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`PATENT
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`SERIAL NUMBER
`Oi::i/762:- o·::nJ
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`FILING DATE CLASS
`12/0"9/-:16
`~340
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`SUBCLASS
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`**CONTINUING DATA*********************
`VEHJF.IED
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`**FOREIGN/PCT APPLICATIQNS*****~=******
`\lERIFIEI)
`
`' i
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`\
`
`FCJHEI£~N FILING LICEh.!SE t~if~Ah!TED 0:2/11/97
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`Foreign priority claimed
`35 USC 119 condl1ions me1
`
`Verified
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`~ ~8'-BDX '3005
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`i<(J!CO!i10 IN 46'304
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`
`PAT. & TM-PT0-436L
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`Sheets Drwg.
`
`ISSUE
`BATCH
`NUMBER
`
`Print Fig.
`
`5
`
`Label
`Area
`
`WARNING: The information disclosed herein may be restricted. Una•lilfi<orizeld disclosure may be prohibited
`by the United States Code Title 35, Sections
`the U.S.
`Patent & Trademark Office iS restricted to aut!Jpri£'d
`
`(Rev. 8192)
`
`Fonn PT.0-413 ~·
`\_)
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`' \
`
`ISSUE FEE
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`1
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`U.S. PATENT APPLICATION
`
`SERIAL NUMBER
`
`FILING DATE
`
`CLASS
`
`GROUP ART UNIT
`
`08/762,090
`
`12/09/96
`
`342
`
`2201
`
`MICHAEL J SHORKEYON, NOBLESVILLE, IN; DAVID J J LEE, CLOVERVILLE, SC;
`THOMAS H SAVCHICKK, NOBLESVILLE, IN.
`
`>--z
`"'
`"' ~
`
`**CONTINUING DATA*********************
`VERIFIED
`
`**FOREIGN/PCT APPLICATIONS************
`VERIFIED
`
`FOREIGN FILING LICENSE GRANTED 02/11/97
`
`STATE OR
`COUNTRY
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`SHEETS
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`CLAIMS
`
`INDEPENDENT
`CLAIMS
`
`FILING FEE
`RECEIVED
`
`A TIORNEY DOCKET NO.
`
`IN
`
`3
`
`11
`
`1
`
`$770.00
`
`H-195076
`
`DELCO ELECTRONICS CORPORATION
`ERC BUILDING M S D 32
`PO BOX 9005
`KOKOMO IN 46904
`
`METHOD OF IMPRIVING ZONE OF COVERAGE RESPONSE OF AUTOMOTIVE RADAR
`
`'
`
`"'
`"'
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`5l
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`This is to certifd, that annexed hereto is a true co~y from the records of the United States
`Patent and Tra emark Office of the application w 1ch is identified above.
`By authority of the
`COMMISSIONER OF PATENTS AND TRADEMARKS
`
`.
`
`O.to
`
`Certifying Officer .
`
`2
`
`

`
`- - - - - .·----~r~ ~--
`
`~_. ;:1
`
`PATENT APPUCATION SERIAL NO.
`
`08/762090
`
`--~~~--------
`
`U.S; DEPARTMENT OF COMMERCE
`PATENT AND TRADEMARK OFFICE
`FEE RECORD SHEET
`
`PT0-1556
`(5/87)
`
`310 YC 04-0549 121}0/96 GB762090
`
`31011 101
`
`770.00CH H-195076
`
`,
`
`I
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`3
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`
`---- ----
`
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`. . ....,,
`'
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`
`UB/762090
`
`/ "
`
`H-195076
`
`DELCO ELECTRONICS CORPORATION
`ERC BUILDING - M.S. D-32
`P. 0. BOX 9005
`KOKOMO, IN 46904-9005
`J~;jj9tp
`
`Commissioner of Patents and Trademarks
`Box Patent Application
`Washington, D.C. 20231
`
`Sir:
`
`Enclosed for filing are the following patent application papers:
`
`Docket No.:
`
`H-195076
`
`Inventors:
`
`Mark Ford Henderson
`Michael John Shorkey
`David James Lee
`Thomas Hays Savchick
`
`Title:
`
`METHOD OF IMPORVING ZONE OF COVERAGE
`RESPONSE OF AUTOMOTIVE RADAR
`
`Filing Fee Formula
`
`Basic Fee ................................................................................. .
