1. A display device comprising:
a display unit including a first portion and a second portion;
a first storing unit that stores a plurality of title strings corresponding to a plurality of screen images including a base screen image and being arranged hierarchically from the base screen image along a screen navigation path starting from the base screen image;
a first display control unit that displays a first screen image on the first portion;
a second display control unit that displays a navigation string on the second portion based on screen navigation data, the screen navigation data indicating relationships between the screen images, the navigation string including at least one of the title strings corresponding to at least one of the screen images which is positioned in a part of the screen navigation path from the base screen image to the first screen image;
a marking unit that attaches a mark to one of the title strings corresponding to a third screen image of a higher hierarchical level than the first screen image and included in the navigation string in order to distinguish the title string attached with the mark from the other title strings;
a first transition unit that changes the first screen image displayed on the first portion to a second screen image of a lower hierarchical level than the first screen image when a user performs a prescribed selection, thereby displaying the second screen image on the first portion; and
a second transition unit that changes the first screen image to the third screen image when the user performs a reverse transition operation, thereby displaying the third screen image on the first portion.
2. The display device according to claim 1, wherein the second display control unit displays the navigation string including a separating character attached to the head of each title string, and the marking unit modifies the separating character corresponding to the third screen image to a form different from the other separating character, making the modified separating character function as the mark.
3. The display device according to claim 1, further comprising an operation unit that is operated by the user to input an instruction and that has a prescribed design, wherein the mark has the prescribed design.
4. The display device according to claim 1, further comprising: a second storing unit that stores the screen navigation data, indicating a destination screen image as the third screen image for each of the plurality of screen images; and a specifying unit that specifies one of the plurality of screen images as the destination screen image for one of the second and third screen images based on the screen navigation data each time one of the first and second transition units changes the first screen image,
wherein the marking unit attaches the mark to one of the title strings corresponding to the destination screen image specified by the specifying unit.
5. A method for displaying one of a plurality of screen images on a display unit of a display device, the plurality of screen images including a base screen image and being arranged hierarchically from the base screen image along a screen navigation path starting from the base screen image, the method comprising:
(a) displaying a first screen image on a first portion of the display unit;
(b) displaying a navigation string on a second portion of the display unit based on screen navigation data, the screen navigation data indicating relationships between the screen images, the navigation string including at least one of title strings corresponding to at least one of the screen images which is positioned in a part of the screen navigation path from the base screen image to the first screen image;
(c) attaching a mark to one of the title strings corresponding to a third screen image of a higher hierarchical level than the first screen image and included in the navigation string in order to distinguish the title string attached with the mark from the other title strings;
(d) changing the first screen image displayed on the first portion to a second screen image of a lower hierarchical level than the first screen image when a user performs a prescribed selection, thereby displaying the second screen image on the first portion; and
(e) changing the first screen image to the third screen image when the user performs a reverse transition operation, thereby displaying the third screen image on the first portion.
6. The method according to claim 5, wherein the displaying step (b) displays the navigation string including a separating character attached to the head of each title string, and the attaching step (c) modifies the separating character corresponding to the third screen image to a form different from the other separating character, making the modified separating character function as the mark.
7. The method according to claim 5, wherein the reverse transition operation is performed by the user operating an operation unit having a prescribed design, and the mark has the prescribed design.
8. The method according to claim 5, further comprising: (f) specifying one of the plurality of screen images as a destination screen image for one of the second and third screen images each time one of the changing steps (d) (e) changes the first screen image based on the screen navigation data, the screen navigation data indicating the destination screen image as the third screen image for each of the plurality of screen images,
wherein the attaching step (c) attaches the mark to one of the title strings corresponding to the destination screen image specified by the specifying step (f).
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A book holder stand comprising:
a pair of parts each part comprised of a shallow generally rectangular open topped box having a bottom panel and four side walls, said parts hinged together along one side by interfitting hinge features to be positioned with the side walls abutting each other in a closed condition of said parts, and extending directly away from each other in a spread apart flattened position;
a flip down shelf extending within side walls of each part across the bottom panel thereof adjacent a bottom wall, each shelf pivotally mounted at each end to a respective sidewall of each part to selectively be positionable in a stowed position flipped up into said respective part and a flipped down position projecting normally to the plane of the bottom panel of an associated part to enable support thereon of a book resting on edge on said shelves.
2. The book holder stand according to claim 1 further including a pair of elongated book retainer elements each element pivoted to a respective shelf to swing a free end across an opened book resting on edge on said shelves in their flipped down position, with a tip portion pressed against said opened book to hold said opened book against said opened parts.
3. The book holder stand according to claim 2 wherein each of said retainer elements has a first segment pivotally received into a socket in an outer face of an associated shelf and an angled back end segment extending down from an outer portion of said first segment to engage an open book disposed on edge on said shelves, said angled back end segment positionable against an upper surface of an associated shelf to be flipped up with said associated shelf and thereafter able to be swung across said opened book by being pivoted in said socket in said shelf outer face.
4. The book holder stand according to claim 1 further including a locking rod slidable through a pair of tubes each affixed to a respective part adjacent said hinged sides to prevent hinging movement of said parts.
5. The book holder stand according to claim 1 further including an elongated prop rod pivotally mounted at one end to one of said parts extending along and outside of said hinged side thereof and able to be swing out of a plane generally defined by said part to an inclined position thereby enabling supporting said book holder stand in a leaned back orientation.
6. The book holder stand according to claim 5 wherein a groove is formed angled across said hinged side of said part receiving said prop rod therein to secure the same in said inclined position.
7. The book holder stand according to claim 1 further including a series of tabs projecting from a side wall of each part opposite said hinge side and interleaved with each other and aligned with engagement features on an opposing side wall on the other part to releasably secure said parts together.
8. The book holder stand according to claim 3 wherein each of said parts include a rib extending across a bottom thereon located to abut against a respective shelf when flipped up into said stowed position, said angled back segment of each retainer element pivoted against a top surface of an associated shelf, and wherein said rib is notched to accommodate said angled back segment with said associated shelf flipped up against said associated rib.
9. The book holder stand according to claim 3 wherein said first segment of each of said retainer elements is received into an end of one associated shelf away from said hinged side of each part and extends generally parallel to an outer wall of said part, and wherein each angled back segment extend down and towards said hinged side of a respective rod with said shelves in said stowed position.
10. The book holder stand according to claim 1 wherein each part has a bottom side wall and wherein each shelf pivots against said bottom side wall when flipped down to be supported thereby.