Patent US5598220A successfully refreshed from Google Patents.
US5598220A
Expired / Lapsed
US
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Digital signal with multilevel symbols and sync recognition
Assignee: Zenith Electronics LLC
•
Filing: 1994-03-02
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Granted: 1997-01-28
•
Expires: 2014-03-02
Abstract
Abstract A digital video field identification system includes video signals formatted in blocks of video symbols in repetitive data segments with each data segment including a synchronizing signal character. One data segment includes a field timing signal. A reference data segment which includes a reference field timing signal is developed at the receiver. A portion of each data segment is compared with the reference field timing signal and the number of symbol errors is accumulated for each data segment. The data segment exhibiting the least number of symbol errors is identified as the one having the field timing signal. A confidence counter stabilizes the identification of the one data segment. For terrestrial transmission, the video signals are precoded in modulo N form to enable NTSC co-channel interference rejection in the receiver by a linear filter. The linear filter undesirably reduces the S/N ratio by 3 dB and a selection circuit is included for bypassing the linear filter (for the video data) based upon the errors developed in the signal paths with and without the linear filter. For cable transmissions no linear filter is included.
Inventors
- 👤 Richard W. Citta
- 👤 Gary J. Sgrignoli
- 👤 Rudolf Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:12
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/24; H04N7/52; H04N7/54; H04N7/56; H04N21/00; H04N21/40; H04N21/41; H04N21/426
Claims Analysis
Total Claims: 91
Claim 1
Independent Claim
125 words
A digital television signal receiver comprising: means for receiving a digital signal formatted in blocks of video information in the form of multilevel data symbols and having repetitive data segments, each data segment including a plurality of said data symbols and each data segment including synchronizing signals for establishing a fixed timing relationship between successive ones of said data segments, with one of said data segments including a field timing signal; means for developing a reference field timing signal, at the repetition rate of said repetitive data segments; means for comparing at least a portion of each of said received data segments with said reference field time signal; and detection means responsive to the comparison for determining said one data segment in said video block.
Claim 2
Dependent Claim
125 words
A digital television signal receiver comprising: means for receiving a digital signal formatted in blocks of video information in the form of multilevel data symbols and having repetitive data segments, each data segment including a plurality of said data symbols and each data segment including synchronizing signals for establishing a fixed timing relationship between successive ones of said data segments, with one of said data segments including a field timing signal; means for developing a reference field timing signal, at the repetition rate of said repetitive data segments; means for comparing at least a portion of each of said received data segments with said reference field time signal; and detection means responsive to the comparison for determining said one data segment in said video block.
Claim 3
Dependent Claim
42 words
The receiver of claim 1 wherein each of said video blocks comprises a field with successive pairs of said fields forming a frame and wherein each of said successive pairs of fields includes a field timing signal for identifying its corresponding field.
Claim 4
Dependent Claim
60 words
The receiver of claim 1 wherein said comparing means includes accumulating means for counting the number of symbol errors between each of said portions of said data segments and said reference field timing signal and wherein said detection means selects, as said one data segment, the data segment in said video block that exhibits the least number of symbol errors.
Claim 5
Dependent Claim
27 words
The receiver of claim 1, further including confidence counter means coupled to the output of said detection means for stabilizing the selection of said one data segment.
Claim 6
Dependent Claim
42 words
The receiver of claim 4 wherein each of said video blocks comprises a field with successive pairs of said fields forming a frame and wherein each of said successive pairs of fields includes a field timing signal for identifying its corresponding field.
Claim 7
Dependent Claim
88 words
A digital television signal receiver comprising: means for receiving a digital signal formatted in blocks of video information having repetitive data segments with one of said data segments including a field timing signal; a filter for reducing certain co-channel interference characterizing said received signal; means for developing a reference field timing signal, at the repetitive rate of said repetitive data segments; and means for comparing at least a portion of each of said filtered data segments with said reference field timing signal to identify said one data segment.
Claim 8
Dependent Claim
88 words
A digital television signal receiver comprising: means for receiving a digital signal formatted in blocks of video information having repetitive data segments with one of said data segments including a field timing signal; a filter for reducing certain co-channel interference characterizing said received signal; means for developing a reference field timing signal, at the repetitive rate of said repetitive data segments; and means for comparing at least a portion of each of said filtered data segments with said reference field timing signal to identify said one data segment.