`Additional Fees:
`·Number of independent claims in excess
`of 3, times $80.00 .......................................... ..
`Number of claims in excess of 20,
`times $22.00 .................................................... .
`Multiple dependent claim, add $260.00 .......... ..
`Total Filing Fee ...................................................................... .
`
`$ 770.00
`
`$
`
`0.00
`
`0.00
`$
`0.00
`$
`$ 770.00
`
`The patent specification h-195076 entitled METHOD OF IMPROVING ZONE OF
`COVERAGE RESPONSE OF AUTOMOTIVE RADAR and filed in the Patent and
`Trademark Office herewith is the patent specification for which the inventor(s)
`executed the Declaration enclosed herewith.
`
`, PI"" ohocgo tho $770 00 filiog foe to Doloo Eloolrnol "''"'"];:Jr;;_
`
`MARY S. MOORE
`Reg. No. 37,245
`317/451-34867
`
`4
`
`

`
`91JM762o9o
`
`METHOD OF IMPROVING ZONE OF COVERAGE RESPONSE
`OF AUTOMOTIVE RADAR
`
`Field of the Invention
`This invention relates to the control of side
`detection automotive radar systems and particularly to a
`10 method of controlling an alarm or alert indicator to
`enhance the perceived coverage of a blind spot.
`
`Background of the Invention
`Vehicle mounted near object detection systems
`15 utilize various means for detecting and identifying
`targets of interest in their vicinity. The target
`information is useful in collision warning systems
`wherein the system notifies the vehicle operator that an
`object is positioned to present collision potential.
`20 While many forms of near object detection systems
`presently exist, generally those utilizing radar
`transceivers and related signal processing techniques do
`the best job of reliably detecting targets within range
`over variations in environment.
`Such near object detection systems use radar,
`preferably-microwave radar, to "illuminate" a target of
`interest by transmitting energy with certain signatory
`characteristics and then monitoring for similar return
`signals reflected from an object.· Microwave
`transmissions with approved power levels and spectra
`generally experience lower overall attenuation with
`weather and are less susceptible to "scattering" effects
`than are other transmission media utilized by systems of
`this type. Properties of the reflected signal are
`analyzed using established (proprietary) techniques to
`determine relevance to the interests of the driver of a
`vehicle equipped with such a system.
`Information derived
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`from the returned radar signals include target range and
`range rate. Using platform or host vehicle speed as a
`~ystem input and as a reference, target data.can be
`analyzed and the signal processor can make reasonable
`5 decisions whether to "report" the target or not.
`Accurate target discrimination capabilities are required
`of such systems to reduce "false alarms" which are an
`annoyance to the driver in collision warning system
`scenarios. The source of such false alarms can be
`clutter or radar reflections from roadside objects such
`as guard rails, walls or other stationary objects.
`Another source of annoyance is alert dropout
`(the signal light or audio turns off) occurring due to
`variable reflectivity of a target vehicle and its effect
`on the strength of the return radar signal. A vehicle
`wheel well, for example, may help create a weak return
`signal and subsequently an alert dropout. Dropouts are
`most common during station-keeping events where the host
`and target vehicle travel adjacent each other at about
`the same velocity, and in particular when a radar
`collision warning sensor is directed into low
`reflectivity regions of a target vehicle and/or receives
`minimally reflected signals from the target vehicle. The
`clear majority of vehicular targets in near field
`proximity reflect radar signals across their distributed
`surfaces which can exceed a system's detection
`thresholds. However, any vehicular target has a finite
`probability of producing return signals with low
`efficiency through characteristics of absorption or
`random scattering. Weak return signals could fall below
`system detection thresholds, resulting in perceivable
`dropouts as seen by the driver. Higher relative
`velocities generally contain enough Doppler signal to
`exceed system thresholds; therefore dropouts on "passing
`targets" can be more naturally minimized than during low
`speed or "stationary" passing events.
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`Still another annoyance is an alert signal
`flicker which occurs when a distributed target just
`enters or just clears a detection zone and both reflected
`field strength and relative velocity decay to near zero.
`5 Variations in reflected energy may cross and recross
`system threshold settings, causing the alert to oscillate
`in an annoying manner.
