NECKBAND TYPE COMPUTER

Abstract

To provide a wearable computer excellent in extendibility and capable of being stably worn. A main body 2 which is equipped with cases 4, 6 and a flexible arm 8 is ring shaped main body having a part opened. The case 4 includes therein a computer, etc. The case 6 includes therein a battery for supplying electric power to the computer, etc. The flexible arm 8 is flexible and thus can be easily deformed. A connector case 10 is provided at a center portion of the flexible arm 8. The connector case 10 is provided with connectors for external device connection 36, 36, and so on. In the present embodiment, a USB connector is employed as the connectors for external device connection 36, 36, and so on.

Description

TECHNICAL FIELD

[0001] The present invention relates to a neck band type computer.

BACKGROUND ART

[0002] According to practical use of a spectacle type wearable computer, a person can use a computer while wearing the computer on the body. The spectacle type wearable computer, however, was used by attaching it to a spectacle, which raised a problem of weight. Further, the person received a tensile force from a code for connecting an external device such as a camera, a display, etc., which also raised a problem of an unstable wearing condition.

[0003] JP2002-229670A discloses a body wearing type computer system in which a computer is housed in a collar of clothes. According to a device disclosed in JP2002-229670A, a computer, an earphone, a monitor, and a microphone are housed in the collar, and thus the above described problems have been solved.

SUMMARY OF INVENTION

[0004] However, in the conventional technology as disclosed in Patent Literature 1, special clothes are required, which makes it inconvenient to use the wearable computer. Further, in the spectacle type wearable computer, increase of connection to external devices invited serious problem of tensile forces received from codes of the external devices. This rendered a limit in extendibility. Also, in the device of Patent Literature 1, since an external device was preliminary built in the device, which also rendered a limit in extendibility.

[0005] A purpose of the present invention is to provide a wearable computer excellent in extendibility and capable of solving at least one of the above described problems and eliminating an unstable wearing condition.

[0006] Independently applicable characteristics of the present invention will be exemplified below.

[0007] (1) The neck band type wearable computer of the present invention includes a ring shaped main body having a part opened for wearing it around the neck, a computer built in the main body, a battery housed in the main body to supply electric power to the computer, and connectors for external device connection provided in the main body and connected to the computer.

[0008] With the above described structure, a wearable computer excellent in a stable wearing condition and extendibility can be obtained.

[0009] (2) The neck band type wearable computer of the present invention is characterized in that connectors are provided at a center portion of the ring shaped main body.

[0010] This contributes to reduce possibility of unstable rotation of the main body of the wearable computer when it receives a tensile force from a code connected to the connector. Namely, the wearable computer can keep a stable condition.

[0011] (3) The neck band type wearable computer of the present invention is characterized in further including a short-range communication circuit that is housed in the main body and connected to the computer.

[0012] This allows connection with the external device, etc. without using a physical code.

[0013] (4) The neck band type wearable computer of the present invention is characterized in that at least a part of the center portion of the main body is equipped with a flexible arm.

[0014] This allows a flexible change of a shape of the main body and suitable wearing around the neck.

[0015] (5) The neck band type wearable computer of the present invention is characterized in that the flexible arm is composed of a coil made of cylindrically coiled wires and a cover tube contacting a periphery of the coil, the cover tube being stretched so as to generate a contraction force in a direction in which the neighboring wires are brought into pressure contact with each other or being stretched so as to generate a contraction force in a radial direction by forming an inner diameter of the tube in a natural condition smaller than an outer diameter of the coil.

[0016] With the structure, a shape of the main body can be changed flexibly and the shape can be maintained, resulting in allowing suitable wearing around the neck.

[0017] (6) The neck band type wearable computer of the present invention is characterized in that the coil is made in a manner that a wire having a round cross section and a wire having an angular cross section are coiled such that the neighboring wires contact each other and are coiled in multiple streaks to be formed into a cylindrical coil.

[0018] With the structure, a shape of the main body can be changed flexibly and the shape can be maintained, resulting in allowing suitable wearing around the neck.

[0019] (7) The neck band type wearable computer of the present invention is characterized in that the cover tube is composed of a silicone tube.

