from the projection lens unit 20 onto a screen (not shown) to be projected (step). S101).

On the other hand, it is determined whether or not the “tilt + (plus)” key or “tilt − (minus)” key of the operation unit 28 has been operated (step S102). Return to processing.
By repeatedly executing the processes of steps S101 and S102 in this way, the projector is on standby while the "tilt + (plus)" key or "tilt-(minus)" key of the operation unit 28 is operated while performing the projection operation. To do.

  When the “tilt + (plus)” key or “tilt− (minus)” key of the operation unit 28 is operated, if it is determined in step S102, the next operation is the “tilt + (plus)” key. Is determined (step S103).

  If it is determined that the “tilt + (plus)” key has not been operated, it is determined that the “tilt− (minus)” key has been operated. Whether the length of the front adjustment legs 35a, 35b cannot be further reduced depending on whether the length of the legs 35a, 35b is a limit value that cannot be further compressed. It is determined whether or not (step S104).

  At this time, if it is determined that it is impossible to reduce the length of the adjustment legs 35a and 35b on the front side any more, the operation of the “tilt- (minus)” key is set to NOP (invalid) and the above steps are performed as they are. The process returns to S101.

  If it is determined in step S104 that the lengths of the front adjustment legs 35a and 35b can still be shortened, the front adjustment legs 35a and 35b are operated according to the operation of the “tilt- (minus)” key. After the rotation of the motors 33a and 33b is controlled by the attitude processing unit 31 so that the length of 35b is reduced by a certain length D (step S105), the process returns to the process from step S101 again.

  Further, if it is determined in step S103 that the “tilt + (plus)” key has been operated, then the length of the front adjustment legs 35a, 35b at that time cannot be further extended. It is determined whether or not it is impossible to extend the length of the further front adjustment legs 35a and 35b depending on whether or not it is a value (step S106).

  At this time, if it is determined that it is impossible to extend the length of the adjustment legs 35a and 35b on the front side any more, the operation of the “tilt + (plus)” key is set to NOP (invalid) and the above steps are performed as they are. The process returns to S101.

  If it is determined in step S106 that the lengths of the front adjustment legs 35a and 35b can still be extended, then this data is obtained by extending the lengths of the front adjustment legs 35a and 35b. It is determined with reference to the current posture angle detected by the angular acceleration sensor 29 whether or not the predetermined elevation angle Ae preset in the projector device 10 is exceeded (step S107).

FIG. 3 illustrates the posture of the data projector apparatus 10 in a state where the front adjustment legs 35a and 35b of the main body casing 10a are extended longer than the rear adjustment legs 35c and 35d.
In the figure, in the main body housing 10a placed on a table PF such as a desk, a point that intersects the table PF on the extension line of the central axis of the connector C (not shown) connected to the input / output connector unit 11 is shown in 3B. And the angle between the extension line and the base PF is θ.

Furthermore, the distance from the point 3B to the installation center point of the rear adjustment legs 35c, 35d is 3C, and the installation center point of the front adjustment legs 35a, 35b from the installation center point of the rear adjustment legs 35c, 35d. 3A, the height of the intersection position corresponding to the central axis of the rear adjustment legs 35c and 35d on the extension line of the central axis of the connector C is B, and the center of the front adjustment legs 35a and 35b If the height of the intersection position corresponding to the axis is F,
3C / B = tan θ, (3A + 3C) / F = tan θ,
F / B = (tanθ × 3A) / (tanθ / (3A + 3C))
= (3C + 3A) / 3C
And therefore
Front leg: Rear leg = 1: 3C / (3C + 3A)
Thus, the cable-side connector C that is actually attached to the input / output connector section 11 by such a driving amount of the front / rear adjustment leg section and a distance 3C that the connector C in FIG. In consideration of this length, a predetermined elevation angle Ae in the main body housing 10a of the data projector device 10 can be set in advance.