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`Summary of the Invention
`It is therefore an object of the invention to
`improve the zone of coverage response of side detection
`radar. A further object is to prevent or minimize
`dropouts due to small reflected signals during station
`keeping events. Another object is to minimize annoying
`alert activity when passing stationary or slow moving
`targets.
`
`The time of an alert signal activation is
`measured and compared to a threshold. The threshold can
`either be fixed or vary inversely with host vehicle
`speed. When the alert time is less than the threshold,
`the signal turn-off is delayed for a minimal hold time.
`The minimal hold time can be either a fixed value or
`varied intentionally with vehicle speed. The minimal
`hold time is generally only a fraction of a second, but
`in some applications it is desirable to elongate the
`minimal hold time as vehicle speed is increased to
`minimize flicker effects. When the alert time is equal
`to or greater than the threshold, a·longer sustain time
`is applied to hold the signal on, and is generally
`sufficient to bridge the dropout periods due to low
`reflectivity during station keeping. The sustain time
`varies according to the absolute value of the relative
`velocity between the target and host vehicles and ranges
`from a fraction of a second at high relative velocity up
`to a few seconds at low relative velocity .. This improves
`the zone of coverage as perceived by the vehicle driver,
`and can increase the perceived alert distance as well.
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`~-·
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`Brief Description of the Drawings
`The above and other advantages of the invention
`will become more apparent from the following description
`taken in conjunction with the accompanying drawings
`5 wherein like references refer to like parts and wherein:
`Figure 1 is a diagram of a vehicle equipped
`with side detection radar;
`Figure 2 is a schematic diagram of a side
`detection radar system for practicing the method of the
`invention;
`Figure 3a is a plan view of a target vehicle;
`Figures 3b, 3c and 3d are signal waveforms
`produced by the system of Figure 2 and representing the
`target vehicle, and implementing the method of the
`invention;
`Figure 4 is a diagram of a host vehicle and
`target vehicles illustrating actual zones and perceived
`extensions of radar coverage according to the invention;
`Figure 5 is a flow chart representing an
`algorithm for carrying out the invention;
`Figure 6 is a graph showing time thresholds and
`hold periods as a function of vehicle speed; and
`Figure 7 is a graph of variable sustain time as
`a function of relative vehicle speed.
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`Description of the Invention
`The ensuing description is directed to a
`vehicle radar side detection method and apparatus to
`cover a blind spot which is not visible to the driver in
`the side view mirrors. Such a system is useful for both
`trucks and automobiles.
`Referring to Figure 1, a motor vehicle 10
`(herein called a host vehicle) , in particular a large
`truck, has a side view mirror 12, and side detection
`radar antennae 14. The antennae are part of a side
`detection system 16. The side view mirror 12 provides a
`limited view of the lane adjoining the lane used by the
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`host vehicle, leaving the possibility that an object is
`present in a blind spot. The antennae are effective to
`view a region to the side of the vehicle to detect
`another vehicle or other object (herein called the target
`5 or target vehicle) in the blind spot. The side detection
`system 16 senses the presence of an object in the
`adjoining lane via radar signals transmitted and received
`at the side antennae 14. The system warns the operator
`of such objects by warning lamps or alert signals which
`10 may be on or within the mirror 12 and/or by an audible
`signal.
`
`15
`
`Figure 2 is a schematic diagram of the
`detection system 16. A signal processor 18 is coupled to
`a transceiver 20 so that the signal processor can control
`the transmission and can also receive data generated by
`the transceiver. The transceiver 20 includes a transmit
`unit 22 and a receive unit 24, each comprising a
`monolithic microwave integrated circuit. Transmit and
`receive antennae 14a and 14b are coupled to the transmit
`and receive units, respectively.
`The signal processor 18 includes a digital
`signal processor (DSP) 26 connected to a microprocessor
`28. A pulsed speed signal is an input to the
`microprocessor and other vehicle interfaces are coupled
`via buffers 30 to the microprocessor. An output port of
`the microprocessor carries an alert signal to the alert
`signal devices.
`The speed signal comprises pulses at a
`frequency proportional to vehicle speed and is available
`from either an onboard engine control module, anti-lock
`brake wheel speed sensors, a separate vehicle speed
`supply module, or via an integrated vehicle data bus.