[0020] With the structure, a shape of the main body can be changed flexibly and the shape can be maintained, resulting in allowing suitable wearing around the neck.

[0021] (8) The neck band type wearable computer of the present invention is characterized in that the main body has a plane shape which allows a planar contact with the back of the neck at its center portion contacting the back of the neck and has two cases which allow a planar contact with the chest at its both ends for a stable condition.

[0022] With the structure, a stable wearing can be achieved.

[0023] (9) The neck band type wearable computer of the present invention is characterized in that one of the cases houses a computer, and the other one of the cases houses a battery.

[0024] With the structure, the right and left weight balance can be maintained easily, resulting in achieving a stable wearing.

[0025] (10) The neck band type wearable computer of the present invention is characterized in that a fitting mechanism is provided in each of both ends of the ring shaped main body and an attachment connected between the both fitting mechanisms is further included.

[0026] With the attachment, a center of gravity comes to be positioned lower, which realizes a stable wearing condition.

[0027] (14) The neck band type wearable computer of the present invention is characterized in that a camera, a projector or a sensor is provided in the attachment.

[0028] With the structure, a camera, a projector or a sensor can be stably attached.

[0029] (15) The neck band type wearable computer of the present invention is a neck band type wearable computer which includes a ring shaped main body having a part opened for wearing it around the neck, a computer built in the main body, a battery housed in the main body for supplying electric power to the computer, and connectors for external device connection or a short-range communication device provided in the main body and connected to the computer, wherein, via communication by the connectors for external device connection or the short-range communication device, a projector and a detector are connected to the computer, the projector projecting an image of a keyboard onto an object, the detector acquiring input information by detecting movement of a finger on the keyboard projected on the object, the computer displaying a processing result on the monitor on the basis of the input information.

[0030] With the structure, if the neck band type wearable computer is placed near the monitor, it can be used like a desktop type computer.

[0031] (16) The wearable computer of the present invention includes a flexible arm to be wound around a part of a human body for wearing, storage cases attached to both ends of the flexible arm, a computer built in the storage case, and a battery housed in the storage case to supply electric power to the computer.

[0032] With the structure, the wearable computer can be used by being easily worn on a human body.

[0033] (17) The wearable computer of the present invention is characterized in further including a center case attached to a center of the flexible arm and connectors for external device connection provided in the center case and connected to the computer.

[0034] This contributes to reduce possibility of unstable rotation of the main body of the wearable computer when it receives a tensile force from a code connected to the connector. Namely, the wearable computer can keep a stable condition.

[0035] (18) The wearable computer of the present invention is characterized in that each of two storage cases is provided with an engaging mechanism for mutual engagement.

[0036] This enables a stable fixing therebetween.

[0037] (19) The wearable computer of the present invention is characterized in that the part of the human body is the wrist or the ankle.

[0038] With the structure, the wearable computer can be used by being wound around the wrist or the ankle.

BRIEF DESCRIPTION OF DRAWINGS

[0039] FIG. 1 illustrates an outer appearance of a neck band type wearable computer 2 according to an embodiment of the present invention.

[0040] FIG. 2 illustrates a hardware structure of the neck band type wearable computer 2.

[0041] FIG. 3 illustrates a cross-sectional structure of a flexible arm 8.

[0042] FIGS. 4a and 4b illustrate a tube 90 in detail.

[0043] FIG. 5 illustrates interior structures of a case 4 and a connector case 10.

[0044] FIGS. 6a, 6b and 6c illustrate assembling of a coil 80 and a tube 90.

[0045] FIG. 7 illustrates a state of connection between the case 4 and the connector case 10 via the flexible arm 8.

[0046] FIG. 8 illustrates a structure of an attachment 50.

[0047] FIGS. 9a and 9b illustrate a hardware structure of the attachment 50.

[0048] FIG. 10 illustrates a state of wearing the neck band type computer 2.

[0049] FIG. 11 illustrates the neck band type computer 2 of the second embodiment.

[0050] FIG. 12 illustrates a partial detail of the neck band type computer 2 of the second embodiment.

