US4961182A
Expired / Lapsed
US
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Information retrieving system with level clamping
Assignee: Hitachi Ltd
•
Filing: 1988-06-29
•
Granted: 1990-10-02
•
Expires: 2008-06-29
Abstract
Abstract When the data encoded on a recording track is retrieved, the present invention reads the encoded data from the recording track, clamps the read encoded data in predetermined areas of the recording track and interprets the clamped encoded data in accordance with a threshold level.
Inventors
- 👤 Atsushi Saito
- 👤 Takeshi Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:50
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/10009; G11B20/10046; G11B20/10203; G11B11/00; G11B11/10; G11B11/105; G11B11/10502; G11B11/10515; G11B11/10595; G11B11/10597; G11B20/14; G11B20/1403; G11B20/1407; G11B20/1419; G11B7/00; G11B7/004; G11B7/005; G11B2220/00; G11B2220/20; G11B2220/25; G11B2220/2537
Claims Analysis
Total Claims: 79
Claim 1
Independent Claim
126 words
A method of reproducing data encoded on a track which has first and second recording areas therealong, said encoded data being recorded only on said second recording area by a data recording means, said method comprising: detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; extracting a read data signal from said output signal; clamping said read data signal at a reference level when said laser spot scans on said first recording area to produce a corrected data signal; and processing said corrected data signal in accordance with a threshold level and obtaining a data pulse indicative of said
Claim 2
Independent Claim
126 words
A method of reproducing data encoded on a track which has first and second recording areas therealong, said encoded data being recorded only on said second recording area by a data recording means, said method comprising: detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; extracting a read data signal from said output signal; clamping said read data signal at a reference level when said laser spot scans on said first recording area to produce a corrected data signal; and processing said corrected data signal in accordance with a threshold level and obtaining a data pulse indicative of said
Claim 3
Dependent Claim
55 words
The method as set forth in claim 1, wherein said track has pre-pits which are formed at predetermined intervals, and wherein said clamping step is controlled by a clamp pulse signal which is derived from a pit pulse signal corresponding to said pre-pits which indicates when said laser spot scans on said first recording area.
Claim 4
Dependent Claim
57 words
The method as set forth in claim 2, wherein said extracting step includes a step of obtaining as said read data a signal indicative of variations in polarization of said reflected light and a step of obtaining a signal indicative of variations in intensity of said reflected light as a read pit signal corresponding to said pre-pits.
Claim 5
Dependent Claim
68 words
The method as set forth in claim 2, wherein said extracting step includes a step of obtaining as said read data signal a differential signal between respective outputs of a plurality of photodetectors which receive P and S polarization components of said reflected light and a step of obtaining a sum signal between said respective outputs of the photodetectors as a read pit signal corresponding to said pre-pits.
Claim 6
Dependent Claim
59 words
The method as set forth in claim 2, wherein said extracting step includes a step of obtaining as said read data signal a sum signal between respective outputs of a split-photodetector which receives said reflected light and a step of obtaining as a read pit signal a differential signal between said outputs of the split-photodetector corresponding to said pre-pits.
Claim 7
Dependent Claim
67 words
The method as set forth in claim 2, wherein said first recording area has at least one of said pre-pits, and wherein said extracting step includes a step of obtaining as said read signal a signal indicative of variations in polarization of said reflected light and obtaining a signal relative to variations in intensity of said reflected light as a read pit signal corresponding to said pre-pits.
Claim 8
Dependent Claim
23 words
The method as set forth in claim 2, wherein said pre-pits are formed on areas other than said first and second recording areas.
Claim 9
Dependent Claim
56 words
The method as set forth in claim 7, wherein said extracting step includes a step of obtaining as said read signal a signal relative to variations in polarization of said reflected light and a step of obtaining a signal indicative of variations in intensity of said reflected light as a read pit signal corresponding said pre-pits.
Claim 10
Dependent Claim
42 words
The method as set forth in claim 1, further including a step of equalizing said read data signal so that an inclination of rise of said read data signal is the same as an inclination of fall of said read data signal.
