Back in 2002 Sony seemed to be in the forefront of robotic technologies. With Aibo already in the market for 3 years (1999) and having a cult following of owners it seemed right to continue creating domestic robots. So in that same year Sony officially announced the development of the "SDR-4X" which later became known as QRIO (Quest for cuRIOsity). Advanced for it's time this small entertainment robot had the following:
- Adaption motion control
- Real-time Gait Pattern Generation Control
- Real-world Space Perception Technology (visual/sound)
- Individual person detection
- Continuous speech recognition
- Unknown vocabulary acquisition
- Conversation, performance control technology based on its short-term and long-term memorySpeech synthesis and singing voice production
- Safe design for interaction with people
- Improved expression by adding more degrees of freedom
- Improved performance of small actuators