[0051] FIG. 13 illustrates an attachment 50 of the neck band type computer 2 of the second embodiment.

[0052] FIG. 14 illustrates a head mount display 150 of the neck band type computer 2 of the second embodiment.

[0053] FIG. 15 illustrates an example of use of the neck band type computer 2.

[0054] FIG. 16 illustrates display of a keyboard projected by a laser projector 58.

[0055] FIG. 17 is an example of a keyboard 27 projected by the laser projector 58.

[0056] FIG. 18 is a flow chart of a display program.

[0057] FIGS. 19a and 19b illustrate correction of display data.

[0058] FIGS. 20a and 20b illustrates correction of display data.

[0059] FIG. 21 illustrates another example of a wearable computer.

[0060] FIGS. 22a and 22b illustrates further another example of the wearable computer.

[0061] FIG. 23 illustrates a recess to be fit on the back of the neck.

DESCRIPTION OF EMBODIMENTS

1. Basic Structure

[0062] An outer appearance of a neck band type wearable computer according to an embodiment of the present invention will be described below. A main body 2, including cases 4, 6 and a flexible arm 8, is, as a whole, formed into a ring shape having a part opened.

[0063] A computer, etc. is built in the case 4. A battery for supplying electric power to the computer, etc. is built in the case 6. The flexible arm 8 has flexibility and thus can be deformed. A center portion of the flexible arm 8 is provided with a connector case 10. The connector case 10 is provided with connectors for external device connection 36, 36, . . . . In the present embodiment, a USB connector is used as the connectors for external device connection 36, 36, . . . .

[0064] Fitting connectors 38, 38 are provided at around ends of the case 4. In the present embodiment, a USB connector is used also as the fitting connectors 38, 38. The fitting connectors 38, 38 serve to physically electrically connect an attachment 50 in a manner as described below.

[0065] FIG. 2 illustrates a hardware structure of a computer built in the main body 2. A CPU 30 is connected to a memory 32, a flash memory 34, the USB connector 36, the fitting connector 38, a short-range communication circuit 40, and a communication circuit 42. A battery 44 supplies electric power to them.

[0066] In the present embodiment, the case 4 is provided therein with the CPU 30, the memory 32, the flash memory 34, the fitting connector 38, the short-range communication circuit 40, and the communication circuit 42, and the case 6 is provided therein with the battery 44. The connectors for external device connection 36 are built in the connector case 10.

[0067] The battery 44 is built in the case 6. A back side surface of the case 6 is provided with a cover (not shown). By removing the cover, the battery 44 can be taken out or put into the case 6.

[0068] Referring back to FIG. 1, the flexible arm 2 has flexibility, and thus a shape thereof can be adjusted by bending it. As illustrated in FIG. 3, the flexible arm 2 is composed of a coil 80 and a tube 90 covering an outer periphery of the coil 80. In an inner space of the coil 80, a power supply line (not shown) for making a connection between the battery 44 and the connectors for external device connection 36, and the CPU 30 and a bus line (not shown) for making a connection between the connectors for external device connection 36 and the CPU 30 are housed.

[0069] The coil 80 is formed into a double winding coil composed of a wire having a round cross section (SUS304WPB) 82 and a SUS wire having a triangular cross section (SUS304) 84. In the present embodiment, a diameter of the wire 82 is set to 0.8 mm, and a side of the wire 84 is set to 1.0 mm.

[0070] The neighboring SUS wire (spring material) 82 and the SUS wire (spring material) 84 contact to each other. The SUS wire 84 having a triangular cross section is arranged such that a side of the triangular shape extends along the outer periphery, and a width thereof becomes narrower as it goes inside (or vice-verse).

[0071] A silicon tube 90 is provided in a manner that the tube contacts the outer periphery of the coil 80. In the present embodiment, the tube 90 having an inner diameter of 50 mm in its natural condition is used for the coil 80 having an outer diameter of 54 mm. As described above, because the outer diameter of the coil 80 is set slightly larger than the inner diameter of the tube 90 (about 5% to 15% of the tube diameter), the tube 90 tightly contacts the outer periphery of the coil 80.

