US5774623A
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US
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Video image and audio sound signal processor having signal multiplexer and single data compression system for digital video recording and playback apparatus
Assignee: Ricoh Co Ltd
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Filing: 1996-04-10
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Granted: 1998-06-30
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Expires: 2016-04-10
Abstract
Abstract A video image and audio sound signal processor having a signal multiplexer and a single data compression system for a video image recording and playback apparatus. An audio sound signal is sampled in accordance with a timing signal in synchronism with a horizontal synchronizing signal of a video image signal, and such a sampled audio sound signal is then multiplexed onto an end of the video image signal, which is then converted into a digital signal by a single A/D (analog to digital) converter. Such a multiplexed digital signal containing video image data and audio sound data is then sent to a data converter wherein raster data are converted into a plurality of data blocks, each of such data blocks including a plurality of picture elements in both horizontal and vertical directions. And then, the data blocks are sent to a single compression device.
Inventors
- 👤 Eiichi Maeda
- 👤 Norihiro Sakaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:25
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/79; H04N9/80; H04N9/804; H04N9/806; H04N9/8063; H04N5/00; H04N5/76; H04N5/765; H04N5/77; H04N5/772; H04N9/8042; H04N9/8047
Claims Analysis
Total Claims: 60
Claim 1
Independent Claim
163 words
A video image and studio sound signal processor, comprising: a sample-and-hold circuit for sampling an analog audio sound signal in synchronism with a horizontal synchronizing signal of an analog video image signal, and for holding such a sampled analog audio sound signal to output a held analog audio sound signal; a signal multiplexer for multiplexing said analog video image signal and said held analog audio sound signal output by said sample-and-hold circuit; a timing pulse generator for generating a timing pulse for controlling said signal multiplexer; a first converter for converting an analog multiplexed signal including said analog video image signal and said analog audio sound signal output from said signal multiplexer into a digital signal; a second converter for converting an output from said first converter into a plurality of data blocks; and a data compressor for compressing video image data and audio sound data, which are converted into compressed data blocks by said second converter, in a unit of a block.
Claim 2
Dependent Claim
163 words
A video image and studio sound signal processor, comprising: a sample-and-hold circuit for sampling an analog audio sound signal in synchronism with a horizontal synchronizing signal of an analog video image signal, and for holding such a sampled analog audio sound signal to output a held analog audio sound signal; a signal multiplexer for multiplexing said analog video image signal and said held analog audio sound signal output by said sample-and-hold circuit; a timing pulse generator for generating a timing pulse for controlling said signal multiplexer; a first converter for converting an analog multiplexed signal including said analog video image signal and said analog audio sound signal output from said signal multiplexer into a digital signal; a second converter for converting an output from said first converter into a plurality of data blocks; and a data compressor for compressing video image data and audio sound data, which are converted into compressed data blocks by said second converter, in a unit of a block.
Claim 3
Dependent Claim
128 words
A video image and audio sound signal processor according to claim 1, further comprising: a data decompressor for decompressing the compressed block data in a unit of a block; a third converter for converting said block data, which are decompressed by said data decompressor, into raster data; a fourth converter for converting an output from said third converter into an analog signal; a signal demultiplexer for separating an output from said fourth converter into a video image signal and an audio sound signal; an inverse sample-and-hold circuit for forming an audio sound signal from said audio sound signal output from said signal demultiplexer in synchronism with a horizontal synchronizing signal of said video image signal; and a low-pass filter for filtering an output from said inverse sample-and-hold circuit.
Claim 4
Dependent Claim
52 words
A video image and audio sound signal processor according to claim 1, wherein output data blocks from said second converter include a plurality of audio sound blocks so as to conform to a block interleave format comprised of a plurality of brightness data blocks and a plurality of color difference data blocks.
Claim 5
Dependent Claim
72 words
A video image and audio sound signal processor according to claim 1, further comprising a delay circuit for delaying an output from said sample-and-hold circuit, in accordance with an output signal from said timing pulse generator, and wherein said signal multiplexer multiplexes an output from said delay circuit, an output of said video image signal, and an output from said sample-and-hold circuit, thereby increasing a sampling frequency of the audio sound signal.
Claim 6
Dependent Claim
72 words
A video image and audio sound signal processor according to claim 3, further comprising a delay circuit for delaying an output from said sample-and-hold circuit, in accordance with an output signal from said timing pulse generator, and wherein said signal multiplexer multiplexes an output from said delay circuit, an output of said video image signal, and an output from said sample-and-hold circuit, thereby increasing a sampling frequency of the audio sound signal.
