It would appear to be a document issued by the Court, not a police record. A similar procedure applies in England & Wales and an extra copy of this document is sent to the Police

See (both languages):

Avis de condamnation

36 Dans les meilleurs délais suivant la déclaration de culpabilité rendue en l’absence du contrevenant, le greffier lui fait parvenir par courrier ordinaire, à son adresse inscrite au procès-verbal, à l’attestation de signification ou à tout autre document au dossier, l’avis de déclaration de culpabilité, les montants de l’amende et des frais et le délai accordé pour leur paiement.

1992, ch. 47, art. 36 1996, ch. 7, art. 22(A)
Notice of conviction

36 As soon as practicable after an offender, whose address appears on the ticket, the certificate of service or other document in the court file, is convicted in the absence of the offender, the clerk of the court shall cause a notice of the conviction, the amounts of any fine and fees and any time allowed for their payment to be sent to the offender by ordinary mail.

1992, c. 47, s. 36 1996, c. 7, s. 22(E)

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Note added at 7 hrs (2021-03-22 03:13:39 GMT)
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https://laws-lois.justice.gc.ca/fra/lois/c-38.7/page-4.html

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Note added at 7 hrs (2021-03-22 03:17:15 GMT)
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However, maybe from France:

LIVRE VI: CODE DE LA PROCEDURE PENALE
lexalgeria.free.fr › propvi
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644– le ministre de la justice transmet au greffe de la cour du lieu de naissance ou du casier central les avis de condamnation provenant des autorités étrangères.

http://lexalgeria.free.fr/propvi.htm

The "Bulletin n° 3" is the most often requested extract of a "casier judiciaire". The latter is the "criminal record". Here's a source for info on who, what, where and when for n°s 1 and 2: https://www.service-public.fr/particuliers/vosdroits/F14710
The nature of the content varies from one bulletin to the other. It is important not to confuse the terms "casier judiciaire" and "bulletin...", the latter being an extract.

These are not to be confused with the "Avis de condamnation". This is not to be confused with "Signification de jugement" either.

As for the term "avis de condamnation", they can be issued by the "Procureur de la République". An example of one can be found here: http://www.textes.justice.gouv.fr/art_pix/JUSD1622465C.pdf Perhaps also by others, but I'd need to carry out further searches. I don't know how up to date this is, but cross-checking with sources on Legifrance would probably be useful if needed. Bear in mind, also, that a "judgment" may not actually involve a sentence and so when you consider that the case in point is notifying the fact that someone has been found guilty and sentenced, then "judgment" strikes me as a mistranslation here.

Different terms, different meanings, produced from different sources and at different times and in different circumstances.