Prosecution Insights
Last updated: October 02, 2026
Application No. 18/734,535

REAL-TIME SYNCHRONIZATION TECHNIQUE FOR RECTIFICATION OF RESOLVER FEEDBACKS

Final Rejection §102
Filed
Jun 05, 2024
Examiner
HARRISON, MICHAEL A
Art Unit
2852
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
STMicroelectronics N.V.
OA Round
2 (Final)
89%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
92%
With Interview

Examiner Intelligence

Grants 89% — above average
89%
Career Allowance Rate
521 granted / 586 resolved
+20.9% vs TC avg
Minimal +3% lift
Without
With
+2.7%
Interview Lift
resolved cases with interview
Fast prosecutor
1y 9m
Avg Prosecution
19 currently pending
Career history
605
Total Applications
across all art units

Statute-Specific Performance

§101
2.4%
-37.6% vs TC avg
§103
42.6%
+2.6% vs TC avg
§102
36.6%
-3.4% vs TC avg
§112
11.6%
-28.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 586 resolved cases

Office Action

§102
DETAILED ACTION Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Response to Amendment Claim Rejections - 35 USC § 102 The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claim(s) 1-20 is/are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Oustry et al. WO 2023/027790. Regarding Claim 1, Oustry teaches a motor configured to have one or more positions (see figures 3-5 and 24 and [0043] discussing a motor); a micro controller unit (MCU) configured to generate a rectification signal (528 generates rectification signal 308; see figure 24 step 2402-2404 in which the motor controller, an MCU, generates cos and sin rectification signals; see figure 24, 2410, which gives a final rectified signal in the form of rotational speed from the cos and sin signals); a resolver configured to generate at least one sine signal and at least one cosine signal based on the rectification signal generated by the MCU and based on an initial position of the one or more positions of the motor (resolver 200 generates sin and cos signals 316 and 318, respectively; see figure 24, 2402-2404 in which the motor controller, an MCU, generates cos and sin rectification signals); and a signal rectifier in the MCU, wherein the signal rectifier is configured to reconstruct a sign signal based on a position sensing variable (see figure 24, steps 2406-2408, in which the cos and sin rectified signals are signed using information regarding direction of rotation), wherein the position sensing variable is based on an absolute value of at least one sine sample signal exceeding a threshold or an absolute value of at least one cosine sample signal exceeding the threshold (see [0112]-[0115] and figure 24, steps 2410-2414, which teach position detection based on the sin and cos signals surpassing a threshold). Regarding Claim 2, Oustry teaches the system of claim 1, wherein the MCU is further configured to provide, via a signal generator, the rectification signal to the resolver (figure 5, signal generator 506 and [0060]). Regarding Claim 3, Oustry teaches the system of claim 1, wherein the MCU comprises a resolver interface circuitry, the resolver interface circuitry further comprising an excitation generator circuitry configured to generate an excitation signal and a demodulation circuitry configured to perform rectification sign signal reconstruction (see figure 5, elements 526, 506, 510 as well as [0060]-[0061] discussing said interface). Regarding Claim 4, Oustry teaches the system of claim 3, wherein the resolver interface circuitry is configured to generate the rectification signal, wherein the rectification signal is a rectification sign signal synchronized with one or more modulated feedbacks of the resolver (see [0052]-[0053]). Regarding Claim 5, Oustry teaches the system of claim 3, wherein the resolver interface circuitry is configured to set a sign of the reconstructed sign signal based on a sign sample of the position sensing variable (see figure 24 and [0065]-[0068], [0128]-[0129] details the signal sampling and sign reconstruction). Regarding Claim 6, Oustry teaches the system of claim 1, wherein the threshold is associated with noise in the system (see [0100] discussing an association). Regarding Claim 7, Oustry teaches the system of claim 1, wherein the position sensing variable is based on the initial position of the one or more positions of the motor (see figures 5 and 24; also note that, broadly, position sensing is always based to some extent on the initial motor position). Regarding Claim 8, Oustry teaches an apparatus comprising: a micro controller unit (MCU) configured to generate a rectification signal (528 generates rectification signal 308; see figure 24 step 2402-2404 in which the motor controller, an MCU, generates cos and sin rectification signals; see figure 24, 2410, which gives a final rectified signal in