Claim 7
Dependent Claim
64 words
A video image and audio sound signal processor according to claim 1, further comprising: a plurality of quantization table memories, each quantization table memorizing a predetermined quantization table, and one of said quantization table memories memorizing a predetermined quantization table for quantizing audio sound data exclusively; and a selector for selecting a single quantization table memory from among the plurality of quantization table memories.
Claim 8
Dependent Claim
64 words
A video image and audio sound signal processor according to claim 3, further comprising: a plurality of quantization table memories, each quantization table memorizing a predetermined quantization table, and one of said quantization table memories memorizing a predetermined quantization table for quantizing audio sound data exclusively; and a selector for selecting a single quantization table memory from among the plurality of quantization table memories.
Claim 9
Dependent Claim
64 words
A video image and audio sound signal processor according to claim 4, further comprising: a plurality of quantization table memories each quantization table memorizing a predetermined quantization table, and one of said quantization table memories memorizing a predetermined quantization table for quantizing audio sound data exclusively; and a selector for selecting a single quantization table memory from among the plurality of quantization table memories.
Claim 10
Dependent Claim
68 words
A video image and audio sound signal processor according to claim 1, further comprising: a plurality of quantization table memories, each quantization table memorizing a predetermined quantization table, and one of said quantization table memories memorizing a predetermined quantization table for quantizing both video image data and audio sound data; and a selector for selecting a single quantization table memory from among the plurality of quantization table memories.
Claim 11
Dependent Claim
68 words
A video image and audio sound signal processor according to claim 3, further comprising: a plurality of quantization table memories each quantization table memorizing a predetermined quantization table, and one of said quantization table memories memorizing a predetermined quantization table for quantizing both video image data and audio sound data; and a selector for selecting a single quantization table memory from among the plurality of quantization table memories.
Claim 12
Dependent Claim
69 words
A video image and audio sound signal processor according to claim 4, further comprising: a plurality of quantization table memories, each quantization table memorizing a predetermined quantization table, and one of said quantization table memories memorizing a predetermined quantization table for quantizing both video image data and audio sound data; and a selector for selecting a single quantization table memory from among the plurality of said quantization table memories.
Claim 13
Dependent Claim
96 words
A video image and audio sound signal processor according to claim 1, wherein said signal multiplexer multiplexes a video image signal from a CCD (charge coupled device) and an audio sound signal, said video image and audio sound signal processor further comprising: a delay circuit for delaying said audio sound signal; a digital signal processing circuit for separating an output from said CCD (charge coupled device) into a brightness signal and a plurality of color difference signals; and a second multiplexer for multiplexing said audio sound data and an output from said digital signal processing circuit.
Claim 14
Dependent Claim
96 words
A video image and audio sound signal processor according to claim 3, wherein said signal multiplexer multiplexes a video image signal from a CCD (charge coupled device) and an audio sound signal, said video image and audio sound signal processor further comprising: a delay circuit for delaying said audio sound signal; a digital signal processing circuit for separating an output from said CCD (charge coupled device) into a brightness signal and a plurality of color difference signals; and a second multiplexer for multiplexing said audio sound data and an output from said digital signal processing circuit.
Claim 15
Dependent Claim
96 words
A video image and audio sound signal processor according to claim 4, wherein said signal multiplexer multiplexes a video image signal from a CCD (charge coupled device) and an audio sound signal, said video image and audio sound signal processor further comprising: a delay circuit for delaying said audio sound signal; a digital signal processing circuit for separating an output from said CCD (charge coupled device) into a brightness signal and a plurality of color difference signals; and a second multiplexer for multiplexing said audio sound data and an output from said digital signal processing circuit.
Claim 16
Dependent Claim
96 words
A video image and audio sound signal processor according to claim 6, wherein said signal multiplexer multiplexes a video image signal from a CCD (charge coupled device) and an audio sound signal, said video image and audio sound signal processor further comprising: a delay circuit for delaying said audio sound signal; a digital signal processing circuit for separating an output from said CCD (charge coupled device) into a brightness signal and a plurality of color difference signals; and a second multiplexer for multiplexing said audio sound data and an output from said digital signal processing circuit.
Claim 17
Dependent Claim
96 words
A video image and audio sound signal processor according to claim 9, wherein said signal multiplexer multiplexes a video image signal from a CCD (charge coupled device) and an audio sound signal, said video image and audio sound signal processor further comprising: a delay circuit for delaying said audio sound signal; a digital signal processing circuit for separating an output from said CCD (charge coupled device) into a brightness signal and a plurality of color difference signals; and a second multiplexer for multiplexing said audio sound data and an output from said digital signal processing circuit.