Claim 11
Dependent Claim
42 words
The method as set forth in claim 9, wherein said equalizing step includes a step of changing equalization characteristics in accordance with at least one of a recording position of said encoded data and a linear velocity of said read data signal.
Claim 12
Dependent Claim
43 words
The method as set forth in claim 1, wherein said processing step includes a step of setting said threshold level in accordance with a level of said read data signal obtained by sampling when said laser spot scans on said first recording area.
Claim 13
Dependent Claim
26 words
The method as set forth in claim 1, wherein said processing step includes a step of setting said threshold level in accordance with said reference level.
Claim 14
Dependent Claim
44 words
The method as set forth in claim 1, wherein said processing step includes a step of setting said threshold level in accordance with a level of said corrected data signal obtained by peak detection when said laser spot scans on said second recording area.
Claim 15
Independent Claim
124 words
An apparatus for reproducing data encoded on a track which has first and second recording areas therealong, said encoded data being recorded only on said second area by a data recording means, said apparatus comprising: detecting means for detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; extracting means for extracting a read data signal from said output signal; clamping means for clamping a level of said read data signal at a reference level when said laser spot scans on said first recording area to produce a corrected data signal; and processing means for processing said corrected data signal in accordance with a threshold level and obtaining a data pulse indicative of said encoded data.
Claim 16
Independent Claim
124 words
An apparatus for reproducing data encoded on a track which has first and second recording areas therealong, said encoded data being recorded only on said second area by a data recording means, said apparatus comprising: detecting means for detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; extracting means for extracting a read data signal from said output signal; clamping means for clamping a level of said read data signal at a reference level when said laser spot scans on said first recording area to produce a corrected data signal; and processing means for processing said corrected data signal in accordance with a threshold level and obtaining a data pulse indicative of said encoded data.
Claim 17
Dependent Claim
31 words
The apparatus as set forth in claim 14, wherein said detecting means includes: optical means for scanning said track with said laser spot; and photodetector means for detecting said reflected light.
Claim 18
Dependent Claim
19 words
The apparatus as set forth in claim 15, wherein said track has pre-pits which are formed at predetermined intervals.
Claim 19
Dependent Claim
56 words
The apparatus as set forth in claim 16, further comprising clamp signal generator means for generating a clamp pulse signal for controlling said clamping means, wherein said clamp pulse signal indicates when said laser spot scans on said first recording area, said clamp pulse signal being derived from a pit pulse signal corresponding to said pre-pits.
Claim 20
Dependent Claim
53 words
The apparatus as set forth in claim 17, wherein said extracting means includes: means for obtaining as said read data signal a signal indicative of variations in polarization of said reflected light; and means for obtaining a read pit signal indicative of variations in intensity of said reflected light corresponding to said pre-pits.
Claim 21
Dependent Claim
66 words
The apparatus as set forth in claim 17, wherein said extracting means includes: means for obtaining as said read data signal a differential signal between respective outputs of said photodetector means which receive P and S polarization components of said reflected light; and means for obtaining a sum signal between said respective outputs of said photodetector means as a read pit signal corresponding to said pre-pits.
Claim 22
Dependent Claim
71 words
The apparatus as set forth in claim 17, wherein said photodetector means includes a split type photodetector which receives said reflected light, wherein said extracting means includes means for obtaining as said read data signal a sum signal between respective outputs of said split type photodetector and means for obtaining a differential signal between said respective outputs of said split type photodetector as a read pit signal corresponding to said pre-pits.
Claim 23
Dependent Claim
69 words
The apparatus as set forth in claim 17, wherein said first recording area has at least one of said pre-pits, and wherein said extracting means includes means for obtaining as said read data signal a signal indicative of variations in polarization of said reflected light and means for obtaining a signal indicative of variations in intensity of said reflected light as a read pit signal corresponding to said pre-pits.
Claim 24
Dependent Claim
23 words
The apparatus as set forth in claim 17, wherein said pre-pits are formed on areas other than said first and second recording areas.
