1-48. (canceled)
49. A program reception execution apparatus that receives and executes a program, the program having been transmitted by a program transmission apparatus after being divided into a plurality of partial programs that each include a set of next partial program information which shows what partial program should be executed following a present partial program,
the program reception execution apparatus comprising:
storage means including a program storage area;
reception means for receiving the plurality of partial programs and storing the plurality of partial programs in the storage means; and
execution control means for executing the plurality of partial programs that are stored in the storage means,
wherein the execution control means includes:
a program presence judgment unit for judging whether an indicated partial program is stored in the storage means;
a program preparation unit
(1) for referring to a set of next partial program information, for indicating, when a first partial program is being executed and a second partial program is to be executed next, the second partial program based on the set of next partial program information, and for having the program presence judgment unit judge whether the second partial program is stored in the storage means,
(2) for preparing for an execution of the second partial program when the program presence judgment unit has judged that the second partial program is present,
(3) for waiting and not allowing an execution of the program to advance when the program presence judgment unit has judged that the second partial program is not present, and for preparing for an execution of the second partial program when the program presence judgment unit judges that the second partial program is present; and
a program execution unit for executing a plurality of instructions in a partial program whose execution has been prepared by the program preparation unit and for activating the program preparation unit.
50. program transmission apparatus for transmitting a program to a program reception execution apparatus, comprising:
storage means for storing the program beforehand;
dividing means for dividing the program stored in the storage means into a plurality of partial programs;
identifier assigning means for assigning a different identifier to each of the partial programs generated by the dividing means to identify each of the partial programs; and
transmission means for transmitting the plurality of partial programs.
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 bi-stable projection screen, at least comprising:
a bi-stable display unit, selectively operating in a first mode or a second mode when actuated, wherein when operating in the first mode, the bi-stable display unit receives a projection light and emits the projection light after modulation, when operating in the second mode, the bi-stable display unit is a pattern, and the display unit maintains the first mode or the second mode without electrical power; and
a light diffusion unit, receiving and diffusing the modulated projection light and then emitting it.
2. The bi-stable projection screen according to claim 1, wherein the light diffusion unit is a bulk light diffuser, the bulk light diffuser comprises a body and a plurality of particles disposed in the body, and a light refractive index of the body is different from that of the particles.
3. The bi-stable projection screen according to claim 2, wherein a material of the body and the particles is at least one selected from a group consisting of poly(methylmethacrylate) (PMMA), polycarbonate (PC), methacrylate-co-styrene copolymer (MS), polystyrene (PS), poly(ethylene terephthalate) (PET), cycloolefin polymer (COP), or hydrogenated polystyrene.
4. The bi-stable projection screen according to claim 2, wherein the light diffusion unit comprises at least one light diffusion surface to diffuse the modulated projection light.
5. The bi-stable projection screen according to claim 1, wherein the light diffusion unit is a surface diffuser comprising at least one light diffusion surface to diffuse the modulated projection light.
6. The bi-stable projection screen according to claim 5, wherein the light diffusion surface comprises a lenticular lens array.
7. The bi-stable projection screen according to claim 1, wherein the projection light is modulated by the bi-stable display unit after passing through the light diffusion unit, and when the bi-stable display unit operates in the first mode, the projection light that has passed through the light diffusion unit is reflected and enters the light diffusion unit again.
8. The bi-stable projection screen according to claim 7, wherein the bi-stable display unit is a cholesteric liquid crystal display comprising a transparent substrate, an light absorbing substrate, and a plurality of multilayer nematic liquid crystals between the two substrates, in which when the cholesteric liquid crystal display is actuated to the first mode, the multilayer nematic liquid crystals operate in a stable state of a planar texture, and when the cholesteric liquid crystal display is actuated to the second mode, part of the multilayer nematic liquid crystals operate in a stable state of a planar texture, and part of the multilayer nematic liquid crystals operate in a stable state of a focal-conic texture, so as to form the pattern.
9. The bi-stable projection screen according to claim 7, wherein the bi-stable display unit is a cholesteric liquid crystal display comprising a transparent substrate and a plurality of micro-cells dispersed in the transparent substrate, and each of the micro-cells comprises a transparent liquid and a plurality of cholesteric liquid crystal micro-particles disposed in the transparent liquid, in which when the cholesteric liquid crystal display is actuated to the first mode, the micro-cells operate in a stable state of reflecting light, and when the cholesteric liquid crystal display is actuated to the second mode, part of the micro-cells operate in a stable state of reflecting light, and part of the micro-cells operate in a stable state of absorbing light, so as to form the pattern.
10. The bi-stable projection screen according to claim 1, wherein when the bi-stable display unit operates in the first mode, the projection light passes through the bi-stable display unit.