Claim 9
Dependent Claim
38 words
The receiver of claim 6 wherein said field timing signal has N levels and wherein said filter produces an output having M levels in response to said N level field timing signal, with M being greater than N.
Claim 10
Dependent Claim
14 words
The receiver of claim 7 wherein said developing means generates an M level signal.
Claim 11
Dependent Claim
33 words
The receiver of claim 6 wherein said video information comprises P level symbols and wherein said field timing signal comprises 2 level symbols nested within the outermost levels of said E level symbols.
Claim 12
Dependent Claim
70 words
The receiver of claim 6 wherein said video information is in the form of data symbols with each of said data segments including a plurality of said data symbols and further including: error means for identifying errors between each of said portions of said data segments and said reference field timing signal; and detection means responsive to said error means for determining said one data segment in said video block.
Claim 13
Dependent Claim
27 words
The receiver of claim 10, further including confidence counter means coupled to the output of said detection means for stabilizing the determination of said one data segment.
Claim 14
Dependent Claim
42 words
The receiver of claim 11 wherein each of said video blocks comprises a field with successive pairs of said fields forming a frame and wherein each of said successive pairs of fields includes a field timing signal for identifying its corresponding field.
Claim 15
Dependent Claim
38 words
The receiver of claim 6 wherein said video information comprises 4 level data symbols and said field timing signal comprises 2 level symbols that are, respectively, intermediate the upper and lower two levels of said 4 level symbols.
Claim 16
Dependent Claim
27 words
The receiver of claim 13 wherein said video information also includes 2 level data symbols occurring at the same levels as said field timing signal symbol levels.
Claim 17
Dependent Claim
45 words
The receiver of claim 6 further including: error means for identifying errors between each of said portions of said data segments and said reference field timing signal; and detection means responsive to said error means for determining said one data segment in said video block.
Claim 18
Dependent Claim
27 words
The receiver of claim 15, further including confidence counter means coupled to the output of said detection means for stabilizing the determination of said one data segment.
Claim 19
Dependent Claim
42 words
The receiver of claim 16 wherein each of said video blocks comprises a field with successive pairs of said fields forming a frame and wherein each of said successive pairs of fields includes a field timing signal for identifying its corresponding field.
Claim 20
Dependent Claim
109 words
A digital television signal receiver comprising: means for receiving a digital signal formatted in blocks of video information having repetitive data segments, each of said data segments including synchronizing signals for establishing a fixed timing relationship between successive ones of said data segments, with one of said data segments including a field timing signal; a filter for reducing certain co-channel interference characterizing said received signal; means for developing a reference field timing signal, at the repetition rate of said repetitive data segments; and means for comparing at least a portion of each of said filtered data segments with said reference field timing signal to identify said one data segment.
Claim 21
Dependent Claim
109 words
A digital television signal receiver comprising: means for receiving a digital signal formatted in blocks of video information having repetitive data segments, each of said data segments including synchronizing signals for establishing a fixed timing relationship between successive ones of said data segments, with one of said data segments including a field timing signal; a filter for reducing certain co-channel interference characterizing said received signal; means for developing a reference field timing signal, at the repetition rate of said repetitive data segments; and means for comparing at least a portion of each of said filtered data segments with said reference field timing signal to identify said one data segment.
Claim 22
Dependent Claim
72 words
The receiver of claim 18 wherein said video information is in the form of data symbols with each of said filtered data segments including a plurality of filtered data symbols and further including: error means for identifying errors between each of said portions of said filtered data segments and said reference field timing signal; and detection means responsive to said error means for determining said one data segment in said video block.
Claim 23
Dependent Claim
27 words
The receiver of claim 19, further including confidence counter means coupled to the output of said detection means for stabilizing the determination of said one data segment.
Claim 24
Dependent Claim
42 words
The receiver of claim 20 wherein each of said video blocks comprises a field with successive pairs of said fields forming a frame and wherein each of said successive pairs of fields includes a field timing signal for identifying its corresponding field.
Claim 25
Dependent Claim
39 words
The receiver of claim 18 wherein said received field timing signal has N levels and wherein said filter produces an output having M levels in response to said N level field timing signal, with M being greater than N.
Claim 26
Dependent Claim
14 words
The receiver of claim 18 wherein said developing means generates an M level signal.
Claim 27
Dependent Claim
33 words
The receiver of claim 18 wherein said video information comprises P level symbols and wherein said field timing signal comprises 2 level symbols nested within the outermost levels of said P level symbols.