Claim 25
Dependent Claim
56 words
The apparatus as set forth in claim 22, wherein said extracting means includes means for obtaining as said read data signal a signal indicative of variations in polarization of said reflected light and means for obtaining a signal indicative of variations in intensity of said reflected light as a read pit signal corresponding to said pre-pits.
Claim 26
Dependent Claim
41 words
The apparatus as set forth in claim 14, further including equalizing means for equalizing said read data signal so that an inclination of rise of said read data signal is equal to an inclination of fall of said read data signal.
Claim 27
Dependent Claim
38 words
The apparatus as set forth in claim 24, wherein said equalizing means changes equalization characteristics in accordance with at least one of a recording position of said encoded data and a linear velocity of said read data signal.
Claim 28
Dependent Claim
43 words
The apparatus as set forth in claim 14, wherein said process means includes threshold means for setting said threshold level in accordance with a level of said read data signal obtained by sampling when said laser spot scans on said first recording area.
Claim 29
Dependent Claim
26 words
The apparatus as set forth in claim 14, wherein said processing means includes threshold means for setting said threshold level in accordance with said reference level.
Claim 30
Dependent Claim
43 words
The apparatus as set forth in claim 14, wherein said processing means includes threshold means for setting said threshold level in accordance with a level of said corrected data signal obtained by peak detection when said laser spot scans on said second area.
Claim 31
Independent Claim
128 words
A method of reproducing data encoded on a track which has a clamp area and a recording area therealong, said encoded data being recorded on said recording area by a data recording means, and said encoded data are not recorded on said clamp area, said method comprising: detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; extracting a read data signal from said output signal indicative of said reflected light; holding a level of said read data signal at a reference level when said laser spot scans on said clamp area to produce a corrected data signal; and digitizing said corrected data signal in accordance with a threshold level and obtaining a data pulse indicative of said encoded data.
Claim 32
Independent Claim
128 words
A method of reproducing data encoded on a track which has a clamp area and a recording area therealong, said encoded data being recorded on said recording area by a data recording means, and said encoded data are not recorded on said clamp area, said method comprising: detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; extracting a read data signal from said output signal indicative of said reflected light; holding a level of said read data signal at a reference level when said laser spot scans on said clamp area to produce a corrected data signal; and digitizing said corrected data signal in accordance with a threshold level and obtaining a data pulse indicative of said encoded data.
Claim 33
Dependent Claim
55 words
The method as set forth in claim 29, wherein said track has pre-pits which are formed at predetermined intervals, and wherein said holding step is controlled by a clamp pulse signal which is derived from a pit pulse signal corresponding to said pre-pits and which indicates when said laser spot scans on said clamp area.
Claim 34
Dependent Claim
51 words
The method as set forth in claim 30, wherein said pre-pits are formed as phase pits at a depth substantially equal to 1/4 of the wavelength of said laser spot, and wherein said encoded data is recorded as magnetic domains having a different direction of magnetization from that of said track.
Claim 35
Dependent Claim
58 words
The method as st forth in claim 31, wherein said extracting step includes a step of obtaining as said read data signal a signal indicative of variations in polarization of said reflected light and a step of obtaining a signal indicative of variations in intensity of said reflected light as a read pit signal corresponding to said pre-pits.
Claim 36
Dependent Claim
66 words
The method as set forth in claim 31, wherein said extracting step includes a step of obtaining as said read data signal a differential signal between respective outputs of a plurality of photodetectors which receive P and S polarization components of said reflected light and obtaining a sum signal between said respective outputs of said plurality photodetectors as a read pit signal corresponding to said pre-pits.
Claim 37
Dependent Claim
44 words
The method as set forth in claim 30, wherein said pre-pits are formed as phase pits at a depth substantially equal to 1/2 of the wavelength of said laser spot, and wherein said encoded data is recorded as density pits formed by ablative recording.
Claim 38
Dependent Claim
61 words
The method as set forth in claim 34, wherein said extracting step includes a step of obtaining as said read data signal a sum signal between respective outputs of a split-photodetector which receives said reflected light and a step of obtaining a differential signal between said respective outputs of the split -photodetector as a read pit signal corresponding to said pre-pits.
