초록 ▼

In a satellite communications system, where a user terminal 34 may wish to page more than one satellite 10 or more than one spot beam 30, and where the definition of a timeslot 38 for a paging channel 48 occurs a predetermined period after the sending of a broadcast burst 42, the possibility of sust

In a satellite communications system, where a user terminal 34 may wish to page more than one satellite 10 or more than one spot beam 30, and where the definition of a timeslot 38 for a paging channel 48 occurs a predetermined period after the sending of a broadcast burst 42, the possibility of sustained temporal collision between paging channels 48 between adjacent satellites 10 or adjacent spot beams 30 is avoided by periodically, progressively, and cyclically, moving the predetermined period.

대표청구항 ▼

In a satellite communications system, where a user terminal 34 may wish to page more than one satellite 10 or more than one spot beam 30, and where the definition of a timeslot 38 for a paging channel 48 occurs a predetermined period after the sending of a broadcast burst 42, the possibility of sust

In a satellite communications system, where a user terminal 34 may wish to page more than one satellite 10 or more than one spot beam 30, and where the definition of a timeslot 38 for a paging channel 48 occurs a predetermined period after the sending of a broadcast burst 42, the possibility of sustained temporal collision between paging channels 48 between adjacent satellites 10 or adjacent spot beams 30 is avoided by periodically, progressively, and cyclically, moving the predetermined period. lack toner patches; measuring an amount of light that is reflected off of said at least two single layer non-black toner patches; and combining information for said multi-layer toner patch and said at least two single layer non-black toner patches for adjusting at least one electrophotographic condition for at least one color plane. 12. A method of calibrating a multi-color electrophotographic machine having an image bearing surface, said method comprising the steps of: superimposing toner patches of each of a plurality of colors on the image-bearing surface to thereby form a multi-layer test toner patch; emitting light onto said multi-layer toner patch; measuring an amount of light that is reflected off of said multi-layer toner patch; emitting light onto a bare section of the image-bearing surface, the bare section having substantially no toner thereon; measuring an amount of light that is reflected off of the bare section; adjusting at least one electrophotographic condition, said adjusting being dependent upon each of said measuring steps; and repeating said superimposing step, said emitting steps and said measuring steps after a change in a reflectivity of the image bearing surface occurs, said adjusting step being dependent upon said repeated measuring steps. 13. The method of claim 12, comprising the further steps of: calculating a first mathematical relationship between the amount of light that is reflected off of said multi-layer toner patch before the change in reflectivity of the image bearing surface and the amount of light that is reflected off of the bare section before the change in reflectivity of the image bearing surface; and calculating a second mathematical relationship between the amount of light that is reflected off of said multi-layer toner patch after the change in reflectivity of the image bearing surface and the amount of light that is reflected off of the bare section after the change in reflectivity of the image bearing surface, said adjusting step being dependent upon each of the first mathematical relationship and the second mathematical relationship. 14. The method of claim 13, wherein said first mathematical relationship comprises a first ratio of the amount of light that is reflected off of said multi-layer toner patch before the change in reflectivity of the image bearing surface to the amount of light that is reflected off of the bare section before the change in reflectivity of the image bearing surface, said second mathematical relationship comprising a second ratio of the amount of light that is reflected off of said multi-layer toner patch after the change in reflectivity of the image bearing surface to the amount of light that is reflected off of the bare section after the change in reflectivity of the image bearing surface. 15. A method of calibrating a multi-color electrophotographic machine having an image bearing surface, said method comprising the steps of: superimposing toner patches of each of a plurality of colors on the image-bearing surface to thereby form a multi-layer test toner patch, the plurality of colors including cyan, magenta and yellow; emitting light onto said multi-layer toner patch; measuring an amount of light that is reflected off of said multi-layer toner patch; emitting light onto a bare section of the image-bearing surface, the bare section having substantially no toner thereon; measuring an amount of light that is reflected off of the bare section; and adjusting at least one electrophotographic condition, said adjusting being dependent upon each of said measuring steps. 16. A method of calibrating a multi-color electrophotographic machine having an image bearing surface, said method comprising the steps of: superimposing toner patches of each of a plurality of colors on the image-bearing surface to thereby form a multi-layer test toner patch; emitting light onto said multi-layer toner patch; measuring an amount of light th