Claim 28
Dependent Claim
47 words
The receiver of claim 18 wherein said video information comprises 4 level data symbols and wherein said field timing signal consists of 2 level symbols with the levels of said 2 level symbols being, respectively, intermediate the upper and lower two levels of said 4 level symbols.
Claim 29
Dependent Claim
27 words
The receiver of claim 25 wherein said video information also includes 2 level data symbols occurring at the same levels as said field timing signal symbol levels.
Claim 30
Dependent Claim
165 words
A digital television signal receiver comprising: means for receiving a digital signal formatted in blocks of video symbols having repetitive data segments with each data segment including a fixed number of symbols including a synchronizing character for establishing a fixed timing relationship, and one of said data segments including a field timing signal; a filter coupled to said receiving means for reducing certain co-channel interference characterizing said digital signal; means for developing a reference field timing signal, at the repetition rate of said repetitive data segments; means for comparing at least a portion of each of said filtered data segments with said reference field timing signal; error means for identifying errors between each of said portions of said filtered data segments and said reference field timing signal; detection means responsive to said error means for determining said one data segment in said video block; and confidence counter means coupled to the output of said detection means for stabilizing the determination of said one data segment.
Claim 31
Dependent Claim
165 words
A digital television signal receiver comprising: means for receiving a digital signal formatted in blocks of video symbols having repetitive data segments with each data segment including a fixed number of symbols including a synchronizing character for establishing a fixed timing relationship, and one of said data segments including a field timing signal; a filter coupled to said receiving means for reducing certain co-channel interference characterizing said digital signal; means for developing a reference field timing signal, at the repetition rate of said repetitive data segments; means for comparing at least a portion of each of said filtered data segments with said reference field timing signal; error means for identifying errors between each of said portions of said filtered data segments and said reference field timing signal; detection means responsive to said error means for determining said one data segment in said video block; and confidence counter means coupled to the output of said detection means for stabilizing the determination of said one data segment.
Claim 32
Dependent Claim
42 words
The receiver of claim 27 wherein each of said video blocks comprises a field with successive pairs of said fields forming a frame and wherein each of said successive pairs of fields includes a field timing signal for identifying its corresponding field.
Claim 33
Dependent Claim
61 words
The receiver of claim 28 wherein said identifying means includes accumulating means for counting the number of symbol errors between each of said portions of said filtered data segments and said reference field timing signal and wherein said detection means selects, as said one data segment, the data segment in said video block that exhibits the least number of symbol errors.
Claim 34
Dependent Claim
157 words
In a digital television signal system having multilevel symbols within an amplitude range, a receiver comprising: means for receiving a digital signal including repetitive data segments comprising N-level data symbols with one of said data segments including a field timing signal, said N level data symbols comprising any of said N levels within said amplitude range and said field timing signal being at two predetermined levels within said amplitude range; a linear co-channel interference reduction filter for providing an output filtered data segment in response to each received data segment, including an output filtered field timing data segment comprising a plurality of M-level symbols, where M is greater than N; means for developing an M level reference field timing signal, at the repetition rate of said repetitive data segments; and means for comparing at least a portion of each filtered output data segment with said M level reference field timing signal to identify said one data segment.
Claim 35
Dependent Claim
157 words
In a digital television signal system having multilevel symbols within an amplitude range, a receiver comprising: means for receiving a digital signal including repetitive data segments comprising N-level data symbols with one of said data segments including a field timing signal, said N level data symbols comprising any of said N levels within said amplitude range and said field timing signal being at two predetermined levels within said amplitude range; a linear co-channel interference reduction filter for providing an output filtered data segment in response to each received data segment, including an output filtered field timing data segment comprising a plurality of M-level symbols, where M is greater than N; means for developing an M level reference field timing signal, at the repetition rate of said repetitive data segments; and means for comparing at least a portion of each filtered output data segment with said M level reference field timing signal to identify said one data segment.
Claim 36
Dependent Claim
43 words
The receiver of claim 30, further including: error means for identifying errors between each of said portions of said filtered output data segments and said reference field timing signal; and detection means responsive to said error means for determining said one data segment.
Claim 37
Dependent Claim
27 words
The receiver of claim 31, further including confidence counter means coupled to the output of said detection means for stabilizing the determination of said one data segment.
