INB

Status

Field	Value
Extension(s)	.inb
Common ecosystem	Inbro-related lead
Format family	Machine-specific lead
Satin Studio status	Researching
Open / import	No
Export	No
Confidence	Low-medium.

What it is

INB is reported for Inbro-related embroidery workflows in converter ecosystems.

Satin Studio direction

Research lead only.

Versions and variants

Tracked as a format lead until files confirm machine family, header layout, and command mapping.

File identification notes

Reported structure includes a large 8192-byte header followed by unsigned x, y, control-style records.

Observed structure notes

• Observed INB readers skip an 8192-byte (0x2000) header before the stitch stream.
• Observed records are three bytes: X, Y, control. Control bit 0x40 negates X and bit 0x20 negates Y after Y inversion.
• Observed low-nibble controls include 0x0 stitch, 0x1 color change with movement, 0x2 jump, and full control 0x04 end.

Structure sketch

Observed INB files use a large header and three-byte records:

struct InbCandidate<'a> {
    header: [u8; 0x2000],
    records: &'a [InbRecord],
}

struct InbRecord {
    x: u8,
    y: u8,
    control: u8,                       // 0x40 negates x; 0x20 negates y
}

enum InbCommand {
    Stitch,                            // control & 0x0F == 0x00
    ColorChange,                       // control & 0x0F == 0x01
    Jump,                              // control & 0x0F == 0x02
    End,                               // control == 0x04
}

What we still need

Known-source files, header samples, command mapping, and reader validation.