[0072] Further, in the present embodiment, the tube 90 is brought into tight contact with the coil 80 while the tube 90 is stretched from its natural condition in an A direction of FIG. 3. With the structure, the tube 90 tends to contract according to its flexibility, a force can be applied to the coil 80 in a direction compressing the coil 80.

[0073] FIG. 4A illustrates the tube 90 in detail. In the present embodiment, the tube 90 is made by molding a flexible silicon. Also, a flange 92 is provided on one end. A flange 94 is provided on the other end.

[0074] FIG. 4B illustrates a cross section of the tube 90. At the end where the flange 94 is provided, a stopper 96 having a hollow section of a diameter smaller than the inner diameter of the tube 90 is provided. This can prevent the coil 80 from being dropout.

[0075] FIG. 5 illustrates interior structures (states where covers are removed) of the main body 4 and the connector case 10. The main body 4 is provided with a recess portion 100 which receives a flange 92 of the tube 90. Although it is not shown, the corresponding recess portion is provided in the cover. A stopper 110 is provided next to the recess portion 100. The stopper 110 serves to keep the coil 80 at a predetermined position within the main body 4 when the flexible arm 8 is attached to the main body 4.

[0076] A recess portion 102 for receiving the flange 94 of the tube 90 is provided in the connector case 10. Although it is not shown, the corresponding recess portion is provided in the cover.

[0077] Subsequently, a step of attaching the flexible arm 8 to the main body 4 and the movable portion 6 will be described below. Initially, as illustrated in FIG. 6A, the coil 80 is put in the tube 90. At the time, the coil 80 is inserted into the tube 90 until one end of the coil 80 contacts the stopper 96 of the tube 90.

[0078] In the present embodiment, because a length LC (e.g., 60 mm) of the coil 80 is set longer than a length LT (e.g., 50 mm) of the tube 90 (LC is longer than LT by about 10% to 50% of the entire length of the tube 90), the coil 80 projects out as shown in FIG. 6A. As shown in FIG. 6B, while leaving the coil 80 as it is, the flange 94 of the tube 90 is pushed into the recess portion 102 of the movable portion 6 to fix it and, when the other end of the coil 80 is brought into contact with the stopper 110 of the main body 4, the flange 92 of the tube 90 will not be received in the recess portion 100 of the main body 4.

[0079] To avoid this, as illustrated in FIG. 6C, the tube 90 is once pulled in an arrow B direction, and the flange 92 of the tube 90 is engaged into the recess portion 100 of the main body 4. Then, the cover is put over the recess portion.

[0080] Thus assembled state is illustrated in FIG. 7. Incidentally, the cover is omitted in FIG. 7.

[0081] In the present embodiment, the coil is formed into a double winding coil in a manner that a wire having a round cross section and a wire having a triangular cross section are neighbored each other. Therefore, when the flexible arm 8 is bent in a manner as illustrated in FIG. 1, a degree capable of keeping the bending state becomes higher. This is because, a coil composed of a wire having a round cross section and a wire having a triangular cross section which are neighbored has larger recovery resistance when the coil is bent than a coil composed of wires having a round cross section which are neighbored. This allows maintaining of the bending state. Further, since the inner diameter of the tube 90 is made smaller than the outer diameter of the coil 80, and still further, the tube 90 is brought into tight contact with the coil 80 while the tube 90 is stretched, the bending state can be maintained.

[0082] This produces an effect of easy adjustment of an angle and a position and an effect of maintaining of the adjusted position. Incidentally, at least one of setting the inner diameter of the tube 90 smaller than the outer diameter of the coil 80 (applying a force in a radial direction) or bringing the tube 90 into tight contact with the coil 80 while the tube 90 is stretched (applying a force in a direction in which the neighboring wires are compressed) may be executed.

[0083] In the above described embodiment, a double winding coil is used as the coil 80. A single winding coil may be used instead. Even in this case, the effect of maintaining a bending state according to the stretch/tight contact of the tube 90 can also be produced.

[0084] Further, instead of the double winding coil, a multi-winding coil coiled more than three times may be used. In this case, however, the coil is preferably made by a combination of a wire having a round cross section and a wire having a triangular cross section which are neighbored.