`Preferably the speed signal supplies about 4000 pulses
`per mile over a serial or parallel data bus. The
`35 microprocessor counts vehicle speed pulses over time and
`translates this into host vehicle speed. Target
`discrimination algorithms use the speed information in
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`determining whether a detected object is a hazard. This
`is discussed in detail in U.S. Patent No.5,530,447
`entitled "Blind-Zone Target Discrimination Method and
`System for Road Vehicle Radar", assigned to the assignee
`5 of this invention and which is incorporated herein by
`reference. The DSP 26 does the radar calculations
`involving targets within the system zone of coverage.
`The DSP measures range rate of each target, estimates
`range in "X" and "Y" directions from the antennae, and
`supplies target track information. The relative speed of
`the host vehicle and the target is also calculated. This
`information is sent to the microprocessor 28 which,
`knowing vehicle speed, compares data within the structure
`of the target discrimination algorithms and makes a
`decision to report "valid" targets to the operator or to
`not report targets which are of little interest to the
`operator.
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`The waveform of Figure 3b shows a typical radar
`field strength return signal from a target vehicle 36 in
`Figure 3a. The wheel wells and the front and rear edges
`of the vehicle 36 profile afford weak return signals 38
`which often cross below the threshold while the remainder
`of the vehicle 36 return strong signals 40. The target
`discrimination algorithms process the signal to issue
`alert commands 42 shown in Figure 3c: gaps 44 between the
`alert commands are dropout events related to the weak
`field strength portions 38 of the signal. Without a
`sustaining action the visual or audio alert signal will
`It is preferred that there
`mimic the alert commands 42.
`be no dropout events in the alert signal corresponding to
`the target vehicle to achieve an uninterrupted or
`sustained alert signal 46 as shown in Figure 3d. This is
`accomplished in most cases by judiciously sustaining each
`individual alert signal 42 by the process described
`below. Generally most or all of the gaps 44 are removed
`and any remaining gaps 44 are minimized by this method
`which is especially successful at higher relative speeds
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`where the target discrimination algorithm is most
`effective. At the same time, because of the sustaining
`effect, the sustained alert signal 46 is longer by a
`period 48 than the alert command, thereby extending the
`zone of coverage as perceived by the driver.
`The improved coverage is illustrated in Figure
`4 wherein a host vehicle 50 having a speed of Vhost
`passes a target vehicle 52 having a speed of Vtarget less
`than Vhost. The radar covers a zone 54 to provide a raw
`10 alert signal when the vehicle 52 is still in that zone.
`Due to the period 48 of the sustained signal, a zone
`extension 56 is created to to effectively increase the
`zone of coverage. The amount of the extension is
`determined by the relative speeds of the vehicles and the
`time period 48. The same effect is produced when the
`host vehicle 50 is passed by a target vehicle 60 having a
`speed Vtarget greater than Vhost. Again the zone 62
`actually monitored by radar is supplemented by a zone
`extension 64 due to the sustain period 48.
`In each case,
`the driver of the host vehicle has greater assurance that
`the blind spot is free of an object.
`The algorithm for sustaining the alert signal
`is generally represented by the flow chart of Figure 5
`wherein the functional description of each block in the
`chart is accompanied by a number in angle brackets <nn>
`which corresponds to the reference number of the block.
`It will be understood that the algorithm is repetitively
`executed, say, one loop once each 20 msec. The radar
`transceiver outputs <66> and the host vehicle speed
`signal <68> are input to the signal processor where the
`radar operation algorithms <70> utilize a target
`discrimination program to determine whether to activate
`the alert and issue an alert command accordingly.
`If an
`alert command is present <72> the alert devices are
`turned on <74> and the program returns to the operating
`algorithm and activation is continued in each loop until
`the alert command ceases. Then, if the alert device is
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`still active <76> three variables are determined. A
`minimum alert time threshold "THRESHOLD'' is selected as a
`function of vehicle speed <78>, a minimum sustain time
`delay "HOLD" is selected as a function of speed <80>, and
`5 variable sustain time "SUSTIME" is selected as a function
`of relative vehicle speeds <82>.
