HiPac

{{Infobox storage medium

| name =

| logo =

| image =

| caption =

| type = Magnetic tape cartridge endless loop

| encoding = Stereo analog signal

| capacity = 2 × 30 min @ {{frac|1|7|8}} IPS

| read = stereo tape head

| write = prerecorded only

| standard =

| owner = Pioneer, HIPAC Council

| use = portable and mobile audio playback devices

| dimensions = 70 × 85 × 12 mm

| weight = ~ 50 g

| extended from = PlayTape

| extended to =

| released = {{Start date and age|1971|08}}

| discontinued = Mid-1970s

}}

HiPac (stylized as HIPAC) (pronounced as high-pack), is an audio tape cartridge format, introduced in August 1971 on the Japanese consumer market by Pioneer{{Cite magazine|date=July 24, 1971|title=Ten Japanese Firms Back New Mini Stereo System|url=https://books.google.com/books?id=uwgEAAAAMBAJ&pg=PA19|magazine=Billboard|pages=19, 21|via=Google Books}} and discontinued in 1973 due to lack of demand. In 1972 it only achieved a market share of 3% in equipping new cars.{{Cite magazine|last=Eguchi|first=Hideo|date=October 6, 1973|title=Locally Manufactured and Imported Blanks Produce Millions in Business in Japan|url=https://books.google.com/books?id=AgkEAAAAMBAJ&pg=PA66|magazine=Billboard|pages=66, 68|via=Google Books}} In the mid 1970s, the format was repurposed as a children's educational toy called {{nihongo|ポンキー|Ponkey}} and was used in the analog tape delay "Melos Echo Chamber".

Cartridge

HiPac is a successor of the PlayTape cartridge, which had been licensed by Tokyo Shibaura Electric around 1970, and had similar dimensions of {{Convert|70 × 85 × 12|mm||lk=in|abbr=on}}, which is closer to Compact Cassette than other cartridges containing an endless loop tape. Depending on tape length, the weight of each cartridge is about {{Convert|50|g||abbr=on}} and used the wider four-track magnetic tape of the compact cassette with {{Convert|3.81|mm||abbr=on}} The four audio tracks are separated into two stereo programs. The second program is recorded in the same direction as the first, unlike the Compact Cassette.Major Specifications of the "HIPAC" Cartridge, Billboard

There are two specified tape speeds: 60 minutes at {{frac|1|7|8}} ips or ~4.8 cm/s, and 30 minutes at {{frac|3|3|4}} ips or ~9.5 cm/s. The tape speed is detected automatically by a notch in the cartridge's case. The slower of these tape speeds is identical to the Compact Cassette.{{Cite magazine|date=February 17, 1973|title=Stereo Cartridges: Outlook Bullish|url=https://books.google.com/books?id=QEUEAAAAMBAJ&pg=PT28|magazine=Billboard|pages=J-10|via=Google Books}}

HiPac Council

In addition to Pioneer, the following companies participated.

Apollon Music Industry (Apron Ongaku Kōgyō, from 2010 Bandai Music Entertainment)
Clarion
Kodansha
Sharp Corporation
Tokyo Shibaura Electric (Toshiba)
Toshiba Music Industry (EMI Music Japan)
Nippon Columbia
Hitachi, Ltd.
Mitsui Bussan Home Appliance Sales