[0085] In the above described embodiment, the coil 80 is composed of a wire having a round cross section and a wire having a triangular cross section. A wire having a round cross section and a wire having a cross section of multangular shape more than square shape may be used instead. Alternatively, a wire having an angular (trapezoid, parallelogram, etc.) cross section other than the multangular cross section may be used.

[0086] In the above described embodiment, the force in a direction in which the tube 90 compresses the coil 80 is applied. Biasing means (flexible member, spring material, etc.) which is fixed to both ends of the coil 80 and biased in a shrinking direction may be provided instead.

[0087] As illustrated in FIG. 1, in the present embodiment, the attachment 50 can be attached to the ends of the cases 4, 6. A camera, a sensor, etc. can be housed in the attachment 50.

[0088] FIG. 8 illustrates a structure of the attachment 50 provided with a camera 52. The attachment 50 is provided with the camera 52 at its center and male type connectors 54 (fitting connectors) of a micro-USB (or C-type USB) at its both ends. Female type connectors 38 (fitting connectors) are provided in the cases 4, 6 at positions corresponding to the male type connectors 54. By engaging the male type connectors 54 with the female type connectors 38, the attachment 50 can be mechanically electrically connected to the cases 4, 6.

[0089] FIG. 9A illustrates a circuit structure of the attachment 50. One of the fitting connectors 54 is connected to the camera 52. The other one of the fitting connectors 54 is connected to nothing, i.e., is left free.

[0090] In a case where a plurality of devices, e.g., the camera 52 and a sensor 56, is housed in the attachment 50, one of the fitting connectors 54 is connected to the camera 52 and the other one of the fitting connectors 54 is connected to the sensor 56 as shown in FIG. 9B.

[0091] In a case of FIG. 9A, by attaching the attachment 50, the camera 52 can be connected to the CPU 30. In a case of FIG. 9B, by attaching the attachment 50, the sensor 56 can be connected to the CPU 30. Further, by attaching the attachment 50, an orientation of the attachment 50 becomes stable owing to its own weight. Further, since the neck band type wearable computer is worn around the neck, the attachment 50 would not move even when the head moves, thereby keeping a relatively stable orientation. In this meaning, it is preferable that the attachment 50 houses devices requiring a stable orientation, e.g., the camera 52, a projector, and the sensor 56.

[0092] FIG. 10 illustrates a state that the neck band type wearable computer 2 is worn. In FIG. 10, a case where the attachment 50 is not attached is illustrated; however, the attachment 50 may be attached as required. The connector case 10 resides at the back of the neck so that it is hidden in FIG. 10.

[0093] The connectors for external device connection 36, 36, . . . of the connector case 10 is connected to an external device such as a head phone, a head mount display (HMD), or a laser projector.

2. Second Embodiment

[0094] FIG. 11 illustrates an outer appearance of a neck band type wearable computer according to a second embodiment. A main body 2, including cases 4, 6 and a flexible arm 8, is, as a whole, formed into a ring shape having a part opened.

[0095] A computer, etc. is built in the case 4. A battery for supplying electric power to the computer, etc. is built in the case 6. The flexible arm 8 is formed of a plastic member, has flexibility, and thus can be deformed.

[0096] As illustrated in FIG. 12, a fitting connector 38 (for example, a C-type USB) is provided near a base part of the case 6 and a permanent magnet 39 is embedded near a base part of the case 4 opposing the same.

[0097] As illustrated in FIG. 13, an attachment 50 is configured such that a rotary body 53 is held inside a holding body 51 so as to be able to rotate in a direction of an arrow .alpha.. A projector 55, a motion sensor 57, and an infrared light emitter 61 are provided in the rotary body 53. A fitting connector 54 is provided on an end face of the holding body 51 on one side and a permanent magnet (not illustrated in the drawing) is embedded in an end face of the holding body 51 on the other side.

