Several improved versions of VHS exist, most notably S-VHS, an improved analog standard, and D-VHS, which records digital video onto a VHS form factor tape.
VHS-C tapes (C for compact) are used in some camcorders, and can be played back in standard VHS players with an adapter. Its development hampered the sales of the Betamax system somewhat, because the Betamax cassette geometry prevented a similar development.
Although VHS officially stands for Video Home System, it initially stood for Vertical Helical Scan, after the relative head/tape scan technique. Some early reports claimed that the initials originally stood for Victor (Company) Helical Scan system.
VCR's were taken to court and found legal in the case of Sony vs. Universal Studios however under a proposed law "Induce" the VHS system would become illegal.