`If the alerts were
`active for at least the THRESHOLD time <84>, the SUSTIME
`value is used to delay alert turn-off <86>, and when
`SUSTIME expires the alerts are turned off <88>. However
`if the alerts were active for less than the THRESHOLD
`time, the alert turn-off is delayed only for the HOLD
`time <90>.
`It will be understood that when a sustain
`time has been selected, it will be decremented in
`subsequent loops until it expires or until reset by a new
`alert command.
`The suggested values of THRESHOLD and HOLD
`times are shown in the graph of Figure 6. These are
`calibration values for one application and are useful to
`illustrate the principle of the alert sustain method.
`FOR example the THRESHOLD values decrease stepwise from
`about 300 msec at low speed (below 15 mph) to about 160
`msec at high speed (above 55 mph) . The THRESHOLD is high
`at low speeds because the target discrimination is less
`robust at low speeds and it is desired to not emphasize
`the shorter alerts since they may be false alarms; at
`higher speeds the discrimination is more robust and the
`alerts should be emphasized. Accordingly the HOLD values
`are only 20 msec from 0 to 45 mph and may optionally be 0
`msec; at 45 to 55 mph the HOLD value is 100 msec and at
`higher
`speeds it is
`200 msec. These values at higher
`. speeds
`help to mask
`flickers due to multiple reflections
`and/or
`signals
`from the front or rear of a target
`weak
`vehicle and
`thus to
`fill in gaps in the alert signal.
`The Figure 7 graph shows suggested values of
`SUSTIME versus absolute relative vehicle speed. These
`values vary stepwise from about 2.5 seconds at very low
`relative speed to about 0.6 seconds at relative speed
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`above 3 meters/sec. These are scaled to allow roughly a
`10 foot extension of the zone coverage in each speed
`range.
`It will be noted that these times are much larger
`than the HOLD times, so that the alert duration above the
`threshold will be greatly extended, thereby filling in
`gaps as well as increasing the perceived zone of
`coverage. Since dropouts are most common during station(cid:173)
`keeping events where the relative speed is small, the
`large SUSTIME values help to overcome the tendency to
`dropout. The lower SUSTIME values at higher relative
`velocities are appropriate since at such relative speeds
`there is usually enough Doppler information to exceed
`system thresholds.
`It will thus be seen that the method of
`sustaining alert signals beyond that commanded by the
`radar operating algorithms has the effect of filling in
`gaps in alert signals to produce, in most cases, a steady
`alert signal while a target is in view of the radar, and
`at the same time increases the perceived zone of coverage
`by extending the length of the alert signal. The alert
`sustaining method also prevents signal flicker which
`occurs when a distributed target clears a detection zone.
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`

`
`CLAIMS
`
`10
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`The embodiments of the invention in which an
`exclusive property or privilege is claimed are defined as
`follows:
`
`5
`
`In a radar system wherein a host vehicle
`1.
`uses radar to detect a target vehicle in a blind spot of
`the host vehicle driver, a method of improving the
`perceived zone of coverage response of automotive radar
`comprising the steps of:
`determining the relative speed of the host and
`target vehicles;
`selecting a variable sustain time as a function
`of relative vehicle speed;
`detecting target vehicle presence and producing
`an alert command;
`activating an alert signal in response to the
`alert command;
`at the end of the alert command, determining
`whether the alert signal was active for a threshold time;
`and
`
`if the alert signal was active for the
`threshold time, sustaining the alert signal for the
`variable sustain time, wherein the zone of coverage
`appears to increase according to the variable sustain
`time.
`
`2. The invention as defined in claim 1 wherein
`the variable sustain time is an inverse function of the
`relative vehicle speed.
`
`3. The invention as defined in claim 1
`including:
`varying the sustain time as an inverse function
`of the relative vehicle speed in the range of a fraction
`of a second to a plurality of seconds.
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`4. The invention as defined in claim 1
`including:
`varying the sustain time stepwise as an inverse
`function of the relative vehicle speed for a plurality of
`relative speed ranges.
`
`5. The invention as defined in claim 4
`including:
`varying the sustain time sufficiently to extend
`the perceived zone of coverage about the same amount in
`each range.
`
`6. The invention as defined in claim 1
`including:
`determining host vehicle speed; and
`selecting the threshold time as a function of
`the host vehicle speed.