[0098] According to this configuration, as illustrated in FIG. 11, the attachment 50 can be attached to the cases 4, 6. However, since coupling on one side is established by means of a magnet, when an excessive force is applied, the attachment will come off from the case 4. Accordingly, an accident, such as the flexible arm 8 constricting a neck of a wearer, can be prevented. Moreover, by rotating the rotary body 53, a device provided on the rotary 53 can be oriented in a desired direction.

[0099] In the present embodiment, as a result of the motion sensor 57 imaging, patterned infrared light emitted by the infrared light emitter 61, a distance to an object, motion of the object, and the like, can be determined by a CPU. For example, with movement of a hand of the wearer, operation of the neck band type wearable computer can be controlled.

[0100] Referring back to FIG. 11, a recess is provided on an outer side face of the case 4, and in this recess, a head mount display 150 is accommodated together with a cord 152. When the head mount display 150 is to be used, the display is taken out and secured onto a temple of glasses of the wearer.

[0101] FIG. 14 illustrates a state in which the head mount display 150 has been taken out. A projection unit (display) is provided inside the head mount display 150, and a prism 154 serving to guide an image thereof to an eye is provided on a front end of the head mount display 150. A fixing member 156 is provided at a back end of the head mount display 150. The fixing member 156 accommodates a magnet 156 for attachment to the temple (metal) and has a hook 158 for hooking onto the temple. The fixing member 156 allows for attachment to the temple of the glasses of the wearer.

[0102] The fixing member 156 and the head mount display 150 are connected to each other by a flexible arm 160 having the structure illustrated in FIG. 3. By virtue of this configuration, an angle of the head mount display 150 is adjustable.

[0103] The case 6 is provided with two microphones 7a, 7b that are spaced apart from each other. Sound picked up by these microphones is converted into digital data. The CPU estimates a direction and a position of a sound source on the basis of a phase difference and an amplitude difference pertaining to the same sound as picked up at the two microphones 7a, 7b. Accordingly, a voice of the wearer can be discriminated (while sound from another person can be excluded), so that a voice instruction by the wearer can be recognized accurately.

3. Example of Use

[0104] FIG. 15 illustrates an example of use of the neck band type wearable computer 2. The user 3 wearing the neck band type wearable computer 2 is sitting in front of a display 5 set on a desk 7. The display 5 is equipped with a short-range communication circuit (e.g., Bluetooth communication circuit). A short-range communication circuit 40 of the neck band type wearable computer 2 communicates with the display 5 and outputs a display signal.

[0105] In the example of FIG. 15, the attachment 50 equipped with a laser projector and a camera is worn (not shown). As illustrated in FIG. 16, the laser projector 58 displays a keyboard on the desk 7. A keyboard 27 displayed on the desk 7 by means of the laser projector 58 is illustrated in FIG. 17. In the present embodiment, a projectable area projectable by the laser projector 58 is an area 29 indicated by a dotted line. The keyboard 27 is projected within a sufficiently large projectable area.

[0106] Movement of a finger of the user on thus displayed keyboard 27 is detected by the camera 60 to determine which key is depressed. Incidentally, an area 25 is an area for moving a mouse cursor when movement of a finger is detected.

[0107] Incidentally, since the laser projector 58 is worn by the user 3, the projected image moves following movement of the user. This makes the user hard to use it. The CPU 30 controls to fix the display of the keyboard 27 at a predetermined position in the following manner.

[0108] A flow chart of a keyboard input program is illustrated in FIG. 18. Initially, in step S1, the CPU 30 transfers keyboard image data that is preliminary prepared to the laser projector 58 to cause the projector to project a keyboard on the desk 7 (Step S1). Then, the CPU 30 obtains an image of the keyboard projected by the camera 60 (Step S2). Subsequently, the CPU 30 specifies a featured image from thus captured keyboard image (images of projected keyboard and portions of desk around the keyboard) (Step S3). A featured image that is not contained in the keyboard image data (e.g., design, scratches, etc. on a surface of the desk 7) is recorded together with a position (relative positional relationship with the keyboard) thereof as a featured image.