the form of rotational speed from the cos and sin signals); a resolver configured to receive one or more positions of a motor and configured to generate at least one sine signal and at least one cosine signal based on the rectification signal generated by the MCU and based on an initial position of the one or more positions of a motor (resolver 200 generates sin and cos signals 316 and 318, respectively; see figure 24, 2402-2404 in which the motor controller, an MCU, generates cos and sin rectification signals); and a signal rectifier in the MCU, wherein the signal rectifier is configured to reconstruct a sign signal based on a position sensing variable (resolver 200 generates sin and cos signals 316 and 318, respectively; see figure 24, 2402-2404 in which the motor controller, an MCU, generates cos and sin rectification signals), wherein the position sensing variable is based on an absolute value of at least one sine sample signal exceeding a threshold or an absolute value of at least one cosine sample signal exceeding the threshold (see [0112]-[0115] and figure 24, steps 2410-2414, which teach position detection based on the sin and cos signals surpassing a threshold; see figure 24 and [0065]-[0068], [0128]-[0129] details the signal sampling and sign reconstruction). Regarding Claim 15, the device as recited in claim 8 is specific to this method and thus it must perform the method. The method is intrinsic to the apparatus because the recited method steps will be performed during normal operation of the apparatus. Therefore, Claim 15 is also rejected. Regarding Claim 9, Oustry teaches the apparatus of claim 8, wherein the MCU is further configured to provide, via a signal generator, the rectification signal to the resolver (figure 5, signal generator 506 and [0060]). Regarding Claim 10, Oustry teaches the apparatus of claim 8, wherein the MCU comprises a resolver interface circuitry, the resolver interface circuitry further comprising an excitation generator circuitry configured to generate an excitation signal and a demodulation circuitry configured to perform rectification sign signal reconstruction (see figure 5, elements 526, 506, 510 as well as [0060]-[0061] discussing said interface; also see [0050]-[0054]). Regarding Claim 11, Oustry teaches the apparatus of claim 10, wherein the resolver interface circuitry is configured to generate the rectification signal, wherein the rectification signal is a rectification sign signal synchronized with one or more modulated feedbacks of the resolver (see [0052]-[0053]). Regarding Claim 12, Oustry teaches the apparatus of claim 10, wherein the resolver interface circuitry is configured to set a sign of the reconstructed sign signal based on a sign of the position sensing variable (see figure 24 and [0065]-[0068], [0128]-[0129] details the signal sampling and sign reconstruction). Regarding Claim 13, Oustry teaches the apparatus of claim 8, wherein the threshold is associated with noise in the apparatus (see [0100]). Regarding Claim 14, Oustry teaches the apparatus of claim 8, wherein the position sensing variable is based on the initial position of the one or more positions of the motor (see figures 5 and 24; also note that, broadly, position sensing is always based to some extent on the initial motor position). Regarding Claim 16, Oustry teaches the method of claim 15, wherein the MCU comprises a resolver interface circuitry, the resolver interface circuitry further comprising an excitation generator circuitry configured to generate an excitation signal and a demodulation circuitry configured to perform rectification sign signal reconstruction (see figure 5, elements 526, 506, 510 as well as [0060]-[0061] discussing said interface). Regarding Claim 17, Oustry teaches the method of claim 16, further comprising: generating, by the resolver interface circuitry, the rectification signal, wherein the rectification signal is a rectification sign signal synchronized with one or more modulated feedbacks of the resolver (see [0052]-[0053]). Regarding Claim 18, Oustry teaches the method of claim 16, further comprising: setting, by the resolver interface circuitry, a sign of the reconstructed sign signal based on a sign of the position sensing variable (see figure 24 and [0065]-[0068], [0128]-[0129] details the signal sampling and sign reconstruction). Regarding Claim 19, Oustry teaches the method of claim 15, wherein the threshold is associated with noise impacting the at least one sine sample signal or the at least one cosine sample signal (see [0100]). Regarding Claim 20, Oustry teaches the method of claim 15, wherein the position sensing variable is based on the initial position of the one or more positions of the motor (see figures 5 and 24; also note that, broadly, position sensing is always based