Claim 38
Dependent Claim
56 words
The receiver of claim 30 wherein said repetitive segments of N level data symbols are formatted in frames consisting of two successive fields each including a field timing signal, and wherein two reference data segments are developed, each of said reference data segments including an M level reference field timing signal for identifying its corresponding field.
Claim 39
Dependent Claim
28 words
The receiver of claim 30 wherein said two predetermined levels comprise respective ones of said N levels which are less than the outermost levels of said amplitude range.
Claim 40
Dependent Claim
31 words
The receiver of claim 30 wherein N is equal to four and wherein said two predetermined levels are intermediate the first and second and second and third of said four levels.
Claim 41
Independent Claim
40 words
A method of operating a digital information signal transmission system comprising: transmitting data as 2 and 4 level symbols with the 2 levels being intermediate respective pairs of the 4 levels; and transmitting sync information at said 2 intermediate levels.
Claim 42
Independent Claim
40 words
A method of operating a digital information signal transmission system comprising: transmitting data as 2 and 4 level symbols with the 2 levels being intermediate respective pairs of the 4 levels; and transmitting sync information at said 2 intermediate levels.
Claim 43
Independent Claim
52 words
A method of operating a digital information transmission system comprising: transmitting data as two level and four level symbols having one of six different amplitudes within an amplitude range; and transmitting sync information as two level symbols, where said two levels are at the second and fifth of said six different amplitudes.
Claim 44
Independent Claim
52 words
A method of operating a digital information transmission system comprising: transmitting data as two level and four level symbols having one of six different amplitudes within an amplitude range; and transmitting sync information as two level symbols, where said two levels are at the second and fifth of said six different amplitudes.
Claim 45
Dependent Claim
91 words
A digital signal receiver comprising: means for receiving a digital signal comprising repetitive data segments of N and M level symbols, where M is greater than N, with one of said data segments including a field timing signal, the field timing signal being generated using only said N levels; means for developing a reference field timing signal at the repetition rate of said repetitive data segments; and means for comparing at least a portion of each received data segment with said reference field timing signal to identify said one data segment.
Claim 46
Dependent Claim
91 words
A digital signal receiver comprising: means for receiving a digital signal comprising repetitive data segments of N and M level symbols, where M is greater than N, with one of said data segments including a field timing signal, the field timing signal being generated using only said N levels; means for developing a reference field timing signal at the repetition rate of said repetitive data segments; and means for comparing at least a portion of each received data segment with said reference field timing signal to identify said one data segment.
Claim 47
Dependent Claim
83 words
The receiver of claim 38 including a co-channel interference reduction filter for providing a P-level output signal in response to said received one data segment and a Q level output signal in response to other received data segments, where Q is equal to 2M-1 and P is equal to 2N-1, said reference field timing signal comprising P levels and said comparing means comprising means for comparing at least a portion of each of said output signals with said P-level reference field timing signal.
Claim 48
Dependent Claim
19 words
The receiver of claim 39 wherein N is two, M is eight, Q is fifteen and P is three.
Claim 49
Independent Claim
58 words
A method of transmitting a digital signal comprising: generating a group of repetitive data segments comprising N and M level symbols, where M is greater than N; generating a special data segment including a field timing signal comprising a plurality of said N level symbols; and transmitting said group of repetitive data segments and said field timing signal.
Claim 50
Independent Claim
58 words
A method of transmitting a digital signal comprising: generating a group of repetitive data segments comprising N and M level symbols, where M is greater than N; generating a special data segment including a field timing signal comprising a plurality of said N level symbols; and transmitting said group of repetitive data segments and said field timing signal.
Claim 51
Dependent Claim
19 words
The method of claim 41 including precoding said group of repetitive data segments except for said special data segment.
Claim 52
Dependent Claim
21 words
The method of claim 42 wherein said precoding is accomplished by modulo 4 precoding of said group of repetitive data segments.
Claim 53
Dependent Claim
42 words
The method of claim 41 wherein N is equal to 2 and M is equal to 4 and wherein the levels of said 2 level symbols comprise the levels intermediate the upper and lower pairs of levels of said 4 level symbols.
Claim 54
Dependent Claim
77 words
A digital signal receiver comprising: means for receiving a digital video signal comprising repetitive data segments of 8 level symbols, with one of said data segments including a field timing signal of 2 level symbols; means for developing a reference field timing signal at the repetition rate of said repetitive data segments; and means for comparing at least a portion of each received data segment with said reference field timing signal to identify said one data segment.