[0109] Then, the CPU 30 determines whether or not the keyboard is correctly projected (Step S4). In the present embodiment, the keyboard is displayed by a predetermined size (e.g., the size is determined by a ratio of the keyboard occupying in the captured image) as a rectangular shape having a predetermined aspect ratio. Further, the CPU 30 recognizes that a display in a case where the keyboard has a predetermined positional relationship with respect to the featured image is correct. For example, in a case where the keyboard has an outer appearance of trapezoid or rhombus, it is not considered as a correct display. Further, also, in a case where the positional relationship with respect to the featured image does not match, it is not considered as a correct display.

[0110] When the CPU 30 determines that the display is not correct, the CPU 30 corrects the keyboard image data for projection (Step S5). For example, if the captured keyboard image is deformed to have a trapezoid shape as shown in FIG. 19A, the CPU 30 corrects the keyboard image for projection in a manner that a width becomes narrower as it goes upward and a width becomes wider as it goes downward. For example, the CPU 30 corrects data of the keyboard image for projection to keyboard image data as shown in FIG. 20A. As a result, a rectangular shaped keyboard will be displayed on the desk 7. Incidentally, the CPU 30 corrects data, at the time of correction, in a manner that the keyboard to be projected becomes a predetermined size. Therefore, a keyboard adjusted to have the predetermined size and rectangular shape is displayed on the desk 7.

[0111] As shown in FIG. 19B, in a case where a captured keyboard image is inclined, the CPU 30 corrects keyboard image data in a manner that the inclination is amended as illustrated in FIG. 20B.

[0112] As described above, the CPU 30 corrects various kinds of deformation by correcting the keyboard image data, thereby projecting a rectangular shaped keyboard.

[0113] Further, the CPU 30 recognizes a featured image from the captured keyboard image to specify it. The CPU 30 corrects keyboard image data in a manner that the featured image and the projected keyboard have a positional relationship as initially recorded. In the present embodiment, as shown in FIG. 17, since the keyboard 27 is projected within the projectable area 29 with a sufficient margin, the above described adjustment can be performed.

[0114] Accordingly, a keyboard shaped into a predetermined sized rectangular shape will be fixedly displayed at a predetermined position on the desk 7 regardless of movement of the user 3.

[0115] Then, the CPU 30 specifies a finger of the user 3 in the captured image. The CPU 30 can specify the finger by finding out a round slender tip (Step S6). Subsequently, the CPU 30 determines on which key of the keyboard the specified finger resides. The CPU 30 performs input processing as the specified key was depressed (Step S7).

[0116] In a case where a finger is on the area 25, the CPU 30 acquires data of a position of the finger this time (Step S6), determines a moving direction and moving speed of a cursor on the basis of a previous position of the finger and the present position of the finger, and causes the cursor to move (Step S7).

[0117] By repeating the above described steps, input processing can be achieved. As described above, in the present embodiment, the neck band type wearable computer serves as a desktop computer if only with a display 5.

[0118] Incidentally, in the above described embodiment, the projector 58 and the camera 60 are connected via the fitting connectors 38. They may be connected via the connectors for external device connection 36 instead. Alternatively, they may be connected via a short-range communication circuit. Further, the display 5 is connected via a short-range communication circuit. It may be connected via the connectors for external device connection 36 instead.

4. Others

[0119] (1) In the above described embodiment, the wearable computer 2 used by wearing it around the neck was described. The wearable computer 2, having the same structure, may be used by winding it around a portion of a human body, e.g., the wrist and the ankle, as shown in FIG. 21. In FIG. 21, the cases 4, 6 are provided with engagement members 17, 19 for mutual engagement.

[0120] (3) In the above described embodiment, a double winding coil is used as the coil 80. A single winding coil may also be used instead. Even in this case, a bending state maintaining effect can be produced by tight contact/stretching of the tube 90.

[0121] Further, a multi-winding coil coiled more than three times may be used instead of the double winding coil. Even in this case, it is preferable that the coil is made in a manner that a wire having a round cross section and a wire having a triangular cross section are wound such that the neighboring wires contact each other.

[0122] In the above described embodiment, the coil 80 is composed of a wire having a round cross section and a wire having a triangular cross section. Instead thereof, a coil composed of a wire having a round cross section and a wire having a cross section of multangular shape more than square shape may be used. Alternatively, a wire having an angular (trapezoid, parallelogram, etc.) cross section may be used.

