Sony PlayTV is a USB 2.0 device containing dual DVB-T tuners. It is sold without a remote, as an accessory for the PS3.
It is supported under Linux.
This device has a Dibcom STK7070PD frontend and DIB7070p tuner and reports the vendor id 0x1415, product id 0x0003.
See Wikipedia  for more info on the device itself.
Support is available via a patch for the 22.214.171.124 kernel or from the v4l-dvb tree since changeset 10824
Support in Windows is available by patching the .inf file of either the 32-bit or 64-bit Pinnacle_PCTV_Dual_DVB-T_Diversity_Stick_(2001e) drivers, to add the additional 0x1415/0x0003 ids.
DiBcom STK7070PD reference design
See the talk page