  Thus, even if the lengths of the front adjustment legs 35a and 35b are extended in step S107, the predetermined elevation angle Ae preset for the main body housing 10a of the data projector device 10 may not be exceeded. If it is determined that the position of the front adjustment legs 35a and 35b is extended by a predetermined length D according to the operation of the "tilt + (plus)" key, the posture processing unit 31 rotates the motors 33a and 33b. After performing dynamic control (step S109), the process returns to step S101 again.

  FIG. 4A shows a simplified posture of the data projector device 10 at this time. Only the front adjustment legs 35a and 35b are extended so that the elevation angle of the main body housing 10a of the data projector device 10 is adjusted. Yes.

  Further, when it is determined in step S107 that the length of the front adjustment legs 35a and 35b is extended, the predetermined elevation angle Ae preset in the main body housing 10a of the data projector device 10 is exceeded. In response to the operation of the “tilt + (plus)” key, the posture adjustment unit 31 causes the motor 33a to extend further so that the lengths of the front adjustment legs 35a, 35b extend by a predetermined lift amount L in addition to the fixed length D. 33b, and the posture processing unit 31 controls the rotation of the motors 33c and 33d so that the lengths of the rear adjustment legs 35c and 35d extend by the predetermined lift amount L ( Step S108), the process returns to step S101 again.

  FIG. 4B shows the posture of the main body housing 10a of the data projector device 10 at this time in a simplified manner. The front adjustment legs 35a and 35b extend by a predetermined amount D so that the elevation angle of the data projector device 10 is increased. In addition to being adjusted, the front adjustment legs 35a and 35b and the rear adjustment legs 35c and 35d are adjusted together so as to extend by a predetermined lift amount L, so that they protrude from the rear surface of the main body casing 10a. It can be seen that the connector C which is supposed to interfere with the base PF has a sufficient clearance between the base PF.

  As described above in detail, according to the present embodiment, it is possible to reliably avoid interference with the base PF on which the connector C protruding from, for example, the back side of the main body housing 10a is installed according to the installation angle.

  In the above-described embodiment, the predetermined inclination value (elevation angle Ae) serving as a determination reference is connected to the position of the main body housing 10 a side connector portion 11 of the data projector device 10 and the input / output connector portion 11 to be connected to the main body housing. Since it is determined by the protruding amount of the cable side connector C protruding from the outer surface of 10a, the front adjusting leg portions 35a and 35b and the rear adjusting leg portions 35c and 35d are similarly extended with the predetermined lift amount L. The timing can be accurately determined, and the adjustable lengths of the limited adjustment legs 35a to 35d can be effectively utilized to apply the adjustable range to the maximum.

(Second Embodiment)
A second embodiment in which the present invention is applied to a data projector of a field sequential system will be described below with reference to the drawings.
Note that the functional configuration of the electronic circuit included in the data projector apparatus according to the embodiment is basically the same as that shown in FIG. 1, and therefore, the same parts are denoted by the same reference numerals. And the description will be omitted.

  In this embodiment, regarding the connector of the cable connected to the input / output connector unit 11, the user can arbitrarily make the predetermined CPU 25 recognize it by a key operation from the menu operation.

Next, the operation of the above embodiment will be described.
FIG. 5 mainly shows the processing contents relating to the change of the projection operation and the projection direction after the power is turned on. For the control, the CPU 25 reads the operation program stored in the program memory 27 and reads the main memory 26. Execute by expanding to.

  Initially, a corresponding optical image is formed by the micromirror element 15 based on the image signal input to the input / output connector unit 11, and projected from the projection lens unit 20 onto a screen (not shown) to be projected (step). S201).

On the other hand, it is determined whether or not the menu key of the operation unit 28 has been operated (step S202). If not, the “tilt + (plus)” key or “tilt− (minus)” key is operated. It is determined whether or not (step S102). If none of these has been operated, the process returns to step S201 again.
By repeatedly executing the processes in steps S201 to S203 in this way, the menu key, the “tilt + (plus)” key, or the “tilt− (minus)” key of the operation unit 28 is operated while performing the projection operation. Wait for.

  If the menu key of the operation unit 28 is operated, it is determined in step S202, and then it is determined whether or not “input switching” is selected from the submenu items (step S204).