Claim 39
Dependent Claim
19 words
The method as set forth in claim 31, wherein said clamp area has at least one of said pre-pits.
Claim 40
Dependent Claim
22 words
The method as set forth in claim 31, wherein said pre-pits are formed on areas other than said clamp and recording areas.
Claim 41
Dependent Claim
19 words
The method as set forth in claim 34, wherein said clamp area has at least one of said pre-pits.
Claim 42
Dependent Claim
22 words
The method as set forth in claim 34, wherein said pre-pits are formed on areas other than said clamp and recording areas.
Claim 43
Dependent Claim
58 words
The method as set forth in claim 30, wherein said extracting step includes a step of obtaining as said read data signal a signal indicative of variations in polarization of said reflected light and a step of obtaining a signal indicative of variations in intensity of said reflected light as a read pit signal corresponding to said pre-pits.
Claim 44
Dependent Claim
29 words
The method as set forth in claim 29, further including a step of equalizing said read data signal in order to improve waveform asymmetry of said read data signal.
Claim 45
Dependent Claim
42 words
The method as set forth in claim 41, wherein said equalizing step includes a step of changing equalization characteristics in accordance with at least one of a recording position of said encoded data and a linear velocity of said read data signal.
Claim 46
Dependent Claim
42 words
The method as set forth in claim 29, wherein said digitizing step includes a step of setting said threshold level in accordance with a level of said read data signal obtained by sampling when said laser spot scans on said clamp area.
Claim 47
Dependent Claim
26 words
The method as set forth in claim 29, wherein said digitizing step includes a step of setting said threshold level in accordance with said reference level.
Claim 48
Dependent Claim
43 words
The method as set forth in claim 29, wherein said digitizing step includes a step of setting said threshold level in accordance with a level of said corrected data signal obtained by peak detection when said laser spot scans on said recording area.
Claim 49
Independent Claim
147 words
A method of reproducing data encoded on a track which has a servo area and a recording area therealong, wherein said encoded data is recorded by data recording means only on said recording area, and at least one pre-pit is formed on said servo area, said method comprising: detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; extracting a read data signal from said output signal; deriving a clamp pulse signal from a pit pulse signal corresponding to said pre-pit, said clamp pulse signal indicating when said laser spot scans on said servo area; clamping said read data signal to a reference level in accordance with said clamp pulse signal to produce a corrected data signal; and digitizing said corrected data signal in accordance with a threshold level and obtaining a data pulse indicative of said encoded data.
Claim 50
Independent Claim
147 words
A method of reproducing data encoded on a track which has a servo area and a recording area therealong, wherein said encoded data is recorded by data recording means only on said recording area, and at least one pre-pit is formed on said servo area, said method comprising: detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; extracting a read data signal from said output signal; deriving a clamp pulse signal from a pit pulse signal corresponding to said pre-pit, said clamp pulse signal indicating when said laser spot scans on said servo area; clamping said read data signal to a reference level in accordance with said clamp pulse signal to produce a corrected data signal; and digitizing said corrected data signal in accordance with a threshold level and obtaining a data pulse indicative of said encoded data.
Claim 51
Dependent Claim
52 words
The method as set forth in claim 46, wherein said pre-pit is formed as a phase pit at a depth substantially equal to 1/2 of the wavelength of said laser spot, and wherein said encoded data are recorded as magnetic domains having a different direction of magnetization from that of said track.
Claim 52
Dependent Claim
58 words
The method as set forth in claim 47, wherein said extracting step includes a step of obtaining as said read data signal a signal indicative of variations in polarization of said reflected light and a step of obtaining a signal indicative of variations in intensity of said reflected light as a read pit signal corresponding to said pre-pit.
Claim 53
Dependent Claim
45 words
The method as set forth in claim 46, wherein said pre-pit is formed as a phase pits at a depth substantially equal to 1/2 of the wavelength of said laser spot, and wherein said encoded data is recorded as density pits formed by ablative recording.