Claim 18
Dependent Claim
61 words
A video image and audio sound signal processor according to claim 1, further comprising: a memory for memorizing said video image data and audio sound data; and a memory control circuit for controlling addressing for memorizing said audio sound data in a first area in said memory and for memorizing said video image data in a second area in said memory.
Claim 19
Dependent Claim
61 words
A video image and audio sound signal processor according to claim 3, further comprising: a memory for memorizing said video image data and audio sound data; and a memory control circuit for controlling addressing for memorizing said audio sound data in a first area in said memory and for memorizing said video image data in a second area in said memory.
Claim 20
Dependent Claim
59 words
A video image and audio sound signal processor according to claim 4, further comprising: a memory for memorizing said video image data and audio sound data; and a memory control circuit for controlling addressing for memorizing said audio sound data in a first area in said memory and for memorizing said video image data in a second area memory.
Claim 21
Dependent Claim
61 words
A video image and audio sound signal processor according to claim 6, further comprising: a memory for memorizing said video image data and audio sound data; and a memory control circuit for controlling addressing for memorizing said audio sound data in a first area in said memory and for memorizing said video image data in a second area in said memory.
Claim 22
Dependent Claim
61 words
A video image and audio sound signal processor According to claim 9, further comprising: a memory for memorizing said video image data and audio sound data; and a memory control circuit for controlling addressing for memorizing said audio sound data in a first area in said memory and for memorizing said video image data in a second area in said memory.
Claim 23
Dependent Claim
61 words
A video image and audio sound signal processor according to claim 13, further comprising: a memory for memorizing said video image data and audio sound data; and a memory control circuit for controlling addressing for memorizing said audio sound data in a first area in said memory and for memorizing said video image data in a second area in said memory.
Claim 24
Dependent Claim
50 words
A video image and audio sound signal processor according to claim 1, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that an analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
Claim 25
Dependent Claim
50 words
A video image and audio sound signal processor according to claim 3, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that the analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
Claim 26
Dependent Claim
50 words
A video image and audio sound signal processor according to claim 4, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that the analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
Claim 27
Dependent Claim
50 words
A video image and audio sound signal processor according to claim 6, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that the analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
Claim 28
Dependent Claim
50 words
A video image and audio sound signal processor according to claim 9, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that the analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
Claim 29
Dependent Claim
50 words
A video image and audio sound signal processor according to claim 13, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that the analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
Claim 30
Dependent Claim
50 words
A video image and audio sound signal processor according to claim 18, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that the analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
Claim 31
Dependent Claim
171 words
A digital video recording and playback apparatus, including a video image and audio sound signal processor, comprising: a sample-and-hold circuit for sampling an analog audio sound signal in synchronism with a horizontal synchronizing signal of an analog video image signal, and for holding such a sampled analog audio sound signal to output a held analog audio sound signal; a signal multiplexer for multiplexing said analog video image signal and said held analog audio sound signal output by said sample-and-hold circuit; a timing pulse generator for generating a timing pulse for controlling said signal multiplexer; a first converter for converting an analog multiplexed signal including said analog video image signal and said analog audio sound signal output from said signal multiplexer into a digital signal; a second converter for converting an output from said first converter into a plurality of data blocks; and a data compressor for compressing video image data and audio sound data, which are converted into compressed data blocks by said second converter, in a unit of a block.
Claim 32
Dependent Claim
171 words
A digital video recording and playback apparatus, including a video image and audio sound signal processor, comprising: a sample-and-hold circuit for sampling an analog audio sound signal in synchronism with a horizontal synchronizing signal of an analog video image signal, and for holding such a sampled analog audio sound signal to output a held analog audio sound signal; a signal multiplexer for multiplexing said analog video image signal and said held analog audio sound signal output by said sample-and-hold circuit; a timing pulse generator for generating a timing pulse for controlling said signal multiplexer; a first converter for converting an analog multiplexed signal including said analog video image signal and said analog audio sound signal output from said signal multiplexer into a digital signal; a second converter for converting an output from said first converter into a plurality of data blocks; and a data compressor for compressing video image data and audio sound data, which are converted into compressed data blocks by said second converter, in a unit of a block.
Claim 33
Dependent Claim
136 words
A digital video recording and playback apparatus according to claim 30, wherein said video image and audio sound signal processor further comprises: a data decompressor for decompressing the compressed block data in a unit of a block; a third converter for converting said block data, which are decompressed by said data decompressor, into raster data; a fourth converter for converting an output from said third converter into an analog signal; a signal demultiplexer for separating an output from said fourth converter into a video image signal and an audio sound signal; an inverse sample-and-hold circuit for forming an audio sound signal from said audio sound signal output from said signal demultiplexer in synchronism with a horizontal synchronizing signal of said video image signal; and a low-pass filter for filtering an output from said inverse sample-and-hold circuit.