  Here, when a submenu other than “input switching” is selected, it is assumed that it is not directly related to the present embodiment, and appropriate processing is performed according to the selected content. Description is omitted.

  On the other hand, if it is determined in step S204 that “input switching” has been selected, the input switching is performed instead of the projection according to the image signal input until then, or at least a part of the screen. The menu is projected (step S205), and a switching operation for the projection is accepted.

  Here, when the cursor key is operated on the operation unit 28, the input signal is switched according to the key operation to be in a selected state (step S206).

  FIG. 6 exemplifies the contents selected at this time and the selection state in the input switching menu. Here, “None” in which no connector or the like is connected, and “RGB” in which a D-sub15 type RGB input terminal is connected are illustrated. ”,“ Video ”for connecting a pin jack (RCA) type video input terminal, and“ USB ”for connecting a USB terminal.

  By selecting the input switching in this way, it is naturally assumed that the shape and size of the connector actually connected to the input / output connector unit 11 can be easily inferred, and the elevation angle AeX corresponding to the type of the selected connector is set ( Step S207).

  Here, the size of the connector to be connected in accordance with the contents of the input switching is as shown in FIG. 6, and the larger the connector size, the larger the elevation angle of the main body housing 10a, and the tip of the base PF and the connector C. Is low, the elevation angle AeX is set close to a low value.

  When the elevation angle AeX corresponding to the type of connector is thus set, the process returns to step S201 again.

  If it is determined in step S203 that the “tilt + (plus)” key or “tilt− (minus)” key of the operation unit 28 is operated, the next operation is “tilt + (plus)”. It is determined whether or not the key is “!” (Step S208).

  If it is determined that the “tilt + (plus)” key has not been operated, it is determined that the “tilt− (minus)” key has been operated. Whether the length of the front adjustment legs 35a, 35b cannot be further reduced depending on whether the length of the legs 35a, 35b is a limit value that cannot be further compressed. It is determined whether or not (step S209).

  At this time, if it is determined that it is impossible to reduce the length of the adjustment legs 35a and 35b on the front side any more, the operation of the “tilt- (minus)” key is set to NOP (invalid) and the above steps are performed as they are. The processing returns to S201.

  If it is determined in step S209 that the lengths of the front adjustment legs 35a and 35b can still be reduced, the front adjustment legs 35a and 35b are operated according to the operation of the “tilt- (minus)” key. After the rotation of the motors 33a and 33b is controlled by the attitude processing unit 31 so that the length of 35b is reduced by a certain length D (step S210), the process returns to the above-described step S201 again.

  Further, if it is determined in step S208 that the “tilt + (plus)” key has been operated, then the length of the front adjustment legs 35a, 35b at that time cannot be further extended. It is determined whether or not it is impossible to extend the length of the further front adjustment legs 35a and 35b depending on whether or not it is a value (step S211).

  At this time, if it is determined that it is impossible to extend the length of the adjustment legs 35a and 35b on the front side any more, the operation of the “tilt + (plus)” key is set to NOP (invalid) and the above steps are performed as they are. The processing returns to S201.

  If it is determined in step S211 that the lengths of the front adjustment legs 35a and 35b can still be extended, then this data is obtained by extending the lengths of the front adjustment legs 35a and 35b. It is determined with reference to the current posture angle detected from the angular acceleration sensor 29 whether or not the predetermined elevation angle AeX corresponding to the type of the connector C set in advance in the projector device 10 is exceeded (step). S212).

  The posture of the data projector device 10 with the front adjustment legs 35a and 35b extended longer than the rear adjustment legs 35c and 35d is as described in FIG. The predetermined elevation angle AeX is set in advance according to the size of the data projector device 10 of the data projector device 10, the position of the input / output connector unit 11, and the type of the cable-side connector C connected to the input / output connector unit 11. be able to.

  Thus, even if the length of the front adjustment legs 35a and 35b is increased in step S212, the predetermined elevation angle AeX preset for the main body housing 10a of the data projector device 10 may not be exceeded. If it is determined that the position of the front adjustment legs 35a and 35b is extended by a predetermined length D according to the operation of the "tilt + (plus)" key, the posture processing unit 31 rotates the motors 33a and 33b. After performing dynamic control (step S214), the process returns to step S201 again.