to some extent on the initial motor position). Response to Arguments Applicant's arguments filed 06/17/2026 have been fully considered but they are not persuasive. Regarding Applicants’ first argument concerning the rejection Claim 1 under 35 USC § 102 (see Remarks p.7), Applicant states: “In Oustry, reference numeral 528 refers to a "sensor signal processing module" (e.g., Oustry at [0073]) and reference numeral 308 refers to an "excitation signal" (e.g., Oustry at [0052]). As may be easiest to see in FIG. 5 of Oustry, the rectification signal 308 is generated by a Resolver-to-Digital Converter 502 that is not part of the motor controller 504. See also, e.g., Oustry at [0050]. As to FIG. 24, in paragraph [0160] Oustry describes step 2402 and discloses "receiving a sine feedback signal and a cosine feedback signal from a resolver wherein the sine feedback signal and the cosine feedback signal modulate an excitation (e.g., the excitation signal 308) signal provided to the resolver." In paragraph [0161], Oustry describes step 2404 and discloses "generating a rectified sine signal and a rectified cosine signal by way of sampling the sine feedback signal and the cosine feedback signal at a frequency less than a respective frequency of the excitation signal." It is respectfully submitted that Oustry's steps 2402 - 2404 fail to teach the claimed limitations. As Oustry makes clear at FIG. 5 and at steps 2402 - 2404 of FIG. 24, Oustry does not disclose an MCU generating the excitation signal 308, which is alleged by the Office Action to be the recited rectification signal. Steps 2402 - 2404 also do not disclose a resolver generating a sine signal and a cosine signal "based on the rectification signal generated by the MCU and based on an initial position of the one or more positions of the motor."” Contrary to Applicant’s arguments, Claim 1 does not claim an excitation signal, and therefore Oustry is not required to teach said signal. Respectfully, Applicant’s remarks interpret the claim language to be narrower than the broadest reasonable interpretation. Regarding Applicants’ second argument concerning the rejection Claim 1 under 35 USC § 102 (see Remarks p.8), Applicant states: “The Office Action asserts that Oustry discloses, at steps 2406 - 2408 of Figure 24, "the cos and sin rectified signals are signed using information regarding direction of rotation." However, in paragraph [0164], Oustry describes step 2406 and discloses "determining a direction of rotation of the output shaft using the sine feedback signal, the cosine feedback signal, the rectified sine signal, and the rectified cosine signal." In paragraph [0165], Oustry further describes step 2408 and discloses "converting the rectified sine signal and the rectified cosine signal into a signed sine signal and a signed cosine signal respectively, using information associated with determining the direction of rotation." Oustry's conversion of rectified signals into signed signals relies on information about determining the direction of rotation and not on position. Steps 2406 - 2408 fail to teach "a signal rectifier in the MCU, wherein the signal rectifier is configured to reconstruct a sign signal based on a position sensing variable."” Contrary to Applicant’s arguments, the claim language is broader than Applicant’s interpretation of the claim language as discussed in the arguments. Respectfully, claim 1 recites a “position sensing variable”, not necessarily position itself, which is broad enough to encompass direction. For this reason the claims stand rejected. Conclusion THIS ACTION IS MADE FINAL. Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any nonprovisional extension fee (37 CFR 1.17(a)) pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the mailing date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL A HARRISON whose telephone number is (571)272-3573. The examiner can normally be reached Monday-Friday 9:00 AM - 5:00 PM. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, STEPHANIE BLOSS can be reached at (571) 272-3555. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /MICHAEL A HARRISON/Examiner, Art Unit 2852 /STEPHANIE E BLOSS/Supervisory Primary Examiner, Art Unit 2852
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Prosecution Timeline

Jun 05, 2024
Application Filed
Mar 18, 2026
Non-Final Rejection mailed — §102
Jun 17, 2026
Response Filed
Sep 01, 2026
Final Rejection mailed — §102 (current)

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Prosecution Projections

3-4
Expected OA Rounds
89%
Grant Probability
92%
With Interview (+2.7%)
1y 9m (~0m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 586 resolved cases by this examiner. Grant probability derived from career allowance rate.

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