Claim 54
Dependent Claim
59 words
The method as set forth in claim 49, wherein said extracting step includes a step of obtaining as said read data signal a sum signal between respective outputs of a split-photodetector which receives said reflected light and a step of obtaining a differential signal between said respective outputs of the split-photodetector as a read pit signal to said pre-pit.
Claim 55
Dependent Claim
29 words
The method as set forth in claim 46, further including a step of equalizing said read data signal in order to improve waveform asymmetry of said read data signal.
Claim 56
Dependent Claim
42 words
The method as set forth in claim 51, wherein said equalizing step includes a step of changing equalization characteristics in accordance with at least one of a recording position of said encoded data and a linear velocity of said read data signal.
Claim 57
Independent Claim
150 words
A method of reproducing data encoded on a track which has a servo area, a clamp area and a recording area therealong, wherein said encoded data is recorded by data recording means only on said recording area, and at least one pre-pit is formed on said servo area, said method comprising: detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; extracting a read data signal from said output signal; deriving a clamp pulse signal from a pit pulse signal corresponding to said pre-pit, said clamp pulse signal indicating when said laser spot scans on said clamp area; clamping said read data signal to a reference level in accordance with said clamp pulse signal to produce a corrected data signal; and digitizing said corrected data signal in accordance with a threshold level and obtaining a data pulse indicative of said encoded data.
Claim 58
Independent Claim
150 words
A method of reproducing data encoded on a track which has a servo area, a clamp area and a recording area therealong, wherein said encoded data is recorded by data recording means only on said recording area, and at least one pre-pit is formed on said servo area, said method comprising: detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; extracting a read data signal from said output signal; deriving a clamp pulse signal from a pit pulse signal corresponding to said pre-pit, said clamp pulse signal indicating when said laser spot scans on said clamp area; clamping said read data signal to a reference level in accordance with said clamp pulse signal to produce a corrected data signal; and digitizing said corrected data signal in accordance with a threshold level and obtaining a data pulse indicative of said encoded data.
Claim 59
Dependent Claim
50 words
The method as set forth in claim 53, wherein said pre-pit is formed as a phase pit at a depth substantially equal to 1/2 of the wavelength of said laser spot, and wherein said encoded data is recorded as magnetic domains having a different direction of magnetization from said track.
Claim 60
Dependent Claim
57 words
The method as set forth in claim 54, wherein said extracting step includes a step of obtaining as said read data signal a signal indicative of variations in polarization of said reflected light and a step of obtaining a signal indicative of variations in intensity of said reflected light as a read pit signal corresponding said pre-pit.
Claim 61
Dependent Claim
45 words
The method as set forth in claim 55, wherein said pre-pit is formed as a phase pit at a depth substantially equal to 1/2 of the wavelength of said laser spot, and wherein said encoded data is recorded as density pits formed by ablative recording.
Claim 62
Dependent Claim
56 words
The method as set forth in claim 56, wherein said extracting step includes a step of obtaining as said read data signal a sum signal between respective outputs of a split-photodetector which receives said reflected light and a differential signal between said respective outputs of the split-photodetector as a read pit signal corresponding to said pre-pit.
Claim 63
Dependent Claim
29 words
The method as set forth in claim 53, further including a step of equalizing said read data signal in order to improve waveform asymmetry of said read data signal.
Claim 64
Dependent Claim
43 words
The method as set forth in claim 58, wherein said equalizing step further includes a step of changing equalization characteristics in accordance with at least one of a recording position of said encoded data and a linear velocity of said read data signal.
Claim 65
Independent Claim
128 words
An apparatus for reproducing data encoded on a track which has first and second recording areas therealong, wherein said encoded data is recorded only on said second area by data recording means, said apparatus comprising: an optical head for detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; a circuit for obtaining a read data signal from said output signal; a level clamp circuit for clamping a level of said read data signal to a reference level when said laser spot scans on said first recording area to produce a corrected data signal; and a digitization circuit for processing said corrected data signal in accordance with a threshold level and obtaining a data pulse indicative of said encoded data.