  When the length of the front adjustment legs 35a and 35b is extended in step S212, a predetermined elevation angle AeX corresponding to the type of the connector C preset in the main body housing 10a of the data projector device 10 is exceeded. If it is determined, the length of the front adjustment legs 35a and 35b is further extended by a predetermined lift amount L in addition to the fixed length D in accordance with the operation of the “tilt + (plus)” key. The posture processing unit 31 controls the rotation of the motors 33a and 33b, and the posture processing unit 31 rotates the motors 33c and 33d so that the lengths of the rear adjustment legs 35c and 35d are extended by the predetermined lift amount L. After performing dynamic control (step S213), the process returns to step S201 again.

  As the size of the connector C connected as shown in FIG. 6 increases, the front adjustment legs 35a and 35b extend by a predetermined amount D to adjust the elevation angle of the data projector apparatus 10, and the front side is adjusted at an earlier timing. The adjustment legs 35a and 35b and the rear adjustment legs 35c and 35d are both adjusted so as to extend by a predetermined lift amount L, and as a result, the distance 3C on the connector C side is adjusted to be longer. .

  As described in detail above, according to the present embodiment, the value of the predetermined elevation angle AeX serving as a threshold value can be varied in accordance with the connector actually connected among the plurality of connectors connectable to the input / output connector unit 11. In order to set the timing, the front adjustment legs 35a and 35b and the rear adjustment legs 35c and 35d are similarly extended with the predetermined lift amount L in accordance with the shape and size of the connector C that is actually connected. Can be accurately determined, and the length of the limited adjustment leg portions 35a to 35d can be effectively utilized, and the adjustable range can be applied to the maximum.

  In that case, since the value of the predetermined elevation angle AeX is variably set according to the selection content by selecting the type of the connector C connected to the input / output connector section 11, the connector can be surely connected with simple operation. The value of the predetermined elevation angle AeX corresponding to the type of C can be set.

  Although not described in the above embodiment, the user does not select the cable-side connector C to be connected to the input / output connector unit 11 as described in the second embodiment. When the CPU 25 determines the image signal input from the connector unit 11, the connector C connected by the input / output connector unit 11 is automatically determined from the input image signal, and the above-mentioned is based on the determination result. The value of the predetermined elevation angle AeX may be variably set and a hand may be used.

  As described above, the CPU 25 automatically determines the predetermined elevation angle AeX corresponding to the type of the connector C without any trouble for the user.

  The first and second embodiments have been described with respect to the case where the present invention is applied to a field sequential type data projector apparatus. However, the present invention provides an element for forming a light image, an input image signal, and the like. The connector type of the input cable, the connector shape of the input cable, and the like are not limited, and can be similarly applied to other projection apparatuses.

  Further, the cable-side connector C protruding from the outer surface of the main body housing 10a is not limited to the connector connected to the input / output connector unit 11, but may be various cable-side connectors such as a power cable. Further, what is connected may be an external memory such as a USB memory instead of the connector C.

  In addition, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention in the implementation stage. In addition, the functions executed in the above-described embodiments may be implemented in appropriate combination as much as possible. The above-described embodiment includes various stages, and various inventions can be extracted by an appropriate combination according to a plurality of disclosed structural requirements. For example, even if several constituent requirements are deleted from all the constituent requirements shown in the embodiment, if an effect is obtained, a configuration from which the constituent requirements are deleted can be extracted as an invention.

