Reexamination Control No. 90/005,742
Patent 5,253,341
1 Bridges teach away from using his DFF compression technique to send video (claim 94) or an
2 animation sequence (claim 97) over a telephone line. Instead, the cited passages simply
3 recognize that the low bandwidth of telephones lines restricts the quality of the transmitted
4 information. Finally, Dr. Koopman's assertion that Bridges's videophone-quality compression is
5 unsatisfactory for AV data used for marketing purposes is irrelevant, because such AV data is
6 not recited in claim 94 or claim 97.
7 The § 112 rejection of claims 94 and 97 is therefore reversed.
8 Q. The rejections based on Walter
9
10 (1) Claims 93, 95, 96, and 98-101 – anticipated by Walter?
11
12 Walter discloses a programming-on-demand cable system 10 having a central station 12
13 and a data receiving station 14 and employing optical fibers as the transmission media for the
14 selected programs. Each of the memory modules 24, 26, 28, 30, 32, and 34 at the central station
15 stores a video program. Walter, col. 4, ll. 7-11. The program is stored in these modules in
16 compressed form for subsequent transmission to the data receiving station in compressed form.
17 Id. at col. 7, ll. 17-19. At the data receiving station, the user uses the keyboard 18, control
18 computer 112, and automatic modem 134 to send an "address" identifying the desired video
19 program over telephone lines 138 and 142 to the modem 143 and host computer 20 in the central
20 station. Id. at col. 7, ll. 48-57. The host computer acknowledges the request by sending a
21 "receipt" signal over the telephone lines to the data receiving station, which displays that
22 acknowledgment to the user on television 146. Id. at col. 7, ll. 57-63. The requested program is
23 then sent over the fiber optic lines to the data receiving station, where it is converted to electrical
- 59 -
Page: Previous 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 Next
Last modified: November 3, 2007