Claim 34
Dependent Claim
50 words
A digital video recording and playback apparatus according to claim 30, wherein an output from said second converter includes a plurality of audio sound blocks so as to conform to a block interleave format comprised of a plurality of brightness data blocks and a plurality of color difference data blocks.
Claim 35
Dependent Claim
79 words
A digital video recording and playback apparatus according to claim 30, wherein said video image and audio sound signal processor further comprises a delay circuit for delaying an output from said sample-and-hold circuit, in accordance with an output signal from said timing pulse generator, and wherein said signal multiplexer multiplexes an output from said delay circuit output of said video image signal, and an output from said sample-and-hold circuit, thereby increasing a sampling frequency of an audio sound signal.
Claim 36
Dependent Claim
79 words
A digital video recording and playback apparatus according to claim 32, wherein said video image and audio sound signal processor further comprises a delay circuit for delaying an output from said sample-and-hold circuit, in accordance with an output signal from said timing pulse generator, and wherein said signal multiplexer multiplexes output from said delay circuit, an output of said video image signal, and an output from said sample-and-hold circuit, thereby increasing a sampling frequency of an audio sound signal.
Claim 37
Dependent Claim
71 words
A digital video recording and playback apparatus according to claim 30, said video image and audio sound processor further comprising: a plurality of quantization table memories, each quantization table for memorizing a predetermined quantization table and one of said quantization table memories memorizing a predetermined quantization table for quantizing audio sound data exclusively; and a selector for selecting a single quantization table memory among from the plurality of quantization table memories.
Claim 38
Dependent Claim
70 words
A digital video recording and playback apparatus according to claim 32, said video image and audio sound processor further comprising: a plurality of quantization table memories, each quantization table memorizing a predetermined quantization table and one of said quantization table memories memorizing a predetermined quantization table for quantizing audio sound data exclusively; and a selector for selecting a single quantization table memory from among the plurality of quantization table memories.
Claim 39
Dependent Claim
70 words
A digital video recording and playback apparatus according to claim 33, said video image and audio sound processor further comprising: a plurality of quantization table memories, each quantization table memorizing a predetermined quantization table and one of said quantization table memories memorizing a predetermined quantization table for quantizing audio sound data exclusively; and a selector for selecting a single quantization table memory from among the plurality of quantization table memories.
Claim 40
Dependent Claim
74 words
A digital video recording and playback apparatus according to claim 30, said video image and audio sound processor further comprising: a plurality of quantization table memories, each quantization table memorizing a predetermined quantization table and one of said quantization table memories memorizing a predetermined quantization table for quantizing both video image data and audio sound data; and a selector for selecting a single quantization table memory from among the plurality of quantization table memories.
Claim 41
Dependent Claim
74 words
A digital video recording and playback apparatus according to claim 32, said video image and audio sound processor further comprising: a plurality of quantization table memories, each quantization table memorizing a predetermined quantization table and one of said quantization table memories memorizing a predetermined quantization table for quantizing both video image data and audio sound data; and a selector for selecting a single quantization table memory from among the plurality of quantization table memories.
Claim 42
Dependent Claim
74 words
A digital video recording and playback apparatus according to claim 33, said video image and audio sound processor further comprising: a plurality of quantization table memories, each quantization table memorizing a predetermined quantization table and one of said quantization table memories memorizing a predetermined quantization table for quantizing both video image data and audio sound data; and a selector for selecting a single quantization table memory from among the plurality of quantization table memories.
Claim 43
Dependent Claim
95 words
A digital video recording and playback apparatus according to claim 30, wherein said signal multiplexer multiplexes a video image signal from a CCD (charge coupled device) and an audio sound signal, said video image and audio sound signal processor further comprising: a delay circuit for delaying said audio sound signal; a digital signal processing circuit for separating an output from said CCD (charge coupled device) into a brightness signal and a plurality of color difference signals; and a second multiplexer for multiplexing said audio sound data and an output from said digital signal processing circuit.
Claim 44
Dependent Claim
94 words
A digital video recording and playback apparatus according to claim 32, wherein said signal multiplexer multiplexes a video image signal from a CCD (charge coupled device) and an audio sound signal, said video image and audio sound signal processor further comprising: a delay circuit for delaying said audio sound signal; a digital signal processing circuit for separating an output from said CCD(charge coupled device) into a brightness signal and a plurality of color difference signals; and a second multiplexer for multiplexing said audio sound data and an output from said digital signal processing circuit.