1 is a block diagram showing a functional configuration of an electronic circuit of a projector device according to a first embodiment of the present invention. 6 is a flowchart showing processing contents mainly relating to tilt control in the projection direction according to the embodiment. The figure which illustrates the attitude | position in the state which extended the adjustment leg part of the front side of the main body housing | casing which concerns on the embodiment longer than the adjustment leg part of the rear side. The figure which simplifies and shows the attitude | position of the main body housing | casing which concerns on the same embodiment. 12 is a flowchart showing processing contents mainly related to tilt control in the projection direction according to the second embodiment of the present invention. The figure which shows the example of selection in the connector selection menu which concerns on the same embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Data projector apparatus, 10a ... Main body housing, 11 ... Input / output connector part, 12 ... Input / output interface (I / F), 13 ... Image conversion part, 14 ... Projection image processing part, 15 ... Micromirror element, 16 ... LED array, 17 ... housing, 18 ... integrator, 19 ... mirror, 20 ... projection lens unit, 21 ... R driver, 22 ... G driver, 23 ... B driver, 24 ... projection light processing unit, 25 ... CPU, 26 ... Main memory 26, 27 ... Program memory, 28 ... Operation unit, 29 ... Angular acceleration sensor, 30 ... Audio processing unit, 31 ... Attitude processing unit, 32 ... Speaker unit, 33a-33d ... Motor (M), 34a-34d ... Gear part (G), 35a-35d ... adjustment leg part, C ... (cable side) connector, PF ... stand, SB ... system bus.

Claims (9)

The body of the device,
A connector formed on the outer surface of the main body housing;
At least three or more electric legs disposed on the lower surface of the main body housing and supporting the main body housing in a freely stretchable manner;
Projection means for forming and projecting a light image according to the image signal;
Instructing means for instructing a change in projection direction by expanding and contracting the electric leg,
Determination means for determining whether the posture of the main body housing after the change instructed by the instruction means exceeds a predetermined inclination value;
A projection apparatus comprising: leg control means for uniformly expanding and contracting all of the electric legs in addition to the instruction contents of the instruction means based on the determination result of the determination means. The instruction means includes an operation unit that instructs an operation to extend and contract the electric leg,
The projection apparatus according to claim 1, wherein the instruction unit instructs to change a projection direction by operating a key provided in the operation unit. The projection apparatus according to claim 2, wherein the key provided on the operation unit is a tilt key that instructs to change a projection direction. The predetermined inclination value, which is a judgment criterion in the judging means, is determined by the position of the main body housing side connector and the protruding amount of the cable side connector that is connected to the main body housing side connector and protrudes from the outer surface of the main body housing. The projection apparatus according to any one of claims 1 to 3 . The main body housing side connector can connect a plurality of types of shapes and protruding connectors.
5. The projection apparatus according to claim 4 , wherein the determination unit variably sets the predetermined inclination value according to a position and a protruding amount of a cable side connector connected to the main body housing side connector. Further comprising selection means for selectively setting the type of the cable side connector to be connected to the main body housing side connector,
6. The projection apparatus according to claim 5 , wherein the determination unit variably sets the predetermined inclination value in accordance with a selection content by the selection unit. Further comprising a determining means for automatically determining the type of the cable-side connector connected based on the presence or absence of an image signal input to the main body housing-side connector,
6. The projection apparatus according to claim 5 , wherein the determination unit variably sets the predetermined inclination value in accordance with the determination content of the determination unit. A main body housing, a connector formed on the outer surface of the main body housing, and at least three or more electric legs disposed on the lower surface of the main body housing, each extending freely and supporting the main body housing; A projection method using a projection apparatus including a projection unit that forms and projects a light image according to a signal,
An instruction process for instructing a change in the projection direction by expanding and contracting the electric leg,
A determination step of determining whether or not the posture of the main body casing after the change instructed in the instruction step exceeds a predetermined inclination value;
A projection method comprising: a leg control step for uniformly extending and contracting all of the electric legs in addition to the instruction contents in the instruction step based on the determination result in the determination step. A main body housing, a connector formed on the outer surface of the main body housing, and at least three or more electric legs disposed on the lower surface of the main body housing, each extending freely and supporting the main body housing; A program executed by a computer built in a projection apparatus including a projection unit that forms and projects a light image according to a signal,
An instruction step for instructing a change in the projection direction by expanding and contracting the electric leg,
A determination step of determining whether or not the posture of the main body housing after the change instructed in the instruction step exceeds a predetermined inclination value;
A program for causing a computer to execute a leg control step for uniformly extending and contracting all of the electric legs in addition to the instruction contents in the instruction step according to the determination result in the determination step.

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