InkJoy Partner Platform

Consumer-proven ePaper tech, licensed for partners.

Device RTOS, cloud, ISFR, and Merchant API — modular layers already shipping in InkJoy Frame.

From product to platform

Validated in InkJoy Frame before it reaches partners.

Every licensed module ships first on our own consumer product — so partners inherit a stack proven for long standby, natural photo rendering, and end-to-end delivery from device to app.

The stack

Four layers you can license independently.

Select a layer for scope — from low-power firmware to cloud image intelligence.

Low-power embedded runtime

FreeRTOS scheduling, layered state machines, health guardians, and fast OTA — tuned for months of standby, dual-band Wi-Fi, and always-reachable push.

  • HTTPS + MQTTS secure channels
  • ECIES auth & AES-GCM content protection
  • Instant refresh & scheduled playlists

Modular licensing

License the depth that fits your product.

Most partners start at Level 1: full stack from InkJoy, branded app from the partner. Narrower builds can take fewer layers.

Partner / Customize Service
InkJoy Merchant API

Cloud Platform

ISFR rendering engine

IoT Communication Protocol

Low Power Device RTOS
Spectra 6 Display
Partner integration path through Merchant API into cloud, device, and display.

Recommended: InkJoy provides hardware, RTOS, cloud, and ISFR; the partner builds the branded app on Merchant API.

Module Provided by

ISFR

Natural color on Spectra 6 ePaper.

Spectra 6 has a limited, discrete gamut. Simple dithering crushes shadows or flattens skin tones. ISFR analyzes the scene first, then applies enhancement, color management, and dither together.

Side-by-side comparison: industry standard is too dark, InkJoy ISFR looks natural and vivid, open-source method looks overexposed and flat.
Industry standard · InkJoy ISFR · Open-source — same source, different pipelines.

Cloud-evolving models

Deploy new models without device upgrades; fleets stay consistent as quality improves.

Partner-tuned scenes

Optimize for small formats, ink-wash art, gift still-life, or other brand-critical looks.

System, not a filter

Vision, deep learning, and Spectra-aware dithering as one coordinated pipeline.

Two small round color ePaper modules showing the same portrait with and without improved InkJoy rendering.
Small-format ePaper: finer dither and more natural skin tone with ISFR (right).

Partner cases

How partners use the stack.

Selected deployments. Client names omitted under NDA.

  1. 01

    Level 1 · Full Platform

    Vertical AIGC frame for a faith / religious niche

    The partner connected an existing AIGC pipeline through Merchant API and our SDK, and shipped a vertical ePaper frame without rebuilding app, cloud, or device stacks. Go-to-market began in about two weeks, avoiding an estimated multi-million cost in app–cloud–device development.

  2. 02

    Level 4 · ISFR Service

    More than 200K devices running ISFR

    ISFR is deployed on more than 200K devices worldwide. The largest rollout is with a professional imaging company (under NDA): after months of in-house tuning that still missed their quality bar, they adopted ISFR for production.

Merchant API

Domains partners integrate against.

Illustrative requests for merchantapi.inkjoyframe.com. Consumer apps use Open API separately.

POST https://merchantapi.inkjoyframe.com/v1/devices/{id}/push
Authorization: Bearer ···
{ "albumId": "spring-lookbook", "render": "isfr" }

→ 202 Accepted · queued for frame · ETA 4s

InkJoy Partner Platform

Discuss licensing for your product.

Share form factor, target market, and the levels you need — we will map an integration path.