In the above described embodiment, a force in a direction in which the tube 90 compresses the coil 80 is applied. Alternatively, biasing means (flexible member, spring material, etc.) which is fixed to both ends of the coil 80 and biased to a shrinking direction may be provided.

[0123] (4) In the above described embodiment, a force in a direction in which the tube 90 compresses the coil 80 is applied. Alternatively, instead of applying the compression force, the coil 80 may be used as the flexible arm 8.

[0124] (5) In the above described embodiment, the flexible arm 8 is composed of the coil 80 and the tube 90. Alternatively, the flexible arm 8 may be composed of a hollow plastic member or a solid plastic member.

[0125] (6) In the above described embodiment, the wearable computer 2 is composed of the cases 4, 6, the connector case 10, and the flexible arm 8. Alternatively, they may be formed into one piece of plastic member. An example having such structure is illustrated in FIG. 23A. The arm 7 is provided continuously from the case 4. The arm 7 is formed into a thin plate shape. The arm 7 is formed into a shape that a portion of contacting the back of the neck extends long in up-and-down direction and is thin in front-to-rear direction. Further, when viewed from the back (from an arrow A direction in FIG. 23A), an upper central portion is formed into a recess shape as shown in FIG. 24. This allows a comfortable fitting to the back of the neck of the user 3.

[0126] On the other hand, the cases 4, 6 are formed thinly perpendicular to the arm 7 for the purpose of achieving stability on the chest of the user 3. To achieve this, the arm 7 and the cases 4, 6 are connected so as to have a right angle relationship as shown in FIG. 23B.

Further, in the present embodiment, instead of the connector case 10, the connectors for external device connection 36 are provided in the side surfaces of the cases 4, 6.

[0127] (6) In the above described embodiment, the cases 4, 6 are provided with the fitting connectors 38. They are not essential.

[0128] (7) In the above described embodiment, the attachment 50 is mechanically electrically connected via a USB connector. Alternatively, the attachment 50 may be only mechanically connected and may receive power supply by means of Bluetooth communication or electromagnetic coupling. A structure for mechanical connection may be provided in addition to the connector.

[0129] (8) In the above described embodiment, the attachment 50 is provided with a camera, a sensor, a projector, etc. Instead of them or in addition to them, a distance image camera (a camera for capturing an image having distance data to an object for each captured pixel) may be provided.

[0130] (9) In the embodiment as shown in FIG. 15, positioning is performed by using design of desk, etc. as a featured image. Alternatively, a marker, etc. may be put on the desk as a featured image.

[0131] Alternatively, instead of or in addition to the positioning by using the featured image, a control may be performed such that movement of a projector in an image capturing direction is detected by a nine-axis sensor which is equipped with an acceleration sensor, an angular speed sensor, a geomagnetic sensor, etc., thereby fixedly displaying a captured image.

Claims

1. A neck band type wearable computer comprising: a ring shaped main body having a par opened for wearing it around the neck; a computer built in the main body; a battery housed in the main body to supply electric power to the computer; and connectors for external device connection provided on the main body and connected to the computer.

2. The neck band type wearable computer according to claim 1, wherein the connectors are provided at a center portion of the ring shaped main body.

3. The neck band type wearable computer according to claim 1, further comprising: a short-range communication circuit housed in the main body and connected to the computer.

4. The neck band type wearable computer according to claim 1, further comprising: an attachment connected between ends of the ring shaped main body.

5. The neck band type wearable computer according to claim 4, wherein the attachment connects to at least one end of the ring shaped main body by magnet.

6. The neck band type wearable computer according to claim 1, wherein the neck band type wearable computer further comprises a head mounted display, wherein the head mounted display is stored in a side surface of the main body and can be taken out.

7. The neck band type wearable computer according to claim 1, wherein a camera, projector or a sensor is provided in the attachment.

8. The neck band type wearable computer according to claim 1, wherein the attachment comprises a rotary body provided with the camera, the projector or the sensor therein.

9-19. (canceled)