Claim 55
Dependent Claim
77 words
A digital signal receiver comprising: means for receiving a digital video signal comprising repetitive data segments of 8 level symbols, with one of said data segments including a field timing signal of 2 level symbols; means for developing a reference field timing signal at the repetition rate of said repetitive data segments; and means for comparing at least a portion of each received data segment with said reference field timing signal to identify said one data segment.
Claim 56
Dependent Claim
27 words
The receiver of claim 45 wherein the 2 levels of said field timing signal symbols coincide with the second and seventh levels of said 8 level symbols.
Claim 57
Dependent Claim
42 words
The receiver of claim 45 wherein each of said data segments is preceded by a 2 level data segments synchronizing character, said 2 levels of said data segment synchronizing character being the same as the 2 levels of said field timing signal.
Claim 58
Dependent Claim
76 words
A digital signal receiver comprising: means for receiving a digital signal comprising repetitive data segments of 16 level symbols, with one of said data segments including a field timing signal of 2 level symbols; means for developing a reference field timing signal at the repetition rate of said repetitive data segments; and means for comparing at least a portion of each received data segment with said reference field timing signal to identify said one data segment.
Claim 59
Dependent Claim
76 words
A digital signal receiver comprising: means for receiving a digital signal comprising repetitive data segments of 16 level symbols, with one of said data segments including a field timing signal of 2 level symbols; means for developing a reference field timing signal at the repetition rate of said repetitive data segments; and means for comparing at least a portion of each received data segment with said reference field timing signal to identify said one data segment.
Claim 60
Dependent Claim
27 words
The receiver of claim 48 wherein the 2 levels of said field timing signal symbols coincide with the fourth and thirteenth levels of said 16 level symbols.
Claim 61
Dependent Claim
42 words
The receiver of claim 48 wherein each of said data segments is preceded by a 2 level data segment synchronizing character, said 2 levels of said data segment synchronizing character being the same as the 2 levels of said field timing signal.
Claim 62
Independent Claim
42 words
A method of operating a digital transmission system comprising: transmitting data as 8 level symbols with a given amplitude range; and transmitting sync information as 2 level symbols having amplitudes that correspond to levels 2 and 7 of said 8 level symbols.
Claim 63
Independent Claim
42 words
A method of operating a digital transmission system comprising: transmitting data as 8 level symbols with a given amplitude range; and transmitting sync information as 2 level symbols having amplitudes that correspond to levels 2 and 7 of said 8 level symbols.
Claim 64
Independent Claim
42 words
A method of operating a digital transmission system comprising: transmitting data as 16 level symbols with a given amplitude range; and transmitting sync information as 2 level symbols having amplitudes that correspond to levels 4 and 13 of the 16 level symbols.
Claim 65
Independent Claim
42 words
A method of operating a digital transmission system comprising: transmitting data as 16 level symbols with a given amplitude range; and transmitting sync information as 2 level symbols having amplitudes that correspond to levels 4 and 13 of the 16 level symbols.
Claim 66
Independent Claim
44 words
A method of operating a digital transmission system comprising: transmitting data as multilevel symbols with a given amplitude range; and transmitting sync information as 2 level symbols having amplitudes that occur at respective levels nested within the outermost levels of said multi level symbols.
Claim 67
Independent Claim
44 words
A method of operating a digital transmission system comprising: transmitting data as multilevel symbols with a given amplitude range; and transmitting sync information as 2 level symbols having amplitudes that occur at respective levels nested within the outermost levels of said multi level symbols.
Claim 68
Dependent Claim
76 words
A digital signal receiver comprising: means for receiving a digital signal comprising repetitive data segments of N level symbols, with one of said data segments including a field timing signal of 2 level symbols; means for developing a reference field timing signal at the repetition rate of said repetitive data segments; and means for comparing at least a portion of each received data segment with said reference field timing signal to identify said one data segment.
Claim 69
Dependent Claim
76 words
A digital signal receiver comprising: means for receiving a digital signal comprising repetitive data segments of N level symbols, with one of said data segments including a field timing signal of 2 level symbols; means for developing a reference field timing signal at the repetition rate of said repetitive data segments; and means for comparing at least a portion of each received data segment with said reference field timing signal to identify said one data segment.
Claim 70
Dependent Claim
36 words
The receiver of claim 54 wherein said N level symbols comprise 8 level symbols and wherein the 2 levels of said field timing signal symbols coincide with levels 2 and 7 of said 8 level symbols.