`
`7. The invention as defined in claim 1 wherein
`if the alert signal was active for a period less than the
`threshold time, sustaining the alert signal for a
`minimized hold time to minimize driver perception of
`annoyance alarms.
`
`8. The invention as defined in claim 1 wherein
`if the alert signal was active for a period less than the
`threshold time, sustaining the alert signal for a hold
`time which is a function of host vehicle velocity.
`
`9. The invention as defined in claim 1
`including:
`determining host vehicle speed;
`sustaining the alert signal for a .hold time if
`the alert signal was active for a period less than the
`threshold time; and
`varying the hold time and the threshold time as
`a function of vehicie speed.
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`10. The invention as defined in claim 9
`wherein the hold time increases at high vehicle velocity.
`
`11. The invention as defined in claim 9
`5 wherein the hold time is at or near zero at low vehicle
`velocity and increases at high vehicle velocity.
`
`12. The invention as defined in claim 9
`wherein the hold time is shorter than the variable
`sustain time.
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`

`
`H-195076
`
`METHOD OF IMPROVING ZONE OF COVERAGE RESPONSE
`OF AUTOMOTIVE RADAR
`
`Abstract of the Disclosure
`Side detection radar utilized on a host vehicle
`for covering a blind spot in a vehicle mirror view
`produces alert commands resulting in signals which have
`gaps due to poor ·radar reflectivity of portions of a
`target. To fill these gaps to produce a steady alert
`signal when a target vehicle is in radar view and to
`extend the perceived zone of coverage, a variable sustain
`time is added to each alert signal which exceeds a
`threshold value. The sustain time varies as an inverse
`function of the relative vehicle speed and the threshold
`value varies as an inverse function of vehicle speed.
`If
`the alert signal is shorter than the threshold value,
`then a minimized hold time can be applied .
`
`•
`
`\
`
`17
`
`

`
`RS-1 REV. 4/13/93
`
`H-195076
`
`DECLARATION
`and
`DESIGNATION OF CORRESPONDENCE ADDRESS
`
`As an inventor named below, I hereby declare that:
`
`My residence; post office address and citizenship are stated below next to my
`name.
`
`I believe I am the original, first and sole inventor (if only one inventor is named
`below) or an original, first and joint inventor (if plural inventors are named below) of
`the subject matter which is claimed and for which a patent is sought in the
`specification H-195076 entitled
`
`METHOD OF IMPROVING ZONE OF COVERAGE '
`RESPONSE OF AUTOMOTIVE RADAR
`
`I have reviewed and understand the contents of the above identified specification
`including the claims, as amended by any amendment referred to in this
`Declaration.
`
`I acknowledge my duty to disclose to the Patent and Trademark Office all
`information known to me to be material to patentability as defined in title 37 Code of
`Federal Regulations section. 1.56. ·
`·
`
`I further declare that all statements made above of my own knowledge are true,
`that all statements made above on information and belief are believed to be true,
`and that these statements were made with the knowledge that willful false
`statements and the like are punishable by fine or imprisonment, or both, under title
`18 United States Code section 1001 and may jeopardize the validity of the
`application or any patent issuing thereon.
`
`Address all communications
`
`MARY S. MOORE
`Delco Electronics Corporation
`ERG Building- M.S. D-32
`P. 0. BOX 9005
`Kokomo, Indiana 46904·9005
`Telephone: 317/451-3867
`
`Inventor's signature -1-k'f~~'!l!..~~~~~~~~~·te 1 z,lz:/91.
`Citizenship: US
`Full name Mark Ford enderson
`Residence: Kokomo, IN
`Post office address: 1711 John D. Drive
`Kokomo, IN 46902
`
`18
`
`

`
`----------.. --·-----
`
`RS-1 REV. 4/13/93
`
`H-195076
`
`loveolo'' '''"''"ce fYH.i.,l.,t; ~
`
`Full name Michael John Shorke
`Residence: Noblesville, IN
`Post office address: 1512 Maple Avenue
`Noblesville, IN 46060
`
`loveolm'' •lgooloce ~ ~1cf~"" J
`
`Full name David James Lee
`Residence: Clover, SC
`Post office address: 480 Laked ale Drive
`Clover, SC 29710
`
`Date /!-;?- J'i.
