초록 ▼

A play list manager is disclosed that can be used to create and update play lists. The play lists can be used for audio information, visual information, or a combination of audio and visual information. The user of the play list manager creates a play list and specifies certain criteria for automati

A play list manager is disclosed that can be used to create and update play lists. The play lists can be used for audio information, visual information, or a combination of audio and visual information. The user of the play list manager creates a play list and specifies certain criteria for automatically adding tracks to the play list. When a new track is added to the environment, the system tests whether the track's properties satisfy the criteria for the play list. If so, the new track is automatically added to the play list. In one alternative, a user can select a predefined play list, whose criteria has already been created. Upon selection of the predefined play list, the play list manager accesses each track and adds the track to the play list if the track's properties satisfy the criteria for the predefined play list.

대표청구항 ▼

A play list manager is disclosed that can be used to create and update play lists. The play lists can be used for audio information, visual information, or a combination of audio and visual information. The user of the play list manager creates a play list and specifies certain criteria for automati

A play list manager is disclosed that can be used to create and update play lists. The play lists can be used for audio information, visual information, or a combination of audio and visual information. The user of the play list manager creates a play list and specifies certain criteria for automatically adding tracks to the play list. When a new track is added to the environment, the system tests whether the track's properties satisfy the criteria for the play list. If so, the new track is automatically added to the play list. In one alternative, a user can select a predefined play list, whose criteria has already been created. Upon selection of the predefined play list, the play list manager accesses each track and adds the track to the play list if the track's properties satisfy the criteria for the predefined play list. tributing frame. 8. The telecommunications fiber optic infrastructure of claim 6, further comprising: a fiber cable pathway connecting said two parallel rows of standard equipment bays to said two fiber distributing frames. 9. The telecommunications fiber optic infrastructure of claim 3, further comprising: a standard length connector jumper connecting said at least one central office equipment to an equipment bay connector, said equipment bay connector being proximately located to an equipment bay corresponding to an inside mounting position on which said at least one central office equipment is located; and an equipment cable coupled, using an interconnect, between said equipment bay connector and said outside plant portion. 10. The telecommunications fiber optic infrastructure of claim 9, wherein said equipment cable is deployed along a fiber cable pathway. 11. The telecommunications fiber optic infrastructure of claim 10, wherein said equipment cable comprises: a standard length first section having a length to reach a farthest connector on said outside plant portion; a second section having a length which spans a distance from said fiber center distributing frame to an equipment bay benchmark; and a third standard length section having at length which spans from said equipment bay benchmark to said equipment bay connector. 12. The telecommunications fiber optic infrastructure of claim 11, wherein said equipment cable includes at least one reference mark to facilitate deploying said equipment cable along said fiber cable pathway. 13. The telecommunications fiber optic infrastructure of claim 11, wherein said standard length first section further comprises a plurality of spliced standard length fiber jumpers. 14. The telecommunications fiber optic infrastructure of claim 1, wherein a ratio of outside plant portion termination connections to inside plant portion termination connections is less than 1 to 1. 15. The telecommunications fiber optic infrastructure according to claim 1, wherein said connection from said outside plant portion to said inside plant portion is made by interconnection rather than cross-connection. 16. The telecommunication fiber optic infrastructure according to claim 1, wherein a ratio of outside plant portion termination connections to inside plant portion termination connections is 1:2. 17.The telecommunication fiber optic infrastructure according to claim 1, wherein the at least one fiber center distribution frame module include a plurality of fiber center distribution frame shelves arranged so that all equipped fiber span configurations within the plurality of fiber center distribution frame shelves are interconnectable. 18. The telecommunication fiber optic infrastructure according to claim 17, wherein the plurality of fiber center distribution frame shelves are each configured to accommodate 72 fiber spans. 19. The telecommunication fiber optic infrastructure according to claim 17, wherein the plurality of fiber center distribution frame shelves are each configured to accommodate 144 inside plant portion termination connections. 20. The telecommunication fiber optic infrastructure according to claim 17, wherein the fiber span configuration include at least one of a point-to-point span configuration and a ring fiber spans configuration. s the washers in one 360° rotation thus eliminating weak points in the washer due to multiple cuts. Alternately a plug is provided for the end plate holes which are adaptable to several size holes to reduce the number of plugs required. substantially the same as the crystal axes of the third and fourth birefringent elements, respectively. 6. The cascaded optical filter according to claim 4, further comprising: polarization beam splitting means for dividing the input beam of light into two orthogonally polarized sub-beams after passing through the first optical filtering means; and polarization rotating means for rotating the polarization of at least one of the sub-beams by 90° after exiting the first optical filtering means and before entering the second optical filtering means, whereby the polarization of the input beam of light is the same upon entering both the first and second optical filtering means; and wherein the crystal axes of the first and second birefringent elements are oriented differently than the crystal axes of the third and fourth birefringent elements, respectively. 7. The cascaded optical filter according to claim 1, wherein the first and second optical filtering means include birefringent elements; and wherein the cascaded optical filter further comprises: polarization beam splitting means for dividing the input beam of light into two orthogonally polarized sub-beams after passing through the first optical filtering means from a first end to a second end; and polarization rotating means for adjusting the polarization of at least one of the sub-beams after passing through the first optical filtering means to ensure that the polarization of the sub-beams entering the second optical filtering means is orthogonal to the polarization of the input beam of light entering the first optical filtering means. 8. The cascaded optical filter according to claim 7, wherein the first optical filtering means comprises an optical channel interleaver, through which the input beam of light passes from the first end to the second end; and wherein the second optical filtering means also comprises the optical channel interleaver, through which the sub-beams pass a second time from the first end to the second end. 9. The cascaded optical filter according to claim 7, wherein the first optical filtering means comprises an optical channel interleaver, through which the input beam of light passes from the first end to the second end; and wherein the second optical filtering means also comprises the optical channel interleaver, through which the sub-beams pass a second time from the second end to the first end. 10. The cascaded optical filter according to claim 1, wherein the first optical filtering means comprises a first birefringent element with a thickness L, and a second birefringent element with a thickness 2L; wherein H1(f)=e3iγ.f.(α0+α1.eiβ.f +α2.e2iβ.f +α3.e3iβ.f); in which: β=2πΔLΔn/c, γ2πLno/c; Δn=ne-no(birefringence along an extraordinary axis of the birefringent elements--birefringence along an ordinary axis of the birefringent elements); αo=cos θ1.cos θ2.cos θ3; α1=-sin θ1.sin θ2.cos θ3; α2=-cos θ1.sin θ2.sin θ3; α3=-sin θ1.cos θ2.sin θ3; θ1 is an angle between a polarization of an input beam of light and a crystal axis of the first birefringent element; θ2 is an angle between that of the first birefringent element and a crystal axis of the second birefringent element; and θ3 is an angle between the crystal axis of the second birefringent element and the polarization of the input beam of light; wherein the second optical filtering means comprises a third birefringent element with a thickness L, and a fourth birefringent element with a thickness 2L; wherein H2(f)=(α3'+α2'.eiβ.f +α1'.e2iβ.f +α0'.e3iβ.f) in which: αo'=cos θ1'.cos θ2'.cos θ3'; α1'=-sin θ1'.sin θ2'.cosθ3'; α2'=-cos θ1'.sin