Claim 66
Independent Claim
128 words
An apparatus for reproducing data encoded on a track which has first and second recording areas therealong, wherein said encoded data is recorded only on said second area by data recording means, said apparatus comprising: an optical head for detecting reflected light as a laser spot scans along said track and producing an output signal indicative thereof; a circuit for obtaining a read data signal from said output signal; a level clamp circuit for clamping a level of said read data signal to a reference level when said laser spot scans on said first recording area to produce a corrected data signal; and a digitization circuit for processing said corrected data signal in accordance with a threshold level and obtaining a data pulse indicative of said encoded data.
Claim 67
Dependent Claim
31 words
The apparatus as set forth in claim 60, wherein said optical head includes: optical means for scanning said track with said laser spot; and photodetector means for receiving said reflected light.
Claim 68
Dependent Claim
19 words
The apparatus as set forth in claim 61, wherein said track has pre-pits which are formed at predetermined intervals.
Claim 69
Dependent Claim
57 words
The apparatus as set forth in claim 62, further comprising a clamp signal generator for generating a clamp pulse signal for controlling said level clamp circuit, wherein said clamp pulse signal indicates when said laser spot scans on said first recording area, said clamp pulse signal being derived from a pit pulse signal corresponding to said pre-pits.
Claim 70
Dependent Claim
59 words
The apparatus as set forth in claim 63, wherein said circuit includes: a first amplifier for obtaining as said read data signal a signal indicative of variations in polarization of said reflected light; and a second amplifier for obtaining a signal indicative of variations in intensity of said reflected light as a read pit signal corresponding to said pre-pits.
Claim 71
Dependent Claim
69 words
The apparatus as set forth in claim 63, wherein said circuit includes: a first amplifier for obtaining as said read data signal a differential signal between respective outputs of said photodetector means which receives P and S polarization components of said reflected light; and a second amplifier for obtaining a sum signal between said respective outputs of said photodetector means as a read pit signal relative to said pre-pits.
Claim 72
Dependent Claim
76 words
The apparatus as set forth in claim 63, wherein said first recording area is a servo area having at least one of said pre-pits, and wherein said circuit includes a first amplifier for obtaining as said read data signal a signal indicative of variations in polarization of said reflected light and a second amplifier for obtaining a signal indicative of variations in intensity of said reflected light as a read pit signal corresponding to said pre-pits.
Claim 73
Dependent Claim
35 words
The apparatus as set forth in claim 63, wherein said pre-pits are formed on areas other than said first and second recording areas, and wherein said encoded data is not recorded on said other areas.
Claim 74
Dependent Claim
59 words
The apparatus as set forth in claim 67, wherein said circuit includes a first amplifier for obtaining as said read data signal a signal indicative of variations in polarization of said reflected light and a second amplifier for obtaining a signal indicative of variations in intensity of said reflected light as a read pit signal corresponding to said pre-pits.
Claim 75
Dependent Claim
42 words
The apparatus as set forth in claim 60, further including an equalizer for equalizing said read data signal so that an inclination of rise of said read data signal is the same as an inclination of fall of said read data signal.
Claim 76
Dependent Claim
37 words
The apparatus as set forth in claim 69, wherein said equalizer changes equalization characteristics in accordance with at least one of a recording position of said encoded data and a linear velocity of said read data signal.
Claim 77
Dependent Claim
44 words
The apparatus as set forth in claim 60, wherein said digitization circuit includes a level shifter for setting said threshold level in accordance with a level of said read data signal obtained by sampling when said laser spot scans on said first recording area.
Claim 78
Dependent Claim
27 words
The apparatus as set forth in claim 60, wherein said digitization circuit includes a level shifter for setting said threshold level in accordance with said reference level.
Claim 79
Dependent Claim
46 words
The apparatus as set forth in claim 64, wherein said digitization circuit includes a level setting circuit for setting said threshold level in accordance with a level of said corrected data signal obtained by peak detection when said laser spot scans on said second recording area.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-01 | 1994-04-02 | 1994-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-01 | 1998-04-02 | 1998-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-01 | 2002-04-02 | 2002-10-02 | $7700.00 | Window Closed / Lapsed |