`
`Citizenship: US
`
`loveolm'• '''"''"ffi Z2.,, ~ ~f}z, Date ,J,_/i~
`
`Thomas Hays Savchick
`Full name
`Residence: Noblesville, IN
`Post office address: 20137 Marie Court
`Noblesville, IN 46060
`
`Citizenship: US
`
`19
`
`

`
`I
`
`RS-7 REV. 4/13/93
`
`H-195076
`
`IN THE UNITED STATES PATENT AND TRADEMARK OFFICE
`
`H-195076
`
`Mark Ford Henderson
`Michael John Shorkey
`David James Lee
`Thomas Hays Savchick
`
`METHOD OF IMPROVING ZONE OF COVERAGE RESPONSE
`OF AUTOMOTIVE RADAR
`
`POWER OF ATIORNEY AND
`DESIGNATION OF CORRESPONDENCE ADDRESS
`
`As an agent of Delco Electronics Corporation, who is the assignee of this patent application, I
`hereby appoint the following attorney employed by Delco Electronics Corporation to prosecute
`this application and to transact all business in the Patent and Trademark Office connected
`therewith:
`
`Address all communications to
`
`MARYS. MOORE (Reg. No. 37,245)
`
`MARY S. MOORE
`Delco Electronics Corporation
`ERC BUILDING -M.S. D-32
`P. 0. BOX 9005
`Kokomo, IN 46904-9005
`Telephone: 317/451-3867
`
`I hereby declare and certify that I am an agent of Delco Electronics Corporation and Delco
`Electronics Overseas Corporation and am empowered to make the above appointment, that the
`assignee's ownership of this patent application is established by the attached assignment
`documentation, that the attached documentation is a true copy of the original documentation, that
`the original or a true copy of the attached documentation has been or is concurrently being
`submitted to the Patent and Trademark Office for recording, that the attached documentation has
`been reviewed, and that to the best of the assignee's knowledge and belief, title is in the assignee
`seeking to take the action. I further declare that the foregoing statements made of my own
`knowledge are true and made on information and belief are believed to be true and made with the
`understanding that willful false statements and the like are punishable by fine or imprisonment, or
`both, under title 18 United States Code section 1001 and may jeopardize the validity of this
`·
`application or any patent issuing thereon.
`
`Date._/...,L_~'-J_,;'/ 9't'---'6-
`
`By ~,;, j 3-.d<. /
`Jim L. Fu5ke - Agent
`
`20
`
`

`
`----------
`
`RS-2 REV. 4/13/93
`
`H-195076
`
`ASSIGNMENT
`
`Pursuant to an agreement relating to work I have performed for DELCO ELECTRONICS
`CORPORATION, I formally assign to DELCO ELECTRONICS CORPORATION, a
`corporation of DELAWARE, having a place of business at KOKOMO, INDIANA, the entire
`right, title and interest, in all countries, in the improvements set forth in the United States
`patent application H-195076 entitled
`
`METHOD OF IMPROVING ZONE OF COVERAGE
`RESPONSE OF AUTOMOTIVE RADAR
`
`for which I executed a declaration dated as indicated below. I further acknowledge that I was
`obligated to so assign such improvements at the time such improvements were made. If the
`patent application has been filed, I authorize attorney MARY S. MOORE to insert the
`application number and filing date of said application here in parentheses
`filed
`when known.
`(
`
`Full name:
`
`Residence: Kokomo, IN
`
`ate
`
`Jz/zltt..
`'
`
`I L/i!./f.t
`'
`
`lo.eotoC"Igoatme 1/Uw~..-h * ~•te 1/- ZS" -7b
`
`Full name: Michael John Shouy
`
`Residence: Noblesville, IN
`
`Declaration dated:
`11-Z-5"-£&
`
`Inventor's signature !.l/<-;..r,-/,:;-~u.; ,;C~
`J
`
`Full name: David James Lee
`
`Dale
`
`I I- I f - '7 (,
`
`Declaration dated:
`.
`;t-J'i-'i~
`
`Residence: Clover, SC
`
`~· i~
`If
`'
`/if
`'* f!.kp:·~
`Full name: Thomas Hays Savchick
`
`j
`
`Date
`
`i2 khre
`;_ _
`}
`Declaration dated:
`!2.t!;b6
`
`.