Claim 71
Dependent Claim
35 words
The receiver of claim 54 wherein said N level symbols comprise 16 level symbols and wherein the two levels of said field timing signal coincide with levels 4 and 13 of said 16 level symbols.
Claim 72
Dependent Claim
38 words
The receiver of claim 54 where N is at least equal to 4 and wherein the two levels of said field timing signal occur at respective levels intermediate selected pairs of adjacent levels of said N level symbols.
Claim 73
Dependent Claim
37 words
The receiver of claim 6 wherein said video information comprises 8 level data symbols and wherein said field timing signal comprises 2 level symbols that correspond to levels 2 and 7 of said 8 level data symbols.
Claim 74
Dependent Claim
49 words
The receiver of claim 6 wherein said video information comprises R level data symbols and said field timing signal comprises S level symbols, where R is greater than S, the levels of said field timing signal occurring at respective levels intermediate selected levels of said R level data symbols.
Claim 75
Dependent Claim
37 words
The receiver of claim 18 wherein said video information comprises 8 level data symbols and wherein said field timing signal comprises 2 level symbols that correspond to levels 2 and 7 of said 8 level data symbols.
Claim 76
Dependent Claim
49 words
The receiver of claim 18 wherein said video information comprises R level data symbols and said field timing signal comprises S level symbols, where R is greater than S, the levels of said field timing signal occurring at respective levels intermediate selected levels of said R level data symbols.
Claim 77
Dependent Claim
27 words
The receiver of claim 30 wherein N is equal to 8 and wherein said two predetermined levels correspond to levels 2 and 7 of said 8 levels.
Claim 78
Dependent Claim
36 words
The method of claim 41 wherein N is equal to 2 and M is equal to 8 and wherein the levels of said 2 level symbols comprise levels 2 and 7 of said 8 level symbols.
Claim 79
Dependent Claim
30 words
The digital receiver of claim 48 wherein the two levels of said field timing signal symbols occur at respective levels nested within the outermost levels of said 16 level symbols.
Claim 80
Dependent Claim
50 words
A digital signal receiver comprising: means for receiving a digital signal comprising 8 level data symbols and 2 level sync symbols; means for generating a timing signal in response to said received 2 level sync signal; and means responsive to said timing signal for processing said 8 level data symbols.
Claim 81
Dependent Claim
50 words
A digital signal receiver comprising: means for receiving a digital signal comprising 8 level data symbols and 2 level sync symbols; means for generating a timing signal in response to said received 2 level sync signal; and means responsive to said timing signal for processing said 8 level data symbols.
Claim 82
Dependent Claim
25 words
The receiver of claim 65 wherein the levels of said 2 level signals coincide with levels 2 and 7 of said 8 level data symbols.
Claim 83
Dependent Claim
50 words
A digital signal receiver comprising: means for receiving a digital signal comprising 16 level data symbols and 2 level sync symbols; means for generating a timing signal in response to said received 2 level sync signal; and means responsive to said timing signal for processing said 16 level data symbols.
Claim 84
Dependent Claim
50 words
A digital signal receiver comprising: means for receiving a digital signal comprising 16 level data symbols and 2 level sync symbols; means for generating a timing signal in response to said received 2 level sync signal; and means responsive to said timing signal for processing said 16 level data symbols.
Claim 85
Dependent Claim
25 words
The receiver of claim 65 wherein the levels of said 2 level signals coincide with levels 4 and 13 of said 16 level data symbols.
Claim 86
Dependent Claim
14 words
The method of claim 36 further comprising receiving the transmitted data and sync information.
Claim 87
Dependent Claim
14 words
The method of claim 37 further comprising receiving the transmitted data and sync information.
Claim 88
Dependent Claim
12 words
The method of claim 41 further comprising receiving the transmitted data segments.
Claim 89
Dependent Claim
14 words
The method of claim 51 further comprising receiving the transmitted data and sync information.
Claim 90
Dependent Claim
14 words
The method of claim 52 further comprising receiving the transmitted data and sync information.
Claim 91
Dependent Claim
14 words
The method of claim 53 further comprising receiving the transmitted data and sync information.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-28 | 2000-07-29 | 2001-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-28 | 2004-07-29 | 2005-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-28 | 2008-07-29 | 2009-01-28 | $7700.00 | Window Closed / Lapsed |