Claim 45
Dependent Claim
95 words
A digital video recording and playback apparatus according to claim 33, wherein said signal multiplexer multiplexes a video image signal from a CCD (charge coupled device) and an audio sound signal, said video image and audio sound signal processor further comprising: a delay circuit for delaying said audio sound signal; a digital signal processing circuit for separating an output from said CCD (charge coupled device) into a brightness signal and a plurality of color difference signals; and a second multiplexer for multiplexing said audio sound data and an output from said digital signal processing circuit.
Claim 46
Dependent Claim
95 words
A digital video recording and playback apparatus according to claim 35, wherein said signal multiplexer multiplexes a video image signal from a CCD (charge coupled device) and an audio sound signal, said video image and audio sound signal processor further comprising: a delay circuit for delaying said audio sound signal; a digital signal processing circuit for separating an output from said CCD (charge coupled device) into a brightness signal and a plurality of color difference signals; and a second multiplexer for multiplexing said audio sound data and an output from said digital signal processing circuit.
Claim 47
Dependent Claim
95 words
A digital video recording and playback apparatus according to claim 38, wherein said signal multiplexer multiplexes a video image signal from a CCD (charge coupled device) and an audio sound signal, said video image and audio sound signal processor further comprising: a delay circuit for delaying said audio sound signal; a digital signal processing circuit for separating an output from said CCD (charge coupled device) into a brightness signal and a plurality of color difference signals; and a second multiplexer for multiplexing said audio sound data and an output from said digital signal processing circuit.
Claim 48
Dependent Claim
68 words
A digital video recording and playback apparatus according to claim 30, said video image and audio sound signal processor further comprising: a memory for memorizing said video image data and audio sound data; and a memory control circuit for controlling addressing for memorizing said audio sound data in a first area in said memory and for memorizing said video image data in a second area in said memory.
Claim 49
Dependent Claim
68 words
A digital video recording and playback apparatus according to claim 32, said video image and audio sound signal processor further comprising: a memory for memorizing said video image data and audio sound data; and a memory control circuit for controlling addressing for memorizing said audio sound data in a first area in said memory and for memorizing said video image data in a second area in said memory.
Claim 50
Dependent Claim
68 words
A digital video recording and playback apparatus according to claim 33, said video image and audio sound signal processor further comprising: a memory for memorizing said video image data and audio sound data; and a memory control circuit for controlling addressing for memorizing said audio sound data in a first area in said memory and for memorizing said video image data in a second area in said memory.
Claim 51
Dependent Claim
68 words
A digital video recording and playback apparatus according to claim 35, said video image and audio sound signal processor further comprising: a memory for memorizing said video image data and audio sound data; and a memory control circuit for controlling addressing for memorizing said audio sound data in a first area in said memory and for memorizing said video image data in a second area in said memory.
Claim 52
Dependent Claim
68 words
A digital video recording and playback apparatus according to claim 38, said video image and audio sound signal processor further comprising: a memory for memorizing said video image data and audio sound data; and a memory control circuit for controlling addressing for memorizing said audio sound data in a first area in said memory and for memorizing said video image data in a second area in said memory.
Claim 53
Dependent Claim
68 words
A digital video recording and playback apparatus according to claim 41, said video image and audio sound signal processor further comprising: a memory for memorizing said video image data and audio sound data; and a memory control circuit for controlling addressing for memorizing said audio sound data in a first area in said memory and for memorizing said video image data in a second area in said memory.
Claim 54
Dependent Claim
49 words
A digital video recording and playback apparatus according to claim 30, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that the analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
Claim 55
Dependent Claim
49 words
A digital video recording and playback apparatus according to claim 32, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that the analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
Claim 56
Dependent Claim
49 words
A digital video recording and playback apparatus according to claim 33, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that the analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
Claim 57
Dependent Claim
49 words
A digital video recording and playback apparatus according to claim 35, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that the analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
Claim 58
Dependent Claim
49 words
A digital video recording and playback apparatus according to claim 38, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that the analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
Claim 59
Dependent Claim
49 words
A digital video recording and playback apparatus according to claim 41, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that the analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
Claim 60
Dependent Claim
49 words
A digital video recording and playback apparatus according to claim 46, wherein said signal multiplexer multiplexes the analog video image signal and the analog audio sound signal so that the analog audio sound signal is inserted immediately following an end of the video image signal for a raster line.
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) | 2001-06-29 | 2001-12-29 | 2002-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-29 | 2005-12-29 | 2006-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-29 | 2009-12-29 | 2010-06-30 | $7700.00 | Window Closed / Lapsed |