`
`.
`Inventor's signature
`
`Residence: Noblesville, IN
`
`21
`
`

`
`RS-2· REV. 4/13/93
`
`H-195076 Page 2
`
`On this ,gdcJay of ~/tf!i; , lfH, before me personally appeared
`Mark Ford Henderson known to me to be the person who executed the foregoing instrument,
`and acknowledged that he/she executed the same.
`
`(SEAL)
`
`, ;7'/C , before me personally appeared
`On this ~ S day of~
`Michael John Sherley nownto me to be the person who executed the foregoing instrument,
`and acknowledged that he/she executed the same.
`
`( ~ •
`;:
`
`OFFICIAL SEAL
`KAREN FLORER
`NOTARY PUBLIC - ARIZONA
`PIMA COUNTY
`•
`lly Comm . Ezpires Sept . 29 , 2000
`
`-
`
`•
`
`~~ otaryPUblic
`
`My commission expires: 1-~ '(-.2 """' 0
`County of Authorization: /~
`
`I g day of Noverobe<
`, 1q9t:, , before me personally appeared
`On this
`David James Lee known to me to be the person who executed the foregoing instrument, and
`acknowledged that he/she executed the same.
`
`(SEAL)
`
`22
`
`

`
`--·~·
`
`- - - ·····-··--·-- - - -
`
`RS-2 REV. 4/13/93
`
`H-195076 Page 3
`
`/"'ir"' r··
`r
`,,, . "' ,1·9 ,,_
`....
`v;.\
`! ,~
`u,
`'Y.
`.. ,
`.
`1"'-'
`On this c:<d day o~ /&e~fo-/d-U
`, tY.7h, before me personally1~P.~~~;j(-' ,;.;
`Thomas Hays Savch1ck known a me to be the person who executed the fo\e;1Joln~~
`.
`-J:~, '
`-~ /
`instrument, and acknowledged that he/she executed the same.
`"<"rn "' ".\ '/
`....... ,._,;_'.../
`
`(SEAL)
`
`No
`, /
`Public
`My commission expires: '7/.6#J.
`County of Authorization: kLd~·
`
`23
`
`

`
`PRINT OF DRAWINGS
`AS ORIG.INALLY FILED
`
`;..-
`
`H-195076
`Sheet 1 of 3
`
`08/i62090
`
`. ~,-
`
`I
`
`l r
`
`FIG -1
`
`12
`
`--
`148r;!, rt 22
`X§TM-
`
`--20
`
`'
`
`I
`I
`----------------~--
`' 14b
`
`\~~ 14
`
`10
`
`16
`
`26
`
`28
`
`TRANSCEIVER
`
`----------------- •
`24
`18- I
`FIG- 2
`
`BUFFERS ...__.,r-o INTERFACE
`OTHER
`,, SIGNAL PROCESSOR :
`,"" '------------------'
`------------------- -·
`
`<
`
`I '~
`I
`'
`. ·' ,. ~ I
`·- "'
`I
`----1
`.-- I ,.,
`'
`. . .
`I
`~.:...,-
`r - -l
`I
`'
`1
`~
`-~ I . •
`'
`_ , ' :-~
`. .:::-~
`·-
`~ !
`_:~
`... ~I
`·:
`.~
`
`.::
`
`;:_: I
`
`36
`
`_______ ,_r---~,-----·
`I
`I !WHEEL!
`'
`'
`'WELLS'
`~~~!
`-l f-
`-l f-
`I I
`I
`I
`--------------------.
`
`I
`
`I
`
`0
`
`I
`
`1
`
`I
`
`0
`
`0
`
`FIG- 3a
`
`FIG- 3b
`RETURN
`SIGNAL FIELD
`STRENGTH
`
`FIG .. 3c
`
`1-
`
`42
`
`RAW
`ALERT
`0
`
`
`- - -- - - - - - - - - TIME
`-1 I\_
`FIG - 3d SUf~:~~ED : -J
`I 48
`---=--------- TIME
`
`,.--46
`
`;
`
`24
`
`

`
`PRINT OF DRAWINGS
`AS ORIGINALLY FD..ED
`
`H-